UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 14A

           PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES
                      EXCHANGE ACT OF 1934 (AMENDMENT NO. )

Filed by the Registrant   [ X ]
Filed by a Party other than the Registrant   [   ]

Check the appropriate box:

[   ]   Preliminary Proxy Statement
[   ]   Confidential, for Use of the Commission Only (as permitted by Rule
        14a-6(e)(2))
[ X ]   Definitive Proxy Statement
[   ]   Definitive Additional Materials
[   ]   Soliciting Material Pursuant to ss. 240.14a-12

                        Pioneer Natural Resources Company
                        ---------------------------------
                (Name of Registrant as Specified in Its Charter)

    ------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[ X ]   No fee required.
[   ]   Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

     (1) Title of each class of securities to which transaction applies:
         --------------------------------------------------------------

     (2) Aggregate number of securities to which transaction applies:
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     (3) Per  unit  price or  other  underlying  value of  transaction  computed
         pursuant to  Exchange Act Rule  0-11 (set forth the amount on which the
         filing fee is calculated and state how it was determined):
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     (5) Total fee paid:
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[   ]   Fee paid previously with preliminary materials.
[   ]   Check box if any  part of the fee is offset as  provided by Exchange Act
        Rule 0-11(a)(2) and identify the filing for which the offsetting fee was
        paid previously. Identify the previous  filing by registration statement
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                        PIONEER NATURAL RESOURCES COMPANY
                          5205 North O'Connor Boulevard
                                    Suite 200
                               Irving, Texas 75039


                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

To the Stockholders of Pioneer Natural Resources Company:

     Notice is hereby given that the Annual Meeting of  Stockholders  of Pioneer
Natural Resources Company (the "Company") will be held in the Hudson Room at the
Dallas Marriott Las Colinas Hotel, 223 West Las Colinas Boulevard, Irving, Texas
75039,  on  Wednesday,  May 16,  2007,  at 9:00 a.m.  Central  Time (the "Annual
Meeting"). The Annual Meeting is being held for the following purposes:

       1.   To elect four Class I directors, each for a term of three years.

       2.   To ratify the selection of Ernst & Young LLP as  the auditors of the
            the Company for the current year.

       3.   To  consider  and  vote  upon a  proposal to  approve the  Company's
            Amended and Restated Employee Stock Purchase Plan, which will extend
            the termination date of  the plan from December 31, 2007 to December
            31, 2017.

       4.   To transact  such other  business  as may  properly come  before the
            Annual Meeting.

     These proposals are described in the accompanying proxy materials. You will
be able to vote at the Annual  Meeting only if you were a stockholder  of record
at the close of business on March 22, 2007.

                             YOUR VOTE IS IMPORTANT

     Please  date,  sign and return the  enclosed  Proxy  promptly  so that your
shares may be voted in  accordance  with your wishes and so we may have a quorum
at the Annual  Meeting.  Instead of returning  the paper proxy,  you may vote by
internet or phone by following the instructions on your Proxy.


                                           By Order of the Board of Directors,


                                             /s/ Mark H. Kleinman
                                           ------------------------------------
                                           Mark H. Kleinman
                                           Secretary

Irving, Texas
April 4, 2007





                        PIONEER NATURAL RESOURCES COMPANY
                          5205 North O'Connor Boulevard
                                    Suite 200
                               Irving, Texas 75039


                                 PROXY STATEMENT

                       2007 ANNUAL MEETING OF STOCKHOLDERS

     The Board of  Directors of the Company  requests  your Proxy for the Annual
Meeting of Stockholders that will be held Wednesday,  May 16, 2007, at 9:00 a.m.
Central Time, in the Hudson Room at the Dallas  Marriott Las Colinas Hotel,  223
West Las Colinas  Boulevard,  Irving,  Texas 75039.  By granting the Proxy,  you
authorize  the persons  named on the Proxy to represent you and vote your shares
at the Annual Meeting. Those persons will also be authorized to vote your shares
to adjourn the Annual  Meeting  from time to time and to vote your shares at any
adjournments or postponements of the Annual Meeting.

     If you attend the Annual  Meeting,  you may vote in person.  If you are not
present at the Annual Meeting, your shares may be voted only by a person to whom
you have given a proper Proxy,  such as the  accompanying  Proxy or the Internet
Proxy. You may revoke the Proxy in writing at any time before it is exercised at
the Annual  Meeting by  delivering  to the  Secretary  of the  Company a written
notice of the  revocation,  by signing and  delivering  to the  Secretary of the
Company a Proxy with a later date,  or by  submitting  your vote  electronically
through the internet or by phone after the grant of the Proxy.  Your  attendance
at the Annual  Meeting will not revoke the Proxy unless you give written  notice
of revocation  to the Secretary of the Company  before the Proxy is exercised or
unless you vote your shares in person at the Annual Meeting.

                           DELIVERY OF PROXY MATERIALS

Mailing Date

     The approximate date on which this Proxy Statement and accompanying  Notice
of Annual  Meeting of  Stockholders  and Proxy are first  being sent or given to
stockholders is April 4, 2007.

Stockholders Sharing an Address

     Registered  Stockholders.  Registered  stockholders  (the  stockholder owns
shares in his, her or its own name on the books of the Company's transfer agent)
who share the same address will be delivered  one Proxy  Statement  and one 2006
Annual Report.

     Street name  Stockholders.  Most banks and brokers are delivering  only one
copy of the Proxy Statement and the 2006 Annual Report to consenting street name
stockholders (the stockholder owns shares in the name of a bank, broker or other
holder of record on the books of the  Company's  transfer  agent)  who share the
same address.  This procedure  reduces the Company's  printing and  distribution
costs.  Those who wish to receive  separate copies may do so by contacting their
bank or broker.  Similarly,  most street  name  stockholders  who are  receiving
multiple  copies  of the  Proxy  Statement  and 2006  Annual  Report at a single
address may request  that only a single set of  materials be sent to them in the
future by contacting their bank or broker. In the alternative,  most street name
stockholders  may give  instructions  to receive  separate copies or discontinue
multiple  mailings of materials by contacting  the third party that mails annual
meeting  materials  for most  banks  and  brokers  by  writing  to  Householding
Department, ADP, 51 Mercedes Way, Edgewood, New York 11717, or telephoning (800)
542-1061. The instructions must include the name of the stockholder's  brokerage
firm and account number.







Electronic Delivery Option

     Instead  of  receiving  future  copies  of the  proxy  materials  by  mail,
registered stockholders may elect to view future proxy materials on the internet
by following the instructions  provided when voting by internet or phone. Street
name  stockholders  may also have the  opportunity  to view  copies of the proxy
materials  electronically.  Those  who opt to do so may  contact  their  bank or
broker  regarding  the  availability  of this  service.  Opting  to  view  proxy
materials  online  will  save the  Company  the cost of  producing  and  mailing
documents to stockholders and provides immediate access to the information.  The
Notice of Annual  Meeting  of  Stockholders,  Proxy  Statement  and other  proxy
materials are also available on the Company's  website at  www.pxd.com.  Neither
the Company  website nor any other website  included in this Proxy  Statement is
intended to function  as a  hyperlink,  and the  information  contained  on such
websites is not a part of this Proxy Statement.

                                QUORUM AND VOTING

     Voting Stock.  The Company's common stock, par value $.01 per share, is the
only class of securities that entitles  holders to vote generally at meetings of
the Company's stockholders. Each share of common stock outstanding on the record
date is entitled to one vote.

     Record Date. The record date for stockholders  entitled to notice of and to
vote at the Annual  Meeting was the close of business on March 22,  2007.  As of
the  record  date,  123,386,066  shares of common  stock  were  outstanding  and
entitled to be voted at the Annual Meeting.

     Quorum  and  Adjournments.  The  presence,  in person  or by Proxy,  of the
holders of a majority of the votes  eligible to be cast at the Annual Meeting is
necessary to constitute a quorum at the Annual Meeting.

     If a quorum  is not  present,  the  stockholders  entitled  to vote who are
present  in person or by Proxy at the Annual  Meeting  have the power to adjourn
the Annual Meeting from time to time,  without notice other than an announcement
at the  Annual  Meeting,  until a quorum is  present.  At any  adjourned  Annual
Meeting at which a quorum is present,  any business may be transacted that might
have been transacted at the Annual Meeting as originally notified.

     Vote  Required.  Directors  will be  elected  by a  plurality  of the votes
present and  entitled  to be voted at the Annual  Meeting.  Ratification  of the
selection of the  Company's  auditors will require the  affirmative  vote of the
holders of a majority  of the shares  present  and  entitled  to be voted at the
Annual Meeting.  Approval of the Company's  Amended and Restated  Employee Stock
Purchase Plan will require the affirmative  vote of the holders of a majority of
the shares present and entitled to be voted at the Annual Meeting.  An automated
system that the Company's  transfer agent  administers  will tabulate the votes.
Brokers who hold shares in street name for customers are required to vote shares
in accordance with instructions received from the beneficial owners. Brokers are
permitted to vote on discretionary items if they have not received  instructions
from  the  beneficial  owners,  but they are not  permitted  to vote (a  "broker
non-vote") on  non-discretionary  items absent  instructions from the beneficial
owner.  Abstentions  and broker  non-votes will count in  determining  whether a
quorum is present at the Annual Meeting.  Both  abstentions and broker non-votes
will not have any effect on the  outcome of voting on  director  elections.  For
purposes of voting on the ratification of the selection of auditors and approval
of the Company's Amended and Restated Employee Stock Purchase Plan,  abstentions
will be  included  in the number of shares  voting and will have the effect of a
vote against the  proposals,  and broker  non-votes  will not be included in the
number of shares voting and therefore  will have no effect on the outcome of the
voting.

                                       2






     Default  Voting.  A Proxy that is properly  completed  and returned will be
voted at the Annual Meeting in accordance with the instructions on the Proxy. If
you  properly  complete  and return a Proxy,  but do not  indicate  any contrary
voting instructions, your shares will be voted as follows:

     o   FOR the  election of the  four persons named in this Proxy Statement as
         the Board of Directors' nominees for election as Class I directors.

     o   FOR the  ratification  of the  selection  of  Ernst & Young  LLP as the
         Company's auditors for 2007.

     o   FOR the  approval of the  Company's Amended and Restated Employee Stock
         Purchase Plan.

If any other business  properly comes before the  stockholders for a vote at the
meeting,  your shares will be voted in  accordance  with the  discretion  of the
holders of the Proxy.  The Board of  Directors  knows of no matters,  other than
those  previously  stated,  to be  presented  for  consideration  at the  Annual
Meeting.

PARTICIPANTS IN THE PIONEER NATURAL RESOURCES USA, INC. 401(k) AND MATCHING PLAN

     Participants in the Pioneer Natural Resources USA, Inc. 401(k) and Matching
Plan (the "401(k)  Plan") who have shares of common stock credited to their plan
account  as of the record  date will have the right to direct  the  401(k)  Plan
trustee regarding how to vote those shares.  The trustee will vote the shares in
a  participant's  401(k)  Plan  account  in  accordance  with the  participant's
instructions  or, if no  instructions  are received  prior to May 11, 2007,  the
shares  credited to that  participant's  account will be voted by the trustee in
the  same  proportion  as it  votes  shares  for  which  it did  receive  timely
instructions.  Information as to how  participants  voted the shares credited to
their 401(k) Plan account will not be disclosed to the Company.

If a participant  holds common stock outside of the 401(k) Plan, the participant
will  also  receive  a Proxy  relating  to  those  shares,  which  must be voted
separately.

                                    ITEM ONE

                              ELECTION OF DIRECTORS

     The Board of Directors has nominated the following individuals for election
as Class I  Directors  of the  Company  with their  terms to expire in 2010 when
their successors are elected and qualified:

                               R. Hartwell Gardner
                                 Linda K. Lawson
                                 Frank A. Risch
                                 Mark S. Sexton

     Messrs.  Gardner, Risch and Sexton and Mrs. Lawson are currently serving as
Directors of the Company.  Their  biographical  information  is contained in the
"Directors and Executive Officers" section below.

     The Board of  Directors  has no reason to believe  that any of its nominees
will be unable or unwilling to serve if elected.  If a nominee becomes unable or
unwilling to accept  nomination or election,  either the number of the Company's
directors  will be reduced or the persons  acting  under the Proxy will vote for
the election of a substitute nominee that the Board of Directors recommends.

     The Board of Directors  unanimously  recommends that  stockholders vote FOR
the election of each of the nominees.

                                       3






                        DIRECTORS AND EXECUTIVE OFFICERS

     The  executive  officers of the Company are, and after the Annual  Meeting,
assuming  the  stockholders  elect the nominees of the Board of Directors as set
forth in "Item One - Election of Directors" above, the Board of Directors of the
Company will be:

Name                         Age                   Position
----                         ---                   --------
Scott D. Sheffield.......    54    Chairman of the Board of Directors and Chief
                                   Executive Officer
Timothy L. Dove..........    50    President and Chief Operating Officer
A. R. Alameddine.........    59    Executive Vice President, Worldwide
                                   Negotiations
Mark S. Berg   ..........    48    Executive Vice President, General Counsel
                                   and Assistant Secretary
Chris J. Cheatwood.......    46    Executive Vice President, Worldwide
                                   Exploration
Richard P. Dealy.........    41    Executive Vice President and Chief Financial
                                   Officer
William F. Hannes........    47    Executive Vice President, Worldwide Business
                                   Development
Danny L. Kellum..........    52    Executive Vice President, Domestic Operations
Darin G. Holderness......    43    Vice President, Chief Accounting Officer and
                                   Assistant Secretary
James R. Baroffio........    75    Director
Edison C. Buchanan.......    52    Director
R. Hartwell Gardner......    72    Director
Linda K. Lawson..........    61    Director
Andrew D. Lundquist......    46    Director
Charles E. Ramsey, Jr....    70    Director
Frank A. Risch ..........    64    Director
Mark S. Sexton ..........    51    Director
Robert A. Solberg........    61    Director
Jim A. Watson  ..........    68    Director

     The Company  has  classified  its Board of  Directors  into three  classes.
Directors  in each  class are  elected to serve for  three-year  terms and until
either they are reelected or their  successors are elected and  qualified.  Each
year,  the directors of one class stand for  reelection as their terms of office
expire.  Messrs.  Gardner,  Risch and Sexton and Mrs.  Lawson are  designated as
Class I  Directors  and their  terms of office  expire  at the  Annual  Meeting.
Messrs.  Baroffio,  Buchanan,  Sheffield  and Watson are  designated as Class II
Directors and their terms of office expire in 2008.  Messrs.  Lundquist,  Ramsey
and  Solberg are  designated  as Class III  Directors  and their terms of office
expire in 2009.

     Executive officers serve at the discretion of the Board of Directors.

     Set forth below is  biographical  information  about each of the  Company's
executive officers and directors named above.

     Scott  D.  Sheffield.  Mr.  Sheffield,  a  distinguished  graduate  of  The
University of Texas with a Bachelor of Science degree in Petroleum  Engineering,
has held the position of Chief  Executive  Officer  since  August  1997.  He was
President  of the Company  from August  1997 to November  2004,  and assumed the
position  of  Chairman  of the Board of  Directors  in August  1999.  He was the
Chairman  of the Board of  Directors  and Chief  Executive  Officer  of Parker &
Parsley  Petroleum  Company  ("Parker & Parsley")  from  October  1990 until the
Company  was  formed in  August  1997.  Mr.  Sheffield  joined  Parker & Parsley
Development Company ("PPDC"),  a predecessor of Parker & Parsley, as a petroleum
engineer in 1979. Mr.  Sheffield  served as Vice President - Engineering of PPDC
from  September  1981 until April  1985,  when he was  elected  President  and a
Director.  In March 1989,  Mr.  Sheffield  was elected  Chairman of the Board of
Directors  and  Chief  Executive  Officer  of PPDC.  Before  joining  PPDC,  Mr.
Sheffield  was  employed  as a  production  and  reservoir  engineer  for  Amoco
Production Company.

                                       4





     Timothy L. Dove. Mr. Dove was elected President and Chief Operating Officer
in November  2004.  Prior to that, Mr. Dove held the positions of Executive Vice
President  and Chief  Financial  Officer from February 2000 to November 2004 and
Executive  Vice  President  - Business  Development  from August 1997 to January
2000.  Mr.  Dove  joined  Parker  &  Parsley  in May  1994 as Vice  President  -
International  and was promoted to Senior Vice President - Business  Development
in October 1996, in which  position he served until August 1997.  Before joining
Parker & Parsley,  Mr. Dove was employed with Diamond  Shamrock  Corp.,  and its
successor,   Maxus  Energy  Corp.,  in  various   capacities  in   international
exploration and production,  marketing,  refining, and planning and development.
Mr. Dove  earned a Bachelor of Science  degree in  Mechanical  Engineering  from
Massachusetts  Institute  of  Technology  in 1979 and  received  his  Master  of
Business Administration in 1981 from the University of Chicago.

     A. R.  Alameddine.  Mr.  Alameddine was elected  Executive Vice President -
Worldwide  Negotiations in November 2005. Mr. Alameddine joined Parker & Parsley
(a  predecessor  of the  Company)  in July 1997 as Vice  President  of  Domestic
Business Development,  and continued to serve the Company in this capacity after
the Company's  formation in August 1997 until he was promoted to Executive  Vice
President - Worldwide  Business  Development in November 2003.  Prior to joining
Parker & Parsley,  Mr.  Alameddine  spent 26 years with  Mobil  Exploration  and
Production  Company  ("Mobil").  At the time of his  departure  from Mobil,  Mr.
Alameddine was the Acquisition,  Trade and Sales Manager, a position he had held
since 1990. Prior to 1990, Mr. Alameddine held several  managerial  positions in
the  acquisition  and  sales  group  as  well  as in the  reservoir  engineering
department.  A native of Lebanon,  Mr.  Alameddine joined Mobil as an Operations
Engineer following his graduation from Louisiana State University in 1971 with a
Bachelor of Science degree in Petroleum Engineering.

     Mark S. Berg.  Mr. Berg was elected  Executive  Vice  President and General
Counsel  in April  2005.  Prior to that,  Mr.  Berg  served  as  Executive  Vice
President,  General  Counsel and Secretary of American  General  Corporation,  a
Fortune 200  diversified  financial  services  company,  from 1997 through 2002.
Subsequent  to the sale of  American  General to American  International  Group,
Inc.,  Mr.  Berg joined  Hanover  Compressor  Company as Senior Vice  President,
General  Counsel  and  Secretary.  He served in that  capacity  from May of 2002
through April of 2004. Mr. Berg began his career in 1983 with the  Houston-based
law firm of  Vinson & Elkins  L.L.P.  He was a  partner  with the firm from 1990
through  1997.  Mr.  Berg  graduated  Magna Cum Laude and Phi Beta  Kappa with a
Bachelor  of Arts degree from  Tulane  University  in 1980.  He earned his Juris
Doctorate with honors from the University of Texas Law School in 1983.

     Chris J. Cheatwood.  Mr.  Cheatwood was elected  Executive Vice President -
Worldwide  Exploration  in January  2002.  Mr.  Cheatwood  joined the Company in
August 1997 and was promoted to Vice  President - Domestic  Exploration  in July
1998 and Senior Vice President - Exploration  in December  2000.  Before joining
the Company,  Mr.  Cheatwood  spent ten years with Exxon  Corporation  where his
focus included  exploration in the Deepwater Gulf of Mexico.  Mr. Cheatwood is a
graduate  of the  University  of Oklahoma  with a Bachelor of Science  degree in
Geology and earned his Master of Science  degree in Geology from the  University
of Tulsa.

     Richard P. Dealy. Mr. Dealy was elected  Executive Vice President and Chief
Financial Officer in November 2004. Prior to that time, Mr. Dealy held positions
of Vice  President  and Chief  Accounting  Officer from  February  1998 and Vice
President  and  Controller  from August 1997 to January  1998.  Mr. Dealy joined
Parker & Parsley in July 1992 and was promoted to Vice  President and Controller
in 1995, in which position he served until August 1997. He is a Certified Public
Accountant,  and prior to joining Parker & Parsley, he was employed by KPMG LLP.
Mr.  Dealy  graduated  with honors from  Eastern  New Mexico  University  with a
Bachelor of Business Administration degree in Accounting and Finance.

     William F.  Hannes.  Mr.  Hannes was  elected  Executive  Vice  President -
Worldwide  Business  Development  in November  2005.  Mr. Hannes joined Parker &
Parsley (a  predecessor  of the  Company)  in July 1997 as  Director of Business
Development,  and  continued  to serve the  Company in this  capacity  after the
Company's  formation  in August 1997 until he was  promoted to Vice  President -
Engineering and Development in June 2001. Prior to joining Parker & Parsley, Mr.

                                       5





Hannes held engineering positions with Mobil and Superior Oil. He graduated from
Texas A&M  University  in 1981 with a Bachelor  of Science  degree in  Petroleum
Engineering.

     Danny L. Kellum.  Mr. Kellum,  who received a Bachelor of Science degree in
Petroleum  Engineering from Texas Tech University in 1979, was elected Executive
Vice  President - Domestic  Operations in May 2000.  From January 2000 until May
2000,  Mr. Kellum  served as Vice  President - Domestic  Operations.  Mr. Kellum
served as Vice  President - Permian  Division  from  August 1997 until  December
1999. From 1989 until 1994 he served as Spraberry  District  Manager and as Vice
President  of the  Spraberry  and Permian  Division  for Parker & Parsley  until
August 1997.  Mr. Kellum  joined  Parker & Parsley as an operations  engineer in
1981 after a brief career with Mobil Oil Corporation.

     Darin G. Holderness.  Mr. Holderness  graduated with a Bachelor of Business
Administration  in Accounting  from Boise State  University in 1986. In December
2004, he was elected Vice President and Chief Accounting Officer of the Company.
He previously  served as Chief Financial  Officer and various other positions of
Basic Energy  Services from March 2004 to November 2004.  Earlier in his career,
he served as Vice President - Controller  and various other  positions with Pure
Resources,  Inc. and  predecessor  entities from January 1998 to February  2004.
From January 1996 to December 1997, he served as Manager of Financial  Reporting
for Aquila Gas  Pipeline  Corporation.  From June 1986 to  December  1995 he was
employed by KPMG LLP as a Senior Manager and various other positions.

     James R.  Baroffio.  Dr.  Baroffio  received a Bachelor  of Arts  degree in
Geology at the College of Wooster,  Ohio, a Master of Science in Geology at Ohio
State University, and a Ph.D. in Geology and Civil Engineering at the University
of Illinois.  Before  becoming a Director of the Company in December  1997,  Dr.
Baroffio  enjoyed a long career with Chevron Oil Corporation  where he served as
President,  Chevron  Research  and  Technology  Center  and  Vice  President  of
Exploration and eventually  retired as President of Chevron Canada  Resources in
1994.  Dr.  Baroffio  was Chairman of the U.S.  National  Committee of the World
Petroleum  Congress  and is a  Trustee  Associate  of the AAPG  Foundation.  His
community  leadership  positions  included  Chairman of the Pacific  Symphony of
California  and a Director  of the  Nature  Conservancy  of  Canada,  as well as
serving as President of the Alberta Nature Conservancy.

     Edison C. Buchanan.  Mr. Buchanan  received a Bachelor of Science degree in
Civil  Engineering  from  Tulane  University  in 1977 and a Master  of  Business
Administration  in Finance and International  Business from Columbia  University
Graduate  School of  Business in 1981.  From 1981 to 1997,  Mr.  Buchanan  was a
Managing  Director of various groups in the Investment  Banking Division of Dean
Witter  Reynolds in their New York and Dallas  offices.  In 1997,  Mr.  Buchanan
joined  Morgan  Stanley  Dean  Witter as a Managing  Director in the Real Estate
Investment  Banking group. In 2000, Mr.  Buchanan  became Managing  Director and
head of the domestic Real Estate Investment Banking Group of Credit Suisse First
Boston.  In 2001,  Mr.  Buchanan  began working for The Trust for Public Land, a
land conservation  organization,  in Santa Fe, New Mexico. Mr. Buchanan became a
Director of the Company in 2002. Since 2004, Mr. Buchanan has also served on the
Board of Directors of MFA Mortgage Investments, Inc.

     R. Hartwell Gardner. Mr. Gardner became a Director of the Company in August
1997.  He served as a  Director  of Parker & Parsley  from  November  1995 until
August 1997. Mr. Gardner  graduated from Colgate  University  with a Bachelor of
Arts degree in  Economics  and then  earned a Master of Business  Administration
from Harvard University. Until October 1, 1995, Mr. Gardner was the Treasurer of
Mobil Oil Corporation and Mobil  Corporation  from 1974 and 1976,  respectively.
Mr. Gardner is a member of Financial Executives International where he served as
Chairman  in 1986  and1987  and is a Director  and  Chairman  of the  Investment
Committee  of Oil  Investment  Corporation  Ltd.  and  Oil  Casualty  Investment
Corporation Ltd. in Hamilton, Bermuda.

     Linda K.  Lawson.  Mrs.  Lawson  holds a  Bachelor  of  Science  degree  in
Accounting  from the University of Denver.  Mrs. Lawson was employed by business
units of The Williams Companies, as well as the parent organization from 1980 to
her retirement in 2001.  During her tenure she served in a variety of capacities
including  accounting and finance  positions of the parent,  and Controller of a

                                       6





Federal Energy  Regulatory  Commission  regulated  energy  business  unit,  Vice
President of Investor Relations, Vice President of Human Resources, and as Chief
Operating Officer of several  telecommunication  start-up  businesses.  She is a
Certified Public  Accountant.  She serves on the Strategic  Planning and Funding
Committee for the School of Accountancy  at the University of Denver,  where she
is also an adjunct  instructor,  and she serves on several outdoor  recreational
non-profit  Denver  organizations  and  is a  board  member  of the  Center  for
Corporate  Excellence,  a  non-profit  organization  engaged in the  pursuit and
improvement of corporate ethics and governance. Mrs. Lawson became a Director of
the Company in 2002.

     Andrew D. Lundquist.  Mr.  Lundquist  received a Bachelor of Science degree
from the  University of Alaska and a Juris  Doctorate  from Catholic  University
Columbus  School of Law. He joined the Company's Board of Directors in September
2004,  in  accordance  with the terms of the  Company's  merger  with  Evergreen
Resources,  Inc. after having served as an independent  director on the Board of
Directors of Evergreen  Resources,  Inc. since  November 2002.  During 2001, Mr.
Lundquist  served as the  Director of The White  House  National  Energy  Policy
Development  Group,  which directed the cabinet-level  task force created by the
President  and  headed  by the Vice  President  that  produced  the  President's
National  Energy Policy.  At that same time, he also served as Senior Advisor to
the  President  and Vice  President  on energy  issues.  Mr.  Lundquist  was the
Majority  Staff  Director  of the  U.S.  Senate  Energy  and  Natural  Resources
Committee from 1998 to 2001.  Since March 2002, Mr.  Lundquist has served as the
Managing  Partner  of  Lundquist,   Nethercutt  &  Griles,  LLC,  a  Washington,
D.C.-based consulting firm that provides analytic and strategic advice to senior
executives  of  corporations.  Mr.  Lundquist  also  serves as Director of Coeur
d'Alene  Mines  Corporation,  a company  engaged  in the  operation,  ownership,
development and exploration of silver and gold mining property.

     Charles E. Ramsey,  Jr. Mr. Ramsey is a graduate of the Colorado  School of
Mines with a Petroleum  Engineering degree and a graduate of the Smaller Company
Management  program at the Harvard  Graduate School of Business  Administration.
Mr. Ramsey has served as a Director of the Company since August 1997. Mr. Ramsey
served as a Director of Parker & Parsley  from  October  1991 until August 1997.
Since  October  1991, he has operated an  independent  management  and financial
consulting  firm.  From June 1958 until  June  1986,  Mr.  Ramsey  held  various
engineering  and  management  positions in the oil and gas industry and, for six
years before October 1991, was a Senior Vice President in the Corporate  Finance
Department  of Dean  Witter  Reynolds  Inc.  in its Dallas,  Texas  office.  His
industry experience  includes 12 years of senior management  experience with May
Petroleum  Inc. in the  positions  of  President,  Chief  Executive  Officer and
Executive Vice President.  Mr. Ramsey is also a former director of MBank Dallas,
the Dallas Petroleum Club and Lear Petroleum Corporation.

     Frank A. Risch.  Mr. Risch earned a Bachelor of Science  degree in business
administration  in 1964  from  Pennsylvania  State  University  and a Master  of
Science  degree  in  industrial  administration  in 1966  from  Carnegie  Mellon
University.  After joining Exxon Corporation in 1966 as a financial analyst,  he
held various  positions in finance,  planning and  marketing  with Exxon and its
operating  affiliates  in the U.S.  and abroad for  nearly 38 years.  Mr.  Risch
retired as Vice President and Treasurer of Exxon Mobil  Corporation in June 2004
and was appointed to the Company's  Board of Directors in August 2005. He serves
on the Business  Board of Advisors of the Tepper  School of Business at Carnegie
Mellon University. He is active in civic and community organizations, serving as
Chairman of the Finance Committee and Treasurer of the Dallas Theater Center and
as a member of the Board of  Directors of Dallas CASA (Court  Appointed  Special
Advocates).  Mr. Risch is also a member of the Financial  Executives  Institute,
the World Affairs Council of Greater Dallas and the Dallas  Committee on Foreign
Relations.

     Mark S. Sexton.  Mr. Sexton is the Chairman and Chief Executive  Officer of
Evergreen  Energy Inc.  (formerly  known as KFx,  Inc.),  which offers  combined
energy,  environmental  and economic  solutions to coal-fired  power  generating
facilities and industrial  coal users in the United States and  internationally.
Mr. Sexton graduated from Stanford University in 1978 with a Bachelor of Science
degree in mechanical engineering and is registered as a professional engineer in
Colorado.  He joined the  Company's  Board of Directors in  September  2004,  in
accordance with the terms of the Company's merger with Evergreen Resources, Inc.
(which is not affiliated with Mr. Sexton's present  employer,  Evergreen Energy,

                                       7





Inc.).  Mr. Sexton was employed in various  technical,  financial and management
positions  with Amoco  Production  Company,  Norwest  Bank and energy  companies
specifically  targeting coal bed methane  development  until he joined Evergreen
Resources,  Inc.  in  1989  where  he  initially  managed  its  daily  operating
activities.  Before  Evergreen  Resources,  Inc.  merged  with  the  Company  in
September  2004,  Mr. Sexton served as a director from March 1995, its President
and its Chief  Executive  Officer  from June 1995 and  Chairman  of the Board of
Directors  from 1999.  Mr. Sexton is a past  president of the Colorado Oil & Gas
Association, a board member of the Independent Petroleum Association of America,
an  executive  committee  member of the  Independent  Petroleum  Association  of
Mountain States and a member of the Society of Petroleum Engineers.

     Robert A.  Solberg.  Mr.  Solberg  earned a  Bachelor  of  Science in Civil
Engineering  from the  University  of North  Dakota in 1969,  and is a  licensed
Petroleum Engineer. Mr. Solberg spent over three decades working for Texaco Inc.
throughout the world. He served his last ten years as a Corporate Vice President
with several management roles including  President of International  Exploration
and Production and President of Upstream Commercial  Development.  He elected to
retire in 2002 and joined the Company's Board of Directors in 2002. He continues
to live in Houston,  Texas with a focus on  investment  management  and business
consultation.  Mr.  Solberg  serves as an  outside  Director  and  non-executive
Chairman of JDR Cable Systems,  Ltd., a privately owned British  company.  Since
December of 2005,  Mr.  Solberg has served as Chairman of the Board of Directors
for Scorpion  Offshore Ltd, a Bermuda based  corporation  that owns and operates
offshore  drilling rigs. He also enjoys a history of civic leadership and serves
on the University of North Dakota Alumni  Association Board with a director role
on their investment committee.

     Jim A.  Watson.  Mr.  Watson  became a Director of the Company in September
2004.  He earned a Bachelor of Arts degree from the  University of Texas in 1962
and graduated,  with honors, from The University of Texas School of Law in 1964.
Mr. Watson has served as Senior Counsel for the law firm of Carrington, Coleman,
Sloman, & Blumenthal,  L.L.P. in Dallas,  Texas since June 2003. Before then, he
was a partner at the law firm of Vinson & Elkins L.L.P. in Dallas,  Texas.  From
1987 to 1995,  he held the position of Adjunct  Professor at The  University  of
Texas  School of Law and from  2000 to 2004,  Mr.  Watson  was  Chairman  of the
Advisory  Board of the  Clement  Center for  Southwestern  Studies  at  Southern
Methodist  University.  Since  1989,  Mr.  Watson has been  included in The Best
Lawyers in America.

                      MEETINGS AND COMMITTEES OF DIRECTORS

     The Board of Directors of the Company  held sixteen  meetings  during 2006,
and its independent  directors met in executive  session four times during 2006.
No director  attended fewer than 75 percent of the aggregate of the total number
of meetings of the Board of  Directors  and the total  number of meetings of all
committees of the Board of Directors on which that director served.

     The Board of Directors has three standing committees:  the Audit Committee,
the  Compensation  and Management  Development  Committee and the Nominating and
Corporate Governance Committee.

     Audit Committee. Information regarding the functions performed by the Audit
Committee  and its  membership  is set forth in the  "Audit  Committee  Report",
included  herein,  and the  "Audit  Committee  Charter"  that is  posted  on the
Company's website at www.pxd.com. The members of the Audit Committee are Messrs.
Gardner  (Chairman),  Risch,  Solberg  and  Watson  and Mrs.  Lawson.  The Audit
Committee held seven meetings during 2006.

     Compensation and Management Development Committee.  Responsibilities of the
Compensation   and   Management   Development   Committee   (the   "Compensation
Committee"),  which are discussed in detail in its charter that is posted on the
Company's website at www.pxd.com, include among other duties, the responsibility
to:

    o  periodically  review the compensation,  employee benefit plans and fringe
       benefits paid to, or provided for, executive officers of the Company,

                                       8





    o  approve the annual salaries,  bonuses and share-based  awards paid to the
       Company's executive officers,
    o  periodically  review and recommend  to the full  Board of Directors total
       compensation for each  non-employee director for services  as a member of
       the Board of Directors and its committees,
    o  administer the Company's equity plans, and
    o  oversee the Company's succession planning.

     The  Compensation  Committee  is  delegated  all  authority of the Board of
Directors  as may be  required  or  advisable  to fulfill  the  purposes  of the
Compensation Committee. The Compensation Committee may form and delegate some or
all of its authority to subcommittees when it deems  appropriate.  Meetings may,
at  the  discretion  of  the  Compensation  Committee,  include  members  of the
Company's  management,  independent  consultants  or  advisors,  and such  other
persons as the Compensation Committee or its chairperson may determine.

     The Vice President,  Administration and Risk Management of the Company,  or
such other officer as may from time to time be  designated  by the  Compensation
Committee,  acts as management  liaison to the Compensation  Committee and works
with the Compensation  Committee  chairperson to prepare an agenda for regularly
scheduled  meetings.  The  Compensation  Committee  chairperson  makes the final
decision regarding the agenda for regularly  scheduled meetings and develops the
agenda for special  meetings  based on the  information  supplied by the persons
requesting  the special  meeting.  The Company's  Chief  Executive  Officer (the
"CEO")  makes  recommendations  to  the  Compensation  Committee  regarding  the
compensation  of  other  executive  officers  and  provides  information  to the
Compensation Committee regarding the executive officers'  performance;  however,
the  Compensation  Committee makes all final  decisions  regarding the executive
officers' compensation.

     The  Compensation  Committee  has the sole  authority to retain,  amend the
engagement with, and terminate any compensation  consultant to be used to assist
in the evaluation of director,  CEO or officer  compensation.  The  Compensation
Committee  has sole  authority  to  approve  the  consultant's  fees  and  other
retention  terms  and has  authority  to cause the  Company  to pay the fees and
expenses of such  consultants.  During 2006, the Compensation  Committee engaged
the services of Mercer Human Resource Consulting ("Mercer").  Among the services
Mercer  was asked to  perform  were  apprising  the  Compensation  Committee  of
compensation-related  trends,  developments in the marketplace and industry best
practices;   informing  the  Compensation   Committee  of   compensation-related
regulatory   developments;   providing  peer  group  survey  data  to  establish
compensation  ranges for the various  elements  of  compensation;  providing  an
evaluation of the  competitiveness of the Company's  executive  compensation and
benefits  programs;   assessing  the  relationship  between  executive  pay  and
performance;  and advising on the design of the Company's incentive compensation
programs,  including  metric  selection and target setting and the design of the
Company's performance unit award program.

     The members of the Compensation Committee are Messrs.  Buchanan (Chairman),
Baroffio,  Lundquist and Ramsey.  The  Compensation  Committee held ten meetings
during 2006.

     Nominating and Corporate Governance Committee. The Nominating and Corporate
Governance  Committee assists the Board of Directors in evaluating potential new
members of the Board of Directors, recommending committee members and structure,
and  advising  the Board of  Directors  about  corporate  governance  practices.
Additional  information  regarding the functions performed by the Nominating and
Corporate Governance  Committee is set forth in "Corporate  Governance" included
herein, and the "Nominating and Corporate  Governance Committee Charter" that is
posted on the Company's  website at  www.pxd.com.  The members of the Nominating
and Corporate  Governance  Committee  include all  non-employee  directors.  The
Nominating and Corporate Governance Committee held four meetings during 2006.

                                       9






                                    ITEM TWO

                RATIFICATION OF SELECTION OF INDEPENDENT AUDITORS

     The Audit  Committee of the Board of Directors  has selected  Ernst & Young
LLP as the independent  auditors of the Company for 2007. Ernst & Young LLP have
audited the Company's  consolidated  financial  statements  since 1998. The 2006
audit  of  the  Company's   annual   consolidated   financial   statements   and
effectiveness  of internal  control over  financial  reporting  was completed on
February 19, 2007.

     The Board of Directors is submitting the selection of Ernst & Young LLP for
ratification at the Annual  Meeting.  The submission of this matter for approval
by  stockholders  is not legally  required,  but the Board of Directors  and the
Audit Committee believe the submission  provides an opportunity for stockholders
through  their vote to  communicate  with the Board of  Directors  and the Audit
Committee about an important aspect of corporate governance. If the stockholders
do not  ratify the  selection  of Ernst & Young LLP,  the Audit  Committee  will
reconsider the selection of that firm as the Company's auditors.

     The Audit  Committee has the sole authority and  responsibility  to retain,
evaluate and replace the Company's auditors.  The stockholders'  ratification of
the  appointment  of Ernst & Young LLP does not limit the authority of the Audit
Committee to change auditors at any time.

     Audit  Fees.  The  aggregate  fees of  Ernst & Young  LLP for  professional
services rendered for the audits of the Company's annual consolidated  financial
statements  included in its Annual  Report on Form 10-K,  audit of the Company's
internal control over financial  reporting,  reviews of the Company's  quarterly
financial  statements included in its Quarterly Reports on Form 10-Q and reviews
of the Company's other filings with the Securities and Exchange  Commission (the
"SEC"), including comfort letters, consents and other research work necessary to
comply with generally  accepted auditing  standards for the years ended December
31, 2006 and 2005 were $1,876,000 and $1,371,000, respectively.

     Audit-Related   Fees.   The  aggregate  fees  of  Ernst  &  Young  LLP  for
audit-related  services  provided to the Company  totaled  $113,000  and $46,000
during  each of the  years  ended  December  31,  2006 and  2005,  respectively.
Audit-related services were comprised of audits of the Company's 401(k) Plan and
certain  affiliated  partnerships and  subsidiaries,  and related  out-of-pocket
expenses.

     Tax Services Fees. The aggregate fees of Ernst & Young LLP for tax services
provided  to the Company  totaled  $101,000  and $49,000  during the years ended
December 31, 2006 and 2005, respectively.  Tax services were primarily comprised
of tax return  preparation and review services for expatriates and the Company's
international subsidiaries and consultation on various tax issues.

     Other  Fees.  The  aggregate  fees of Ernst & Young LLP for other  services
provided  to the  Company  during the years  ended  December  31,  2006 and 2005
totaled  $6,000 and $6,500,  respectively.  The other services were comprised of
access to Ernst & Young LLP's on-line research services.

     The  Charter  of the  Company's  Audit  Committee  requires  that the Audit
Committee  review  and  pre-approve  the plan and  scope of Ernst & Young  LLP's
audit,  audit-related,  tax and other services. During 2006, the Audit Committee
pre-approved  100 percent of the  services  described  above under the  captions
"Audit Fees", "Audit-Related Fees," "Tax Services Fees" and "Other Fees."

     The  Company  expects  that  representatives  of Ernst & Young  LLP will be
present at the Annual Meeting to respond to appropriate  questions and to make a
statement if they desire to do so.

                                       10






     The audit report of Ernst & Young LLP on the Company's annual  consolidated
financial  statements for 2006, 2005 and 2004 did not contain an adverse opinion
or a disclaimer of opinion and was not  qualified or modified as to  uncertainty
or audit scope. The audit report of Ernst & Young LLP on management's assessment
that the Company maintained  effective internal control over financial reporting
as of December 31, 2006,  2005 and 2004 did not contain an adverse  opinion or a
disclaimer  of opinion and was not  qualified or modified as to  uncertainty  or
audit scope.

     In  connection  with  the  audits  of  the  Company's  annual  consolidated
financial  statements for 2006, 2005 and 2004, there were no disagreements  with
Ernst  &  Young  LLP on any  matters  of  accounting  principles  or  practices,
financial  statement  disclosure,  or auditing scope or procedures which, if not
resolved to the  satisfaction of such  independent  auditors,  would have caused
such  independent  accountants  to make  reference  to the matter in their audit
report.

     The Board of Directors  unanimously  recommends that  stockholders vote FOR
ratification  of the  selection  of  Ernst & Young  LLP as the  auditors  of the
Company for 2007.

                                   ITEM THREE

          APPROVAL OF AMENDED AND RESTATED EMPLOYEE STOCK PURCHASE PLAN

     There will be  presented  at the Annual  Meeting a proposal  to approve the
Pioneer Natural  Resources  Company Amended and Restated Employee Stock Purchase
Plan,  effective  as of  September  1, 2007 (the  "Plan").  This  amendment  and
restatement  will extend the termination date of the Plan from December 31, 2007
to  December  31,  2017.  The  amendment  and  restatement  of the Plan will not
increase  the  number of shares  authorized  for  issuance  under the Plan.  The
description  set forth below  represents  a summary of the  principal  terms and
conditions of the Plan and does not purport to be complete.  Such description is
qualified in its entirety by reference to the Plan document, a copy of which has
been filed with the SEC as Appendix A to this Proxy Statement.

General

     The Plan was  originally  adopted by the  Company's  Board of Directors and
approved by the  stockholders  of the Company on August 7, 1997,  and a total of
750,000  shares of common stock (the "Plan  Shares")  were reserved for issuance
under the Plan at that time. The Plan was later amended and restated,  effective
as of  December 9, 2005.  The term of the Plan is set to expire on December  31,
2007. As of August 31, 2006 (the ending date of the last completed Option Period
(as defined  below) under the Plan),  280,473  Plan Shares had been issued,  and
469,527 Plan Shares were available for future awards under the Plan.

     The  Company  now  desires to amend and  restate  the Plan,  contingent  on
stockholder  approval,  effective as of September 1, 2007.  This  amendment  and
restatement will not increase the number of Plan Shares  authorized for issuance
under the Plan. Instead, in addition to effectuating certain other modifications
to the Plan,  this  amendment and  restatement  will extend the term of the Plan
until  December 31, 2017,  so that the Plan Shares that remain  available may be
used in  connection  with the grant of future  awards  under the Plan.  The Plan
Shares  that  remain  available  for  future  grants  under  the  Plan as of the
September 1, 2007,  effective date will equal the difference between (1) 750,000
shares and (2) the sum of (A) 280,473 shares (the shares already issued pursuant
to the Plan), and (B) the number of shares issued pursuant to the current Option
Period (which began on January 1, 2007,  and ends on August 31, 2007).  Based on
the significant  motivational  and  performance  benefits that are achieved from
employee  ownership of the Company's  common stock, the Company believes that it
is important to continue  making grants under the Plan by utilizing Plan Shares,
the  issuance  of which has been  previously  approved by  stockholders.  Absent
stockholder  approval of this  amendment  and  restatement,  the current  Option
Period  will  continue in  accordance  with the terms of the Plan but no further
Option Periods will commence under the Plan.

                                       11






Purpose

     The  purpose of the Plan is to provide  employees  of the  Company  with an
opportunity  to  purchase  common  stock of the  Company at a  discount  through
payroll deductions and to align the interests of Company employees with those of
stockholders.  The  Plan,  and the  right  of  participants  to  make  purchases
thereunder,  is intended to qualify under the provisions of sections 421 and 423
of the Internal  Revenue Code of 1986,  as amended  (the  "Code").  See "Federal
Income Tax Consequences" below.

Administration

     The Plan is administered by a committee (the "Plan Committee") appointed by
the  Board  of  Directors.  All  questions  of  interpretation  of the  Plan are
determined by the Plan Committee, whose decisions are final and binding upon all
participants.

Eligibility

     All employees  (other than  officers) of the Company and of each present or
future parent or subsidiary  corporation  of the Company,  within the meaning of
sections  424(e) and (f) of the Code,  other than a foreign parent or subsidiary
corporation whose participation has not been approved by the Board of Directors,
who have been employed for at least six (6) months prior to the applicable  Date
of Grant (as defined  below) and who are  customarily  employed at least  twenty
(20)  hours  per week and at least  five (5)  months  per year are  eligible  to
participate  in the Plan,  subject  to  certain  limitations  imposed by section
423(b) of the Code (an "Eligible  Employee").  A participant  who withdraws from
the Plan during an Option  Period (as  defined  below) will be eligible to again
participate in the Plan in a subsequent Option Period,  provided the participant
is otherwise an Eligible Employee at that time.

Offering Dates

     The Company  offers  Eligible  Employees  the option to purchase  shares of
common  stock  under  the  Plan.  Except  as  otherwise  determined  by the Plan
Committee,  these  options  are  granted  on  January 1 of each year (a "Date of
Grant"). The term of each option granted under the Plan is for a period of eight
(8) months, beginning on the Date of Grant and ending on the following August 31
(a "Date of Exercise")  (each such eight (8) month period is herein  referred to
as an "Option Period").

Purchase Price

     The purchase price per share at which shares of common stock are sold under
the Plan is an amount  equal to the lesser of (i) 85 percent of the fair  market
value of the common stock on the Date of Exercise or (ii) 85 percent of the fair
market  value of the common stock on the Date of Grant (the  "Purchase  Price").
The fair  market  value of a share of common  stock on a given  date is the last
reported sale price,  regular way, on the  composite  tape of the New York Stock
Exchange (the "NYSE") on that day.

                                       12






Payment of Purchase Price; Payroll Deductions

     The purchase price of the shares of common stock to be purchased  under the
Plan is accumulated by payroll  deductions  during each Option Period.  For each
participant,  these  payroll  deductions  may not exceed:  (i) 15 percent of the
amount of  eligible  compensation  (which is  generally  defined  in the Plan to
include all wages, salary,  commissions and bonuses) from which the deduction is
made, or (ii) an amount which will result in noncompliance  with the limitations
described below in the section entitled "Purchase of Stock; Exercise of Option."
Additionally,  a deduction  for any payroll  period may not be in an amount less
than  $20.00.  Such  payroll  deductions  are  credited to a book entry  account
established  for  each  participant.   An  employee  may,  pursuant  to  certain
limitations,  discontinue  participation  in the  Plan,  but may  not  otherwise
increase or decrease the rate of payroll deductions during any Option Period. If
approved  by  the  Plan  Committee,  (i)  a  participant  may  continue  payroll
deductions  during a paid leave of absence,  or (ii) a participant  on an unpaid
leave of absence may continue  participation in the Plan by making cash payments
on  the  participant's  normal  pay  days  equal  to the  participant's  payroll
deductions.

Purchase of Stock; Exercise of Option

     The maximum  number of shares placed under option to a  participant  in any
Option Period cannot exceed the lesser of (i) 1,000 shares,  and (ii) the number
determined  by dividing (A) the amount of payroll  deductions  during the Option
Period (including any carryover amounts from the preceding Option Period and any
cash payments made by the participant  during an unpaid leave of absence) by (B)
the Purchase Price, excluding all fractions. Unless a participant withdraws from
the Plan,  the  participant's  option for the  purchase  of shares is  exercised
automatically on each Date of Exercise for the maximum number of whole shares at
the applicable  price.  As soon as practicable  following the end of each Option
Period, the Company deposits in each participant's  brokerage account the number
of whole  shares of common stock  purchased  for such Option  Period.  Shares of
common stock purchased under the Plan are  uncertificated  and evidenced by book
entry  in  the  brokerage  accounts  unless  a  certificate  is  requested  by a
participant  in  writing.  Any  balance  remaining  in a  participant's  account
following  the exercise of the  participant's  option in an Option Period is, at
the  Company's  election,  either  carried  over to the next  Option  Period  or
refunded to the participant.

     Notwithstanding the foregoing, no Eligible Employee is granted an option to
purchase shares of common stock under the Plan if,  immediately  after the grant
of the option,  the employee  would own five percent or more of the voting power
or value of all classes of stock of the Company or its subsidiaries,  nor is any
Eligible Employee granted an option which would permit the employee to purchase,
pursuant to the Plan, more than $25,000 worth of common stock (determined at the
fair  market  value of the  shares  at the time the  option is  granted)  in any
calendar year.

Withdrawal

     Any  participant  may withdraw in whole from the Plan (i) at any time prior
to 30 days before the Date of Exercise  relating to a particular  Option Period,
or (ii) for a subsequent  Option Period, by giving a notice of withdrawal to the
Company at least 30 days prior to the beginning of such Option  Period.  Partial
withdrawals  are not  permitted.  A participant  who wishes to withdraw from the
Plan  must  timely  deliver  to the  Company a notice  of  withdrawal  on a form
prepared by the Plan Committee.  The Company,  promptly  following the time when
the notice of withdrawal is delivered,  refunds to the participant the amount of
the cash balance in his account under the Plan.  Thereafter,  the  participant's
payroll deduction  authorization  and the participant's  interest in unexercised
options under the Plan terminates  automatically  and without any further act on
the participant's part.

                                       13






Capital Changes

     Whenever  any  change  is made in the  common  stock,  by reason of a stock
dividend  or by  reason  of  subdivision,  stock  split,  reverse  stock  split,
recapitalization,  reorganization,  combinations, reclassification of shares, or
other  similar  change,  appropriate  action is taken by the Plan  Committee  to
adjust  accordingly the number of shares subject to the Plan, the maximum number
of shares that may be subject to any option,  and the number and purchase  price
of shares subject to options outstanding under the Plan.

Nonassignability

     Each option is  assignable or  transferable  only by will or by the laws of
descent and distribution and is exercisable during the optionee's  lifetime only
by the  optionee.  The  Company  will  not  recognize  and is  under  no duty to
recognize any assignment or purported assignment by an employee of his option or
of any  rights  under his  option,  and any such  attempt  may be treated by the
Company as an election to withdraw from the Plan.

Amendment and Termination of the Plan

     The Board of Directors,  in its  discretion,  may terminate the Plan at any
time with  respect to any shares for which  options have not been  granted.  The
Board of Directors  has the right to alter or amend the Plan or any part thereof
from time to time  without the  approval  of the  stockholders  of the  Company;
provided, that no change in any option granted may be made that would impair the
rights of the participant without the consent of such participant; and provided,
further,  that the Plan  Committee may not make any alteration or amendment that
would increase the aggregate number of shares that may be issued pursuant to the
provisions of the Plan (other than as a result of the  anti-dilution  provisions
of the Plan), change the class of individuals  eligible to receive options under
the Plan,  cause options issued under the Plan to fail to meet the  requirements
for  employee  stock  purchase  plans as defined in section 423 of the Code,  or
otherwise  modify the  requirements as to eligibility for  participation  in the
Plan,  without the  approval of the  stockholders  of the  Company.  The current
termination  date of the Plan is December 31,  2007,  and if the  amendment  and
restatement of the Plan is approved by the  stockholders  at the Annual Meeting,
the termination date of the Plan will be extended to December 31, 2017.

Federal Income Tax Consequences

     The Plan, and the right of  participants to make purchases  thereunder,  is
intended to qualify  under the  provisions  of sections 421 and 423 of the Code.
Under these  provisions,  no income is taxable to a  participant  at the time of
grant of the option or purchase of the shares.  Upon  disposition of the shares,
the  participant  is  generally  subject to tax in an amount that is  determined
based upon the participant's holding period. If the shares have been held by the
participant  for more than two years after the Date of Grant,  the lesser of (A)
the  excess  of the  fair  market  value  of the  shares  at the  time  of  such
disposition  over the Purchase  Price or (B) the excess of the fair market value
of the  shares  at the  Date of Grant  over the  Purchase  Price is  treated  as
ordinary  income,  and any further gain or loss is treated as long-term  capital
gain or loss.  If the shares are disposed of before the  expiration  of this two
year  holding  period,  the excess of the fair market value of the shares on the
Date of Exercise over the Purchase Price is treated as ordinary income,  and any
further gain or loss on such disposition is long-term or short-term capital gain
or loss,  depending  on the holding  period.  The  Company is not  entitled to a
deduction for amounts taxed as ordinary  income or capital gain to a participant
except  to  the  extent  of  ordinary  income  reported  by  participants   upon
disposition of shares within two years from the Date of Grant.

     The foregoing  brief summary of the effect of federal income  taxation upon
the participants in the Company with respect to the purchase of shares under the
Plan  does not  purport  to be  complete,  and  reference  should be made to the
applicable  provisions of the Code.  In addition,  this summary does not discuss
the tax  consequences of a  participant's  death or the provisions of the income
tax laws of any municipality, state or foreign country that may apply.

                                       14





Employee Stock Purchase Plan Benefit Table

     As of the date of this Proxy  Statement,  no  employee  of the  Company has
subscribed  for or  purchased  any  shares  under  the Plan for  delivery  after
December 31, 2007, the current termination date.  Directors and officers are not
eligible  to  participate  in the  existing  Plan,  and will not be  eligible to
participate in the amended and restated Plan, if approved.  The following  table
sets  forth the number of Plan  Shares  purchased  and the  dollar  value of the
benefit received by those employees participating in the existing Plan in 2006:



                                Groups                           Number of Shares    Value of Benefit (1)
                                                                 ----------------   --------------------
                                                                              
All Executive Officers as a Group                                              --        $            --
Non-Executive Director Group                                                   --                     --
Non-Executive Officer Employee Group (approximately 500 persons)           43,879             274,682.54
                                                                           ------        ---------------
Total                                                                      43,879        $    274,682.54
                                                                           ======        ===============

-----------
(1)  Represents the product of (i) the number of shares purchased times (ii) the
     difference  between the  Purchase  Price of $35.45 and $41.71,  the closing
     price  of the  Company's  common  stock on  August  31,  2006,  the Date of
     Exercise.



     If the Plan submitted to  stockholders  is not approved by  stockholders at
the Annual  Meeting,  no shares will be sold under the Plan after its expiration
on December 31, 2007.

     The Board of Directors  unanimously  recommends that  stockholders vote FOR
the  approval of the Pioneer  Natural  Resources  Company  Amended and  Restated
Employee Stock Purchase Plan.

                      EQUITY COMPENSATION PLAN INFORMATION

     The following table provides certain information about the Company's equity
compensation plans as of December 31, 2006:


                                                                                           Number of Securities
                                                  Number of                               Remaining Available for
                                                Securities to                              Future Issuance Under
                                                  be Issued                                 Equity Compensation
                                                Upon Exercise    Weighted Average            Plans (Excluding
                                               of Outstanding    Exercise Price of      Securities Reflected in the
                                                 Options (1)     Outstanding Options         First Column) (2)
                                               --------------    -------------------    ---------------------------
                                                                               
Equity Compensation Plans Approved by
Security Holders (3):
   Pioneer Natural Resources Company:
     2006 Long-Term Incentive Plan                         --                     --                      4,525,451
     Long-Term Incentive Plan (adopted 1997)        1,464,609                 $20.99                             --
     Employee Stock Purchase Plan                          --                     --                        469,527
   Predecessor plans                                  136,886                 $14.39                             --
                                                    ---------                                             ---------
                                                    1,601,495                                             4,994,978
                                                    =========                                             =========

-----------
(1)  There are no  outstanding  warrants  or  equity  rights  awarded  under the
     Company's  equity   compensation  plans.  The  securities  do  not  include
     restricted  stock  awarded  under the Company's  Long-Term  Incentive  Plan
     (adopted 1997) and the 2006 Long-Term Incentive Plan.
(2)  In May 2006, the  stockholders  of the Company  approved the 2006 Long-Term
     Incentive Plan, which provides for the issuance of up to 4.6 million shares
     of common stock. No additional awards may be made under the prior Long-Term
     Incentive  Plan.  The number of remaining  securities  available for future
     issuance  under the Company's  Employee Stock Purchase Plan is based on the
     original  authorized  issuance of 750,000  shares less  280,473  cumulative
     shares issued through  December 31, 2006.  The Company  expects to issue to
     participants approximately 54,000 shares of common stock under the Employee
     Stock Purchase Plan during the current  Option Period,  assuming a purchase
     price of 85 percent  of the fair  market  value of the common  stock on the
     Date of Grant (if the fair  market  value on the Date of Exercise is lower,
     the Purchase Price will be lower and more shares will be issued).
(3)  All equity compensation plans have been approved by security holders.



                                       15





                                  COMPENSATION

Compensation of Directors

                        2006 DIRECTOR COMPENSATION TABLE

     The  table  below  summarizes  the  compensation  paid  by the  Company  to
non-employee directors during 2006:



         Name            Fees Earned or   Stock Awards (1), (2)      All Other          Total
                          Paid in Cash        (3) and (4)         Compensation (5)
                               ($)                 ($)                   ($)             ($)
         (a)                   (b)                 (c)                   (g)             (h)
----------------------   --------------   ---------------------   ----------------   -----------
                                                                          
James R. Baroffio            $   62,515              $   73,333          $     601    $  136,449
Edison C. Buchanan           $       57              $  131,389          $     957    $  132,403
R. Hartwell Gardner          $       31              $  144,722          $   2,817    $  147,570
Linda K. Lawson              $   62,515              $   73,333          $       -    $  135,848
Andrew D. Lundquist          $   30,015              $   88,889          $   7,062    $  125,966
Charles E. Ramsey, Jr.       $       31              $  143,611          $       -    $  143,642
Frank A. Risch               $   64,390              $  115,000          $     657    $  180,047
Mark S. Sexton               $   55,015              $   73,333          $  41,255    $  169,603
Robert A. Solberg            $   28,805              $  118,333          $     978    $  148,116
Jim A. Watson                $   62,515              $  115,000          $       -    $  177,515
James L. Houghton (6)        $   14,375              $    5,003          $       -    $   19,378
Jerry P. Jones (6)           $   45,625              $   20,000          $   1,671    $   67,296

-----------
(1)  Stock awards represent director  compensation  attributable to stock awards
     for  director  services  provided  to the  Company  during  the year  ended
     December  31,  2006,  determined  in  accordance  with  the  provisions  of
     Financial  Accounting  Standards  Board  Statement of Financial  Accounting
     Standards No. 123(R), "Share-Based Payment" ("SFAS 123(R)").
(2)  The grant-date fair values of stock awards granted to directors during 2006
     were as follows:  (i) for Messrs.  Baroffio,  Lundquist,  Risch, Sexton and
     Watson and Mrs. Lawson, $79,985; (ii) for Mr. Buchanan, $142,443; (iii) for
     Messrs. Gardner and Ramsey, $154,969; and (iv) for Mr. Solberg, $147,445.
(3)  Aggregate director stock awards for which restrictions had not lapsed as of
     December 31, 2006, totaled (i) 1,871 shares for Messrs. Baroffio, Lundquist
     and Sexton and Mrs. Lawson, (ii) 2,601 shares for Mr. Buchanan, (iii) 2,748
     shares for Messrs. Gardner and Ramsey; (iv) 3,907 shares for Mr. Risch; (v)
     2,660  shares for Mr.  Solberg;  and (vi) 3,126 shares for Mr.  Watson.  In
     accordance with director  elections,  shares for which vesting services had
     been performed but for which share  issuance has been deferred  totaled (i)
     3,705 shares for Mr.  Buchanan,  (ii) 4,181 shares for Mr.  Gardner,  (iii)
     2,908 shares for Mr.  Lundquist  and (iv) 4,181 shares for Mr. Ramsey as of
     December 31, 2006.
(4)  Aggregate  vested  options to  purchase  the  Company's  common  stock that
     remained  unexercised  by  directors  as of December  31, 2006  totaled (i)
     10,000 options for Mr. Baroffio; (ii) 16,236 options for Mr. Gardner; (iii)
     10,000 options for Mr. Ramsey; and (iv) 9,000 options for Mr. Houghton.
(5)  All  other  compensation   includes  travel  and  entertainment   costs  of
     directors'  spouses,  and also includes cash  consideration  payable to the
     Messrs.  Lundquist  and  Sexton  in  the  amount  of  $5,744  and  $41,255,
     respectively,  in connection  with the Company's 2004 merger with Evergreen
     Resources,  Inc., which  consideration  was deferred in accordance with the
     terms of the merger until the exercise of certain  Evergreen  stock options
     assumed by the Company.
(6)  Mr. Houghton  retired from the Board in December 2005 and Mr. Jones retired
     from the Board in May 2006.



     The Board of  Directors  believes  providing  competitive  compensation  is
necessary to attract and retain qualified non-employee  directors.  The Board of
Directors  believes that the  compensation  package should require a significant
portion  of the  total  compensation  package  to be  equity-based  to align the
interests of the directors and the Company's stockholders, but should also allow
each director the  flexibility  to choose to receive a portion of the director's
compensation in cash.

                                       16





     The elements of compensation for the Company's  non-employee  directors for
the 2006-2007  director year,  which runs from the annual meeting of 2006 to the
annual meeting of 2007, are as follows:

     o   Each  non-employee  director  receives  an  annual base retainer fee of
         $50,000  and  an  annual  fee of  $10,000  for service  on one  or more
         committees.
     o   Each non-employee  director receives an  annual equity award of $80,000
         in restricted stock units,  which vests one year  following the date of
         the award.
     o   Audit Committee members receive an additional $7,500 annual fee.
     o   The  geosciences  specialist  on  the  Board of  Directors  receives an
         additional $7,500 annual fee.
     o   The lead director receives an additional $15,000 annual fee.
     o   The chairman  of the  Audit  Committee  receives  an  additional $7,500
         annual fee.
     o   The chairman  of the  Compensation  Committee  receives  an  additional
         $2,500 annual fee.

     Additionally, each non-employee director is provided information technology
support by the  Company  and is also  reimbursed  for travel  expenses to attend
meetings of the Board of Directors or its committees,  travel and  entertainment
expenses for each  director's  spouse who is invited to  accompany  directors to
meetings  of the Board of  Directors,  director  education,  seminars  and trade
publications.  No additional  fees are paid for attendance at Board of Directors
or  committee   meetings.   The  Company's  CEO  does  not  receive   additional
compensation for serving on the Board of Directors.

     Under this  compensation  program,  non-employee  directors are eligible to
receive  their fees in the form of stock  options,  stock  appreciation  rights,
restricted stock,  restricted stock units or performance  units. The Company can
use these awards instead of cash to pay its  non-employee  directors all or part
of their annual fees. The Board of Directors determines the form (or combination
of  forms)  of  compensation   each  year,  based  on  the  economic  and  other
circumstances  at the time of award and based on its view of which  awards  will
best align the interests of the stockholders and the Board of Directors. For the
2006-2007  director  year,  the  non-employee   directors  could  choose  to  be
compensated  for their annual  directors' fees in (i) 100 percent cash, (ii) 100
percent restricted stock units ("RSU") or (iii) a 50/50 combination thereof. The
restricted  stock  units  received  in  payment of annual  directors'  fees vest
quarterly  on a pro rata  basis  during  the  director  year.  The price used to
calculate the number of restricted  stock units granted with respect to both the
annual  equity  award  and any  fees  that a  director  chooses  to  receive  in
restricted  stock units is based on the closing  stock price on the day prior to
the Company's annual meeting of stockholders.

     Each  non-employee  director,  upon  commencement  of initial  service as a
director,  receives $150,000 in restricted stock units.  Directors who served on
the board of directors of a company that was acquired or merged into the Company
and joined the Company's  Board of Directors as a result of the  acquisition  or
merger are not eligible for this award.  The price used to calculate  the number
of restricted stock units granted is based on the closing stock price on the day
prior to the day the director is elected to serve on the Board of Directors. The
shares granted are subject to vesting and transfer  restrictions that lapse with
respect  to  one-third  of the  shares  each year  following  the  grant  over a
three-year period.  Retirement before the third anniversary of the grant results
in pro rata vesting based on the number of quarterly  meetings  remaining in the
three-year vesting period.

     The  vesting  of  ownership  and the  lapse  of  transfer  restrictions  on
restricted stock units to non-employee  directors is accelerated in the event of
the death or disability of the director or a change in control of the Company.

     To support the Company's  commitment to significant  stock  ownership,  the
Company has established an ownership  guideline that non-employee  directors own
stock with a value  equal to at least five times  each  director's  annual  base
retainer  fee. The  non-employee  directors  have three years after  joining the
Board of Directors to meet this  guideline.  All  non-employee  directors are in
compliance with this ownership guideline.

                                       17






Compensation of Executive Officers

                      COMPENSATION DISCUSSION AND ANALYSIS

Overview

     Successful  execution of the  Company's  strategic  plan is  predicated  on
attracting  and  retaining  a talented  and  highly  motivated  executive  team.
Unwanted  turnover  among the  Company's  key  executives  can be very costly to
stockholders.  Therefore,  the Company's executive compensation program has been
designed to support its long-term strategic  objectives,  as well as address the
realities of the competitive market for talent.

Compensation Principles

     The Company's executive compensation program has been designed to provide a
total  compensation  package  that  allows the  Company to  attract,  retain and
motivate  executives  necessary to capably  manage the Company's  business.  The
Company's executive compensation program is guided by several key principles:

     o   To be fair to both the executive and the Company;
     o   To  provide  total  compensation  opportunities  at  levels  that   are
         competitive for comparable positions at companies with whom the Company
         competes for talent;
     o   To provide financial incentives to the Company's  executives to achieve
         key financial and operational objectives set by the Board of Directors;
     o   To provide an appropriate  mix of fixed and  variable pay components to
         establish a "pay-for-performance" oriented compensation program;
     o   To provide  compensation  that takes into  consideration the education,
         training  and knowledge  that is  specific to  each job  and the unique
         qualities the individual brings to the job; and
     o   To   recognize  an   executive's  commitment   and  dedication  in  the
         performance of the job and to support the Company's culture.

Establishing the Executive Compensation Program

     The Company's executive  compensation  program takes into consideration the
marketplace for the individuals  that the Company wishes to attract,  retain and
motivate;  the Company's past  practices;  and the talents that each  individual
executive brings to the Company.

     Role  of  the  Compensation  and  Management  Development  Committee.   The
Compensation Committee administers the Company's executive compensation program.
The  Compensation  Committee  establishes  the  Company's  overall  compensation
strategy to ensure that the Company's executives are rewarded  appropriately and
that  executive  compensation  supports  the  Company's  business  strategy  and
objectives.  In discharging  its duties,  the  Compensation  Committee  annually
approves  specific  corporate goals and objectives  relative to Mr.  Sheffield's
compensation;  reviews Mr.  Sheffield's  performance in meeting these  corporate
goals and  objectives;  and  determines  the  individual  elements  of his total
compensation and benefits.  Prior to finalizing  compensation for Mr. Sheffield,
the  Compensation  Committee  reviews its intentions with the other  independent
directors and receives their input. Mr. Sheffield makes  recommendations  to the
Compensation  Committee  regarding  the  compensation  of  the  named  executive
officers listed on the "Summary Compensation Table" that follows this discussion
(the "NEOs"), and provides  information to the Compensation  Committee regarding
the NEOs'  performance;  however,  the  Compensation  Committee  makes all final
decisions regarding the NEOs' compensation.

     The Compensation Committee utilizes tally sheets to review each executive's
total compensation and potential payouts in the event of a change in control and
for various  terminating events as a check to determine if the compensation plan
design is meeting  the  Compensation  Committee's  objectives.  The  Company has
never, subsequent to the award or payment of compensation,  restated or adjusted
the  performance  measures  upon which the awards or payments were based and, as

                                       18





such,  the  Compensation  Committee  has not  developed a policy  regarding  the
adjustment or recovery of awards or payments under these conditions.

     A  further   description  of  the  duties  and   responsibilities   of  the
Compensation  Committee can be found in "Meetings and  Committees of Directors -
Compensation and Management Development Committee."

     Role  of  the  Compensation  Consultant.  The  Compensation  Committee  has
retained  Mercer as an  outside  advisor to provide  information  and  objective
advice regarding  executive  compensation.  All of the decisions with respect to
the Company's  executive  compensation,  however,  are made by the  Compensation
Committee alone and may reflect factors and  considerations  other than, or that
may differ from, the information and recommendations  provided by Mercer. Mercer
may, from time to time, contact the Company's executive officers for information
necessary to fulfill its  assignment and may make reports and  presentations  to
and on  behalf  of the  Compensation  Committee  that  the  Company's  executive
officers also receive.

     Role of  Executives.  The  Company's  Administration  and  Human  Resources
Departments  assist  the  Compensation  Committee  and Mercer in  gathering  the
information  needed  for their  respective  reviews of the  Company's  executive
compensation program. This assistance includes assembling requested compensation
data for the NEOs. The Compensation  Committee also reviews the  recommendations
of the Company's CEO with respect to the compensation of the other NEOs.

     Benchmarking.  In  conjunction  with  Mercer,  the  Compensation  Committee
periodically  benchmarks the  competitiveness  of its  compensation  programs to
determine how well actual  compensation levels compare to overall philosophy and
competitive  markets.  The peer group generally  consists of independent oil and
gas exploration  companies having similar asset,  revenue and capital investment
profiles as the Company. The Compensation  Committee believes that these metrics
are appropriate for determining peers because they provide a reasonable point of
reference  for  comparing  like  positions  and  scope  of  responsibility.  The
Compensation  Committee  seeks to  construct  a peer  group with  roughly  equal
numbers  of  companies  that are  larger  than  and  smaller  than the  Company.
Following the Company's  divestiture  of  significant  assets in early 2006, the
peer group was modified from the 2005 peer group,  which  included  companies of
greater revenue scope, to include the following  companies for 2006:  Chesapeake
Energy  Corporation,   Cimarex  Energy  Co.,  EOG  Resources,  Inc.,  Kerr-McGee
Corporation,   Newfield   Exploration   Company,   Noble  Energy,  Inc.,  Plains
Exploration  and  Production  Company,   Pogo  Producing  Company,   Quicksilver
Resources Inc., Range Resources Corporation and XTO Energy Inc.

     In addition,  in order to  accurately  reflect the  competitive  market for
executive  talent,  survey data for similar  positions at other  similarly-sized
energy  companies,  with a focus on oil and gas  exploration,  are  analyzed  to
develop a broader market point of reference.  Surveys reviewed were published by
leading human  resource  organizations,  including  Mercer.  These surveys cover
approximately 20 to 70 companies per positional match.

     The   Company's   benchmarking   consists  of  all   components  of  direct
compensation,  including  base  salary,  annual  incentive  bonus and  long-term
incentives. Information gathered from the proxy statements of the peer group for
the Company's CEO and other NEOs and Mercer's proprietary databases are reviewed
as part of the benchmarking  effort.  Given the changing nature of the Company's
industry,  the actual companies used in the benchmarking  process will vary from
year to year, and the  Compensation  Committee  intends to review the peer group
each year and make changes if appropriate.

                                       19







Elements of the Company's Compensation Program

     Components of Compensation. There are four main components of the Company's
executive compensation program:

     o   Base salary;
     o   Annual cash incentives;
     o   Long-term equity incentives; and
     o   Other compensation, including perquisites and retirement benefits.

     The Compensation  Committee  considers each of these components  within the
context of a total rewards framework.  The proportion of compensation  allocated
to  each of  these  components  is  generally  designed  to be  consistent  with
competitive practices among exploration and production companies and the markets
in which the Company competes for executive talent.  The Compensation  Committee
believes  that the  appropriate  balance  of these  components  will  align  the
interests of  executives  with the Company's  stockholders  and  facilitate  the
creation of value for stockholders.

     In making executive  compensation  decisions,  the Company is guided by the
compensation   philosophy  described  above.  The  Compensation  Committee  also
considers  historical  compensation  levels,  competitive  pay  practices at the
companies in the Company's  peer group and the relative  compensation  levels of
the named executive officers among that group. The Compensation  Committee views
the  executives  below  the CEO level as a team with  diverse  duties,  but with
similar  authority  and  responsibility  and  factors  this team  approach  into
determining pay decisions for this group. The Company may also consider industry
conditions,  industry life cycle,  corporate performance as compared to internal
goals  as  well  as to the  peer  group  and the  overall  effectiveness  of the
Company's compensation program in achieving desired results.

     Balance of Compensation  Components.  The Company's program offers the NEOs
the  opportunity  to  receive  base pay at the  median of the  market  and total
compensation  that is above or below target,  depending upon the  achievement of
performance  hurdles in the annual  incentive  plan and the long-term  incentive
plan. As a result, the compensation program is designed to pay executives at the
median of the market for target  performance,  significantly above the median in
times of superior  performance  and  significantly  below the median in times of
poor performance.

     In addition,  the Company  believes that as an executive's  leadership role
expands  and the  associated  scope,  duties and  responsibilities  increase,  a
greater portion of the  executive's  total  compensation  should be variable and
performance-driven and have a longer-term emphasis.

     The following sections describe in greater detail each of the components of
the Company's executive  compensation  program, why they were selected,  and how
the amounts of each element were determined for 2006.

Base Salary

     Base salary is designed to compensate  the NEOs in part for their roles and
responsibilities,  and to provide a stable and fixed level of compensation  that
serves as a retention tool  throughout the  executive's  career.  In determining
base salaries,  the Company considers each executive's role and  responsibility,
unique skills and future  potential  with the Company,  along with salary levels
for similar  positions  in the  Company's  competitive  market and  internal pay
equity.

     The  Company's  compensation  philosophy  is to target base salaries at the
market median for each NEO.

     In general,  base salary represents  approximately 20 percent to 25 percent
of the NEO's  overall  compensation  package,  assuming  that the  Company is at
target performance levels for its incentive programs.

                                       20






Annual Cash Incentives

Overview

     The annual  incentive bonus program is designed to recognize and reward the
NEOs with cash payments based on both the individual executive's performance and
the Company's success in achieving its preset financial metrics for the year.

     Target  award  levels are set as a percent of an  executive's  base salary.
Overall, the targets are set at the median of the Company's  competitive market.
These target award  levels are reviewed  periodically  by the Board of Directors
and for 2006, the target awards for the Company's NEOs ranged from 65 percent to
100 percent of base salary.

     The Company's  annual  incentives  are  predicated on internal  performance
metrics that drive the Company's  success  rather than the  achievement of goals
measured relative to peer company performance.  The Compensation Committee views
these goals as being aligned with the Company's publicly disclosed operating and
financial targets and although it considers the goals  challenging,  it believes
that they are achievable if the Company's  expectations as to industry,  Company
and  individual  performance  are  realized.  The  Compensation  Committee  also
establishes certain  non-financial  objectives that vary by NEO depending on the
NEO's area of responsibility. Since the Company's culture is focused on teamwork
and  communication,  the NEO's achievement of the individual goals is also based
on the Compensation Committee's evaluation of the NEO's individual leadership of
their  departments and reporting groups and on the contribution  made by the NEO
to the senior management leadership team and to the Company's success in
achieving its annual goals.

     In evaluating  performance  against the goals and  objectives,  the Company
does not employ a formula or  weighting  of the goals,  but rather  subjectively
evaluates performance in light of oil and gas industry fundamentals and assesses
how  effectively   management  adapts  to  changing   industry   conditions  and
opportunities  during the year. In determining the actual annual incentive bonus
payouts,  the  Compensation  Committee  also takes into  consideration  expected
annual incentive bonus payouts within the oil and gas industry.  On average, the
target annual incentive award values currently represent about 20 percent of the
total compensation package.

Current Framework

     Working with management,  the Compensation  Committee  established the 2006
performance  metrics  and a goal or goal  range  for each  metric.  The  metrics
represented many of the operating and financial measures critical to the success
of exploration and production companies and therefore supported the Compensation
Committee's  philosophy that the compensation  package reflect overall corporate
performance.

                                       21






       The 2006 performance metrics and goals or goal ranges were as follows:



                  Metric                                    Goal
                  ------                                    ----

                                              
Production (barrel of oil equivalent ("BOE"))    32,000,000 - 35,000,000
Operating Costs ($/BOE)
         Base                                    $7.50 - $8.50
         Total Operating Cost                    $11.00 - $12.00
Safety and Environmental                         Subjective
G&A Overhead ($/BOE)                             $3.75 - $4.25
Debt                                             $1,100,000,000 - $1,400,000,000
Debt/EBITDAX (1)                                 Less than 2.5 times
Debt/Book                                        Less than 30%
Finding Cost ($/BOE) (2)                         $15.00 - $20.00
Reserve Replacement Percentage (3)               Greater than 250%
Return on Equity                                 10% - 15%

------------
(1)  "EBITDAX"   represents   earnings  before   depletion,   depreciation   and
     amortization  expense;  impairment of long-lived  assets;  exploration  and
     abandonments; hurricane activity; accretion of discount on asset retirement
     obligations;   interest  expense;   income  taxes;  gain  or  loss  on  the
     disposition  of  assets;  loss on  extinguishment  of  debt;  effects  from
     discontinued  operations;  commodity  hedge related  activity;  stock-based
     compensation; amortization of deferred revenue; and other noncash items.
(2)  "Finding  Costs" is  determined  by dividing  total  costs  incurred by the
     summation  of annual  proved  reserves,  on a BOE  basis,  attributable  to
     revisions  of  previous  estimates,   purchases  of  minerals-in-place  and
     extensions  and  discoveries . Consistent  with industry  practice,  future
     capital costs to develop  proved  undeveloped  reserves are not included in
     costs incurred.
(3)  "Reserve  Replacement" is the summation of annual proved reserves, on a BOE
     basis,  attributable  to  revisions  of previous  estimates,  purchases  of
     minerals-in-place   and  extensions  and  discoveries   divided  by  annual
     production of oil, natural gas liquids and natural gas, on a BOE basis.



     The Company did not  establish a specific net asset value  metric,  but the
Compensation  Committee  reviewed with  management the Company's net asset value
per share  calculation to understand how value was increased or decreased during
2006.  Changes in net asset value are important in the Compensation  Committee's
overall  assessment of the Company's  performance  and one of the key factors in
the  Compensation  Committee's  discretionary   determination  of  final  annual
incentive bonus awards.

     The   Compensation   Committee  also   established   for  2006   individual
non-financial objectives for each NEO based on the operational, project-oriented
and other goals that the  Compensation  Committee,  working with Mr.  Sheffield,
determined   to  be   critical  to  the   performance   of  the  NEO's  area  of
responsibility.

     In February 2007, the  Compensation  Committee  reviewed the Company's 2006
performance  relative to internal  metrics  against the peers and  evaluated the
individual  performance  of each  NEO.  Based on this  performance  review,  the
Compensation Committee set the base level of 2006 annual incentive bonus payouts
at 110 percent of target for the NEOs,  excluding  Mr.  Sheffield  and Mr. Dove.
Individual  awards  were  then  adjusted  from  the  base  level  based  on  the
performance of that individual. For Mr. Sheffield and Mr. Dove, the Compensation
Committee also reviewed the Company's stock price  performance for calendar year
2006.  Based on that review,  Mr.  Sheffield  and Mr. Dove were  awarded  annual
incentive bonuses at target levels.

Long-Term Equity Incentives

Overview

     The  Company's   long-term  incentive  awards  are  used  to  link  Company
performance and increases in stockholder value to the total compensation for the
Company's NEOs. These awards are also key components of the Company's ability to
attract and retain the  Company's  key NEOs.  Over the past several  years,  the
Company  modified its approach to long-term  incentive  awards from solely stock
options to a combination of stock options and restricted stock and finally to an
approach  beginning in 2004 that included only  restricted  stock.  For 2007, in
order to more closely  align the  interests of the NEOs with  stockholders,  the
Company made grants in both restricted  stock and performance  units under a new
performance  unit  program (See "2007  Long-Term  Incentive  Program"  below for
additional details).

                                       22






     The target award levels are set by the Board of Directors  and expressed as
a  percentage  of base salary for each NEO.  Targets  are  intended to be at the
median of the  Company's  peer  group,  consistent  with the  Company's  overall
philosophy.  Grant levels in any given year may deviate on a discretionary basis
from the median of the  market  based on  measuring  the  Company's  performance
against internal metrics,  total  shareholder  return ("TSR") compared to a peer
group and individual performance.  The Compensation Committee also considers the
competitive environment for experienced oil and gas executives and the retention
value of long-term  incentive awards. The Compensation  Committee generally does
not consider the size or current value of prior  long-term  incentive  awards in
determining  future award levels because prior awards are considered as only one
component of a total  compensation  package determined in the year awarded to be
competitive and appropriate.

     The annualized  value of the awards to the Company's NEOs is intended to be
the largest component of the Company's overall compensation package. On average,
and  assuming  performance  is  at  target,  these  awards  currently  represent
approximately  55  percent  to 60  percent  of the total  compensation  package,
consistent with the Company's  emphasis on linking  executive pay to stockholder
value.

     Restricted  stock awards to executive  officers vest on a three-year  cliff
vesting schedule. Grants made under the Company's performance unit plan for 2007
are earned over a three-year performance period. The Company believes that these
mechanisms  keep  executives  focused on the creation of  long-term  stockholder
value. The vesting of restricted  stock and performance unit awards  accelerates
upon a change in control.  The  Compensation  Committee  believes that providing
this benefit is in line with the Company's compensation  philosophy and provides
continuity  of  management  in the event of an actual  or  threatened  change in
control,  and this  practice  was  confirmed by Mercer to be in line with market
practice for the Company's  peers.  Furthermore,  the Company does not sponsor a
defined benefit retirement plan as the Compensation  Committee believes that the
accumulation of Company stock is the preferred method to encourage the Company's
NEOs to build a retirement portfolio.

Current Framework

     In evaluating 2006 award levels,  the Compensation  Committee  reviewed the
Company's  three- and  five-year  performance  against  the  following  internal
metrics. The Company did not employ a formula or weighting of the goals.



                     Metric                              Goal
                     ------                              ----

                                                
      Reserve Replacement Percentage               125% - 150%
      Finding Cost ($/BOE)                         $6.50 - $9.00
      Net Asset  Value Per Share  Increase (1)     5%
      Production Growth                            Prior annual goals

------------
(1)  "Net Asset Value Per Share" is an estimate of fair value. In the context of
     determining  Net Asset  Value Per Share,  the Company  adds other  tangible
     assets  adjusted for working  capital and deducts  long-term debt and other
     liabilities, including future income taxes and the impact of existing hedge
     positions.



     In addition,  2006 award levels were also  determined  by  considering  the
Company's TSR to the peer group for the previous  three- and five-year  periods.
Finally,  the  Compensation  Committee  evaluated  each  executive's  individual
performance,   contribution  to  the  senior  management   leadership  team  and
leadership provided to the Company.

     After reviewing these factors,  the Compensation  Committee  concluded that
the 2006 long-term  incentive  awards for Mr.  Sheffield and the other NEOs as a
group should be slightly below the 60th percentile to the target market.

                                       23





2007 Long-Term Incentive Program

     At the end of  2006,  the  Company  conducted  a  review  of the  Company's
long-term  incentive award  philosophy with the intent of moving it more in line
with the Company's pay for performance  philosophy.  Based on the results of the
study,  the 2007 long-term  incentive awards to the NEOs were granted 50 percent
in restricted stock and 50 percent in performance  units under a new performance
unit award  program.  Under this  program,  delivery of shares in payment of the
performance  unit  awards will be  contingent  upon the  achievement  of certain
performance criteria.  The Compensation  Committee intends to determine annually
the allocation of future long-term  incentive awards between  restricted  stock,
performance  units and other equity  awards as well as the metrics that would be
applicable to any performance-based award.

     Although certain  compensation  awards, such as the annual incentive bonus,
have  included  a  subjective  evaluation  factor,  the  Compensation  Committee
determined that  performance  under the performance unit award program should be
measured objectively to keep executives in close alignment with stockholders. As
such,  performance  under the 2007  performance  unit award  program is measured
based on relative TSR over a three-year performance period. The Company believes
relative TSR is an appropriate long-term performance metric because it generally
reflects all elements of a company's performance and provides the best alignment
of the interests of management  and the  Company's  stockholders.  Payouts range
from zero  percent  to 250  percent  of a target  number  of units  based on the
relative ranking. The earned units will be paid in stock, and dividends declared
during  the  performance  period  will  be  paid  at the  end of the  three-year
performance period only on shares delivered for earned units, up to a maximum of
target shares.

     In administering  the long-term  incentive plan, award grants currently are
made under the following guidelines:

     o   For existing  employees,  all long-term  incentive  awards are approved
         during the regularly scheduled February Compensation Committee meeting.
     o   Employees hired after the February  Compensation Committee meeting, but
         prior to the regularly scheduled August Compensation Committee meeting,
         receive  long-term  awards  approved  during  the  August  Compensation
         Committee meeting.
     o   The Compensation Committee  retains the discretion to approve long-term
         incentive awards effective on an employee's hire date.
     o   Restricted  stock awards are determined  based on a dollar value, which
         is converted to shares by reference to the average closing price of the
         Company's common stock during the prior calendar year.
     o   The  Company  does  not   time  the  release  of  material   non-public
         information  to  impact  the  value  of  executive  equity compensation
         awards.

Other Compensation

Overview

     The  Compensation   Committee  believes  that  providing   perquisites  and
retirement  benefits  as  components  of  total  compensation  is  important  in
attracting and retaining qualified  personnel;  however,  insofar as the Company
has chosen to emphasize  variable,  performance-based  pay, the Company  takes a
conservative approach to these fixed benefits. Further, retirement plans are not
viewed to be the sole  means by which its  executive  officers  will fund  their
retirement,  as a portion of this need can be satisfied through the accumulation
of Company stock acquired  through equity awards.  As a result,  and because the
costs and the  ultimate  payouts are  difficult  to quantify  and  control,  the
Company has purposely avoided  sponsoring a defined benefit retirement plan or a
supplemental   executive   retirement  plan.  The  Company  provides  a  defined
contribution  401(k) retirement plan with a fixed matching  contribution rate to
all employees,  including the NEOs, and a  non-qualified  deferred  compensation
plan with a fixed  Company  matching  contribution  rate to  certain of its more
highly compensated employees, including the NEOs.

                                       24






     The  Company's  perquisite,  retirement  and  other  benefit  programs  are
established  based  upon an  assessment  of  competitive  market  factors  and a
determination  of what is needed to attract,  retain and  motivate  high caliber
executives.

Perquisites

     The  perquisites  provided  to the NEOs are  payment of country  club dues,
financial counseling services,  annual medical physical exam and personal use of
the  Company's  cell phones and  computers.  The  Company  also pays the cost of
limited spousal travel and the spouse's cost to participate in business  dinners
or events if the spouse is attending at the request of the Company.

     In addition to the above  perquisites,  Mr. Sheffield  receives the premium
for a $1,000,000 term life insurance  policy and the costs for expanded  spousal
travel for Mrs. Sheffield to participate in business dinners and business events
to support Mr. Sheffield.

     The  Company  maintains  a  fractional  ownership  interest  in two private
aircraft.  These  aircraft are made  available for business use to the executive
officers  and  other  employees  of the  Company.  The  Company's  policy  is to
generally  not  permit  employees,  including  executive  officers,  to use  the
aircraft for personal use. The Company  expects  there will be occasions  when a
personal  guest  (including  a family  member)  will  accompany an employee on a
business related flight. In such instances, the Company will follow the Internal
Revenue Service rules and, where  required,  impute income to the employee based
on the  Standard  Industry  Fare Level rates  provided by the  Internal  Revenue
Service.

     The Company's NEOs also  participate in the Company's  welfare benefit plan
on the same basis as the Company's other employees.

Retirement Plans

     All eligible employees of the Company,  including the NEOs, may participate
in the defined  contribution 401(k) retirement plan. The Company contributes two
dollars  for  every  one  dollar  of  basic  compensation  (up  to 5%  of  basic
compensation)  contributed by the participant.  The participant's  contributions
are fully vested at all times, and matching  contributions vest over a period of
four years, with 25 percent vesting for each one-year period of service with the
Company  by the  participant.  Participants  may  make  additional  pre-tax  and
after-tax contributions to the plan subject to plan and Internal Revenue Service
limits.

     The  non-qualified  deferred  compensation   retirement  plan  allows  each
participant  to  contribute  up to 25 percent of base  salary and 100 percent of
annual incentive bonus payments.  The Company  provides a matching  contribution
equal to the participant's contribution, but limited to a maximum of ten percent
of the executive  officer's  base salary.  The Company's  matching  contribution
vests  immediately.  The non-qualified  deferred  compensation plan permits each
executive officer to make investment  allocation  choices for both the executive
officer's  contribution and the Company match to designated mutual funds or to a
self-directed   brokerage  account  offered  as  investment  options  under  the
non-qualified  deferred  compensation  plan.  The  Company  retains the right to
maintain these  investment  choices as  hypothetical  investments or to actually
invest in the executive  officer's  investment choices. To date, the Company has
chosen to actually  invest the funds in the investment  options  selected by the
executive  officers so that the investment  returns are funded and do not create
unfunded liabilities to the Company.

     Participants  may choose to receive  distribution  of their vested benefits
from the non-qualified compensation plan as soon as administratively practicable
(i) after the date of  separation  from  service  with the Company or (ii) after
January 1 of the year  following  the date of  separation  from service with the
Company. A participant's  vested benefits may, at the option of the participant,
be  distributed  in one lump sum, in five annual  installments  or in ten annual
installments.

                                       25






Severance and Change in Control Arrangements

     The  Compensation   Committee  believes   compensation  issues  related  to
severance and change in control events for the NEOs should be addressed  through
contractual  arrangements.  The terms of these agreements are described later in
"Potential Payments Upon Termination or Change in Control." The Company competes
in an industry with a shortage of professionals with oil and gas expertise, long
investment lead times that can affect  short-term  results,  a fluctuating stock
price often directly caused by the commodity price driven nature of the business
and a history  of  merger  and  acquisition  activity.  To  recruit  and  retain
executives,  provide  continuity  of  management  in the  event of an  actual or
threatened change in control and provide the executive with the security to make
decisions  that are in the best  long-term  interest  of the  stockholders,  the
Company enters into severance and change in control  agreements with each of its
executive  officers,  including  each NEO. The  Compensation  Committee  engaged
advisors  knowledgeable  in the  field of  executive  compensation  to assist in
analyzing current market practices and designing an agreement competitive with
market practices.

Stock Ownership Guidelines

     To support the commitment to  significant  stock  ownership,  the Company's
common stock ownership guidelines are as follows:

     o   For the Chairman of the Board of  Directors and CEO, ownership of stock
         with a value equal to at least five times annual base salary.
     o   For the President and other NEOs, ownership of stock with a value equal
         to at least three times annual base salary.
     o   The NEOs generally have three years after becoming an executive officer
         to meet the guideline.

     In evaluating compliance by officers and directors with the stock ownership
guidelines,  the Committee has established  procedures to minimize the effect of
stock price fluctuations on the deemed value of the individual's  holdings.  All
NEOs, including Mr. Sheffield, are in compliance with the ownership guidelines.

Indemnification Agreements

     The Company has entered into  indemnification  agreements  with each of its
directors and executive officers.  Each  indemnification  agreement requires the
Company to indemnify  each  indemnitee  to the fullest  extent  permitted by the
Delaware  General  Corporation  Law. This means,  among other  things,  that the
Company  must  indemnify  the  director or executive  officer  against  expenses
(including  attorneys'  fees),  judgments,  fines and amounts paid in settlement
that are actually and  reasonably  incurred in an action,  suit or proceeding by
reason of the fact that the person is or was a  director,  officer,  employee or
agent of the  Company or is or was  serving at the  request of the  Company as a
director,  officer,  employee or agent of another corporation or other entity if
the indemnitee  meets the standard of conduct  provided in Delaware law. Also as
permitted under Delaware law, the indemnification agreements require the Company
to advance  expenses in defending  such an action  provided that the director or
executive  officer  undertakes to repay the amounts if the person  ultimately is
determined not to be entitled to indemnification  from the Company.  The Company
will also make the  indemnitee  whole for taxes  imposed on the  indemnification
payments  and for  costs  in any  action  to  establish  indemnitee's  right  to
indemnification, whether or not wholly successful.

                                       26






Tax and Accounting Considerations

     Deductibility of Executive Compensation.  The Omnibus Budget Reconciliation
Act of 1993 placed  restrictions on the deductibility of executive  compensation
paid by public  companies.  Under the  restrictions,  the Company is not able to
deduct  compensation  paid to any of the NEOs in excess of $1,000,000 unless the
compensation  meets  the  definition  of  "performance-based   compensation"  as
required in Section  162(m) of the Internal  Revenue  Code of 1986,  as amended.
Non-deductibility  could  result in  additional  tax costs to the  Company.  The
Company   generally  tries  to  preserve  the  deductibility  of  all  executive
compensation if it can do so without  interfering with the Company's  ability to
attract and retain capable and highly motivated senior management. The Company's
annual  incentive  bonus plan does not meet the definition of  performance-based
compensation  as  required  in  Section  162(m)  primarily  because  the  annual
incentive  bonus  plan is not  formula  driven  and the  Compensation  Committee
retains the right to make  subjective  evaluations of  performance  including an
assessment of how effectively  management adapts to changing industry conditions
and  opportunities  during the Company's  bonus year.  The Company's  restricted
stock  awards do not qualify as  performance-based  compensation  under  Section
162(m). Accordingly,  the portions of compensation paid to the Company's NEOs in
2006 that exceeded  $1,000,000  (other than from the exercise of stock  options)
are generally not deductible.  The Compensation  Committee believes it is in the
best interest of  stockholders  to use  restricted  stock and to continue with a
discretionary element in the annual incentive bonus program.

     Awards under the performance unit award program are designed to qualify for
deductibility  under Section 162(m).  Portions of future restricted stock awards
and annual  incentive  bonus  awards  may not be  deductible.  The  Compensation
Committee  believes  it is  important  to retain its  discretionary  judgment in
evaluating  performance-based  pay and that a portion of the long-term incentive
awards should be in restricted  stock. The  Compensation  Committee has reviewed
the  approximate  amount of the Section  162(m) loss of deduction  and concluded
that it should continue with its current practices.

     Non-qualified Deferred Compensation. On October 22, 2004, the American Jobs
Creation Act of 2004 was signed into law,  changing the tax rules  applicable to
non-qualified  deferred compensation  arrangements.  While the final regulations
have not become  effective  yet,  the Company  believes it is  operating in good
faith compliance with the statutory provisions,  which were effective January 1,
2005.  A more  detailed  discussion  of  the  Company's  non-qualified  deferred
compensation  arrangements  is  provided  above  under the  heading  "Retirement
Plans."

     Accounting for Stock-Based Compensation.  Beginning on January 1, 2006, the
Company began  accounting for  stock-based  payments  including its Stock Option
Program, Long-Term Stock Grant Program, Restricted Stock Program and Stock Award
Program in accordance with the requirements of Statement of Financial Accounting
Standards No. 123 (R) "Share-Based Payment."

                                       27







                         2006 SUMMARY COMPENSATION TABLE

     The  compensation  paid  to  the  Company's  executive  officers  generally
consists of base salaries,  annual  incentive bonus  payments,  awards under the
Company's Long-Term Incentive Plan, contributions to the Company's non-qualified
deferred compensation plan,  contributions to the Company's defined contribution
401(k)  retirement  plan and  miscellaneous  perquisites.  The  following  table
summarizes the total  compensation for 2006 awarded to, earned by or paid to the
named executive officers, the NEOs, comprised of (i) the Company's CEO, (ii) the
Company's Chief Financial  Officer,  and (iii) the three most highly compensated
executive officers other than its CEO and Chief Financial Officer:



 Name and Principal      Year    Salary    Bonus (1)     Stock        Change in        All Other       Total
      Position                     ($)         ($)     Awards (2)   Non-qualified   Compensation        ($)
                                                           ($)         Deferred           (4)
                                                                    Compensation          ($)
                                                                    Earnings (3)
                                                                         ($)
         (a)             (b)       (c)         (d)         (e)           (h)              (i)           (j)
----------------------  -----  ----------  ----------  ----------  -------------  -----------------  ----------
                                                                                
Scott D. Sheffield       2006   $850,000    $850,000   $2,217,217      $14,348         $221,110      $4,152,675
Chairman of the
Board of Directors
and Chief Executive
Officer

Richard P. Dealy         2006   $360,000    $277,200   $  445,132      $34,397         $ 74,660      $1,191,389
Executive Vice
President and Chief
Financial Officer

Chris J. Cheatwood       2006   $340,000    $243,100   $  539,619      $63,992         $ 73,195      $1,259,906
Executive Vice
President, Worldwide
Exploration

Timothy L. Dove          2006   $525,000    $446,250   $  827,427      $46,380         $ 86,429      $1,931,486
President and Chief
Operating Officer

Danny L. Kellum          2006   $340,000    $276,250   $  539,619      $19,199         $ 67,922      $1,242,990
Executive Vice
President, Domestic
Operations


--------------
(1)  Bonus amounts represent  discretionary bonuses earned during 2006 under the
     Company's  annual  incentive  bonus program that were paid during  February
     2007.
(2)  Stock  awards   represent  the  dollar  amount  of   compensation   expense
     attributable  to  restricted  stock and  option  awards  recognized  by the
     Company for  financial  statement  reporting  purposes  for the fiscal year
     ended December 31, 2006, in accordance with SFAS 123(R). The Company valued
     its restricted stock awards based on the market-quoted closing price of the
     Company's  common stock on the last business day prior to the grant date of
     the  awards.  Option  awards  are  valued as of the grant  dates  using the
     Black-Scholes  option  pricing  model.   Additional  detail  regarding  the
     Company's share-based awards is included in Note H of Notes to Consolidated
     Financial   Statements  included  in  "Item  8.  Financial  Statements  and
     Supplementary  Data" in the  Company's  Annual  Report on Form 10-K for the
     year ended December 31, 2006.
(3)  Changes in  non-qualified  deferred  compensation  earnings  represents the
     above-market  earnings that accrued  during 2006 to the accounts of Messrs.
     Sheffield,  Dealy,  Cheatwood,  Dove and Kellum.  Above-market earnings are
     calculated  as  annual  earnings  in excess  of a 5.98%  annual  applicable
     federal rate.


                                       28






(4)  All other  compensation  includes  the Company  contributions  to the NEOs'
     401(k) retirement  accounts and non-qualified  deferred  compensation plan,
     life  insurance  premiums,  income  tax  reimbursement  payments  and other
     perquisites, as shown in the following table:





                                                   Scott D.    Richard P.    Chris J.     Timothy L.    Danny L.
                                                  Sheffield      Dealy       Cheatwood       Dove        Kellum
                                                  ---------    ----------    ---------    ----------    ---------
                                                                                      
       401(k) contributions                      $   22,125    $   22,000    $  22,000    $   22,000    $  22,000
       Non-qualified deferred compensation
       plan contributions                            85,000        36,000       34,000        52,500       34,000
       Life insurance premiums                        5,482           804        1,134         2,622        1,739
       Country club dues                              6,495         4,858        5,651         5,700        2,923
       Spousal travel & entertainment costs (a)      38,955             -        1,175           694        4,590
       Personal travel & entertainment costs (b)      6,084             -            -             -            -
       Financial counseling                           9,150         9,150        9,150           767            -
       Tax reimbursement payments (c)                42,637         1,083           85         2,146        2,370
       Medical exams and other                        5,182           765            -             -          300
                                                 ----------    ----------    ---------    ----------    ---------
                                                 $  221,110    $   74,660    $  73,195    $   86,429    $  67,922
                                                 ==========    ==========    =========    ==========    =========

--------------
(a)  Spousal  travel &  entertainment  costs  represent  the  incremental  costs
     incurred  by the  Company  for travel  and  entertainment  of spouses  when
     accompanying the NEOs on Company related business trips.
(b)  Personal  travel &  entertainment  costs  represent the  incremental  costs
     incurred  by the  Company  for  the  NEO's  personal  use of the  Company's
     aircraft.
(c)  Tax reimbursement  payments represent the actual cost to the Company of tax
     reimbursements made to the NEOs during 2006.



     Two of the Company's  executive  officers,  Mr.  Sheffield and Mr.  Kellum,
directly or indirectly,  hold working interests in wells of which the Company or
a subsidiary is the operator.  These  interests were acquired in 1990 or earlier
with the executive officers' personal funds pursuant to a program offered by the
Company's  predecessor.  As such,  the  holders  participate  in the  costs  and
revenues  attributable  to that working  interest in accordance  with  customary
industry terms.  During 2006, the aggregate amounts of the distributions made to
Messrs. Sheffield and Kellum were $34,920 and $15,365, respectively.

                        2006 GRANTS OF PLAN BASED AWARDS

       The following table sets forth, for each NEO, information about grants of
plan based awards during 2006:



       Name                Grant Date      All Other Stock Awards: Number of      Grant Date Fair Value of Stock and
                                              Shares of Stock or Units (1)                   Option Awards
                                                           (#)                                    ($)
       (a)                     (b)                         (i)                                    (l)
---------------------    --------------    ----------------------------------    -----------------------------------
                                                                                                
Scott D. Sheffield           02/14/2006                                61,000                            $ 2,658,990
Richard P. Dealy             02/14/2006                                13,100                            $   571,029
Chris J. Cheatwood           02/14/2006                                12,000                            $   523,080
Timothy L. Dove              02/14/2006                                24,100                            $ 1,050,519
Danny L. Kellum              02/14/2006                                12,000                            $   523,080


     The 2006 stock awards were issued under the Company's  Long-Term  Incentive
Plan and represent  retention or service  condition  awards.  Plan-based  awards
granted  during 2006  consisted of restricted  stock,  which vests in full three
years after the date of grant,  except as described in "Potential  Payments Upon
Termination or Change in Control."

                                       29






                2006 OUTSTANDING EQUITY AWARDS AT FISCAL YEAR END

     The  following  table sets forth,  for each NEO,  information  about equity
awards outstanding as of December 31, 2006:



                                      Option Awards                           Stock Awards
                     ----------------------------------------   ------------------------------------------
       Name              Number of      Option       Option     Number of     Market Value    Vesting Date
                         Securities    Exercise    Expiration   Shares or      of Shares
                         Underlying      Price       Date (1)    Units of      or Units
                        Unexercised                             Stock that     of Stock
                          Options                                have not      that have
                                                                  Vested     not Vested (2)
                     (#) Exercisable      ($)                       (#)            ($)
       (a)                  (b)           (e)          (f)          (g)            (h)
------------------   ---------------   ---------   ----------   ----------   --------------   ------------
                                                                             
Scott D. Sheffield         40,000       $ 18.96    02/14/2009

                           52,000       $ 17.69    08/14/2009
                           90,000       $ 18.30    02/19/2010
                           60,000       $ 24.72    08/12/2010
                           60,000       $ 24.25    02/18/2011
                           30,000       $ 25.58    08/19/2011
                                                                   49,350     $ 1,958,702      02/16/2007
                                                                   63,000     $ 2,500,470      02/15/2008
                                                                   61,000     $ 2,421,090      02/14/2009

Richard P. Dealy            3,333       $ 12.44    08/23/2007
                            4,166       $  7.88    02/15/2008
                            4,166       $ 12.50    08/16/2008
                            8,333       $ 18.96    02/14/2009
                           14,000       $ 17.69    08/14/2009
                           16,000       $ 18.30    02/19/2010
                           10,500       $ 24.72    08/12/2010
                           10,500       $ 24.25    02/18/2011
                            5,250       $ 25.58    08/19/2011
                                                                    7,560     $   300,056        02/16/2007
                                                                   14,000     $   555,660        02/15/2008
                                                                   13,100     $   519,939        02/14/2009

Chris J.                    7,666       $ 17.69    08/14/2009
Cheatwood                  20,000       $ 18.30    02/19/2010
                           20,000       $ 24.72    08/12/2010
                           20,000       $ 24.25    02/18/2011
                           10,000       $ 25.58    08/19/2011
                                                                   15,750     $   625,118        02/16/2007
                                                                   14,000     $   555,660        02/15/2008
                                                                   12,000     $   476,280        02/14/2009

Timothy L. Dove             7,666       $ 18.96    02/14/2009
                           20,000       $ 17.69    08/14/2009
                           30,000       $ 18.30    02/19/2010
                           20,000       $ 24.72    08/12/2010
                           20,000       $ 24.25    02/18/2011
                           10,000       $ 25.58    08/19/2011
                                                                   16,800     $   666,792        02/16/2007
                                                                   24,000     $   952,560        02/15/2008
                                                                   24,100     $   956,529        02/14/2009

Danny L. Kellum                                                    15,750     $   625,118        02/16/2007
                                                                   14,000     $   555,660        02/15/2008
                                                                   12,000     $   476,280        02/14/2009

--------------
(1)  All  outstanding  option  awards were fully  vested and  exercisable  as of
     December  31,  2006.
(2)  Based on the  closing  price of $39.69  of the  Company's  common  stock on
     December 29, 2006.



                                       30






                     2006 OPTION EXERCISES AND STOCK VESTED

     The following table sets forth, for each NEO,  information about their 2006
option exercises and lapses of restrictions on stock awards:



                               Option Awards                        Stock Awards
                      --------------------------------   --------------------------------
       Name              Number of      Value Realized      Number of      Value Realized
                      Shares Acquired        on          Shares Acquired         on
                        on Exercise      Exercise (1)       on Vesting       Vesting (2)
                            (#)              ($)               (#)               ($)
        (a)                 (b)              (c)               (d)               (e)
-------------------   ---------------   --------------   ---------------   --------------
                                                                 
Scott D. Sheffield                -        $      -             12,000       $  501,000
Richard P. Dealy                  -        $      -              2,100       $   87,675
Chris J. Cheatwood                -        $      -              4,000       $  167,000
Timothy L. Dove                7,667       $  186,340            4,000       $  167,000
Danny L. Kellum                9,999       $  170,279            4,000       $  167,000


--------------
(1)  The value realized per share  acquired is based on the  difference  between
     the closing price of the Company's common stock on the date of exercise and
     the exercise price of the options.
(2)  The value realized per share vested is based on the closing price of $41.75
     of the Company's common stock on August 18, 2006, the date of vesting.



                    2006 NON-QUALIFIED DEFERRED COMPENSATION

     The Company's NEOs participate in a Company-sponsored  defined contribution
401(k)  retirement  plan and a  non-qualified  deferred  compensation  plan. The
following table provides, for each NEO, information about their participation in
the Company's non-qualified deferred compensation plan:



       Name               Executive         Registrant       Aggregate       Aggregate
                      Contributions in   Contributions in   Earnings in   Balance at Last
                           Last FY          Last FY (1)     Last FY (2)       FYE (3)
                             ($)                ($)             ($)             ($)
        (a)                  (b)                (c)             (d)             (f)
-------------------   ----------------   ----------------   -----------   ---------------
                                                                
Scott D. Sheffield        $   85,000        $   85,000       $  73,051      $ 1,224,697
Richard P. Dealy          $   54,000        $   36,000       $  62,944      $   630,327
Chris J. Cheatwood        $   51,000        $   34,000       $  91,257      $   632,201
Timothy L. Dove           $   52,500        $   52,500       $  82,821      $   797,202
Danny L. Kellum           $   34,000        $   34,000       $  48,098      $   599,359


--------------
(1)  Registrant contributions are disclosed in column (i), and also reflected in
     the total compensation disclosed in column (j), of the Summary Compensation
     Table.
(2)  The portion representing  above-market earnings is disclosed in column (h),
     and also  reflected in the total  compensation  disclosed in column (j), of
     the Summary Compensation Table.
(3)  The aggregate  balance of each executive  officer's  plan account  reflects
     above-market  earnings and the  Company's  contributions  also  reported as
     compensation  in columns  (h) and (i),  respectively,  and  included in the
     total  compensation  reported in column  (j),  of the Summary  Compensation
     Table.



                                       31





     The  non-qualified  deferred  compensation  plan allows each participant to
contribute  up to 25 percent of base salary and 100 percent of annual  incentive
bonus payments.  The Company provides a matching  contribution of 100 percent of
the participant's contribution limited to the first ten percent of the executive
officer's base salary.  The Company's  matching  contribution vests immediately.
The non-qualified  deferred  compensation plan permits each executive officer to
make investment allocation choices for both the executive officer's contribution
and the Company match to designated mutual funds or to a self-directed brokerage
account  offered  as  investment   options  under  the  non-qualified   deferred
compensation  plan. The Company  retains the right to maintain these  investment
choices as  hypothetical  investments  or to  actually  invest in the  executive
officer's investment choices. To date, the Company has chosen to actually invest
the funds in the investment  options selected by the executive  officers so that
the investment  returns are funded,  but such funds remain assets subject to the
claims of the Company's general  creditors.  An executive is permitted to change
their investment choices at anytime.

     Participants  may choose to receive a distribution of their vested benefits
from the non-qualified compensation plan as soon as administratively practicable
(i) after the date of  separation  from  service  with the Company or (ii) after
January 1 of the year  following  the date of  separation  from service with the
Company. A participant's  vested benefits may, at the option of the participant,
be  distributed  in one lump sum, in five annual  installments  or in ten annual
installments.

            POTENTIAL PAYMENTS UPON TERMINATION OR CHANGE IN CONTROL

     The  Company  is  party to  severance  agreements  and  change  in  control
agreements  with its  executive  officers.  The forms of severance and change in
control  agreements were previously  filed as exhibits to the Company's  Current
Report on Form 8-K filed with the SEC on August 17,  2005.  Salaries  and annual
incentive  bonuses are set by the  Compensation  Committee  independent of these
agreements and the Compensation Committee can increase or decrease base salaries
at its discretion.

     The  severance   agreements  provide  that,  if  the  executive  terminates
employment for good reason (which  generally  includes a demotion or significant
pay reduction,  and for Mr. Sheffield also includes his not being reelected as a
director) or if an executive  officer's  employment with the Company  terminates
other than for cause, death,  disability or normal retirement,  the Company must
pay the executive officer a separation  payment in addition to earned salary and
vested benefits. The separation payment is an amount equal to the sum of (1) one
times the  executive  officer's  base  salary  (three  times base salary for Mr.
Sheffield and 2.5 times base salary in the case of Mr.  Dove),  (2) 18 times the
monthly  executive  officer's  cost to  continue  coverage  for  himself and his
eligible  dependents  under  the  Company's  group  medical  plans (36 times the
monthly cost in the case of Mr.  Sheffield  and 30 times the monthly cost in the
case of Mr. Dove), and (3) one-twelfth of the executive officer's base salary if
the date of termination is less than 30 days following the notice of termination
and the executive officer's employment is terminated by the Company. In the case
of Messrs.  Sheffield and Dove,  the severance  agreements  also provide for the
immediate vesting of certain awards under the Company's 1997 Long-Term Incentive
Plan.  The  severance  agreements  terminate  upon a change  in  control  of the
Company.

     The change in control  agreements  provide that,  if the executive  officer
terminates  employment  for good  reason  (which  generally  includes an adverse
change in duties or a reduction in base salary,  target annual  incentive bonus,
equity  awards or  benefits) or if an executive  officer's  employment  with the
Company terminates other than for cause, death, disability or normal retirement,
in either case in connection with or after a change in control, the Company must
pay the  executive  officer a  separation  payment and provide  continued  group
medical  coverage at a cost  equivalent to a similarly  situated active employee
for approximately three years (in the case of Messrs.  Sheffield and Dove, until
the date  the  executive  is  eligible  for  full  medical  benefits  under  the
provisions  of  Medicare),  in  addition  to paying  earned  salary  and  vested
benefits.  In addition,  all the executive  officer's awards under the Company's
1997 Long-Term  Incentive  Plan will fully vest.  The  separation  payment is an
amount  equal to the sum of (1) 2.99  times the sum of the  executive  officer's
base salary and a defined target bonus  determined in accordance  with the terms
of each agreement,  (2) a pro-rated portion of the defined target bonus based on
the days elapsed in that calendar  year,  and (3)  one-twelfth  of the executive


                                       32





officer's  base salary if the date of termination is less than 30 days following
the notice of termination and the executive  officer's  employment is terminated
by the Company.  If the Company  terminates an executive  officer  without cause
following a potential  change in control (as defined in the agreements) and if a
change in  control  occurs  within 12  months,  the  executive  officer  will be
entitled upon the change in control to the payments that would have been made if
the executive had continued as an executive officer until the change in control,
as  well  as to a  payment  equal  to  the  value  of  the  executive  officer's
equity-based  awards that did not vest when his employment was  terminated.  If,
after a change in control, an executive officer terminates employment because he
is required to relocate  more than 50 miles,  but is not  otherwise  entitled to
terminate  employment  for good reason,  then the Company must pay the executive
officer a reduced  separation  payment equal to his annualized  base salary,  in
addition to earned salary and vested benefits,  and provide  continued  coverage
for one year under group medical benefit plans. The change in control agreements
also obligate the Company to make the executive officers whole (that is, provide
a "gross-up")  for excise taxes that may be imposed on payments under the change
in control  agreements by Section 4999 of the Internal  Revenue Code. The change
in control agreements  continue for two years following a change in control that
occurs during the term of the agreement.

     Both the severance  agreements and the change in control agreements provide
for a payment of one times the executive  officer's  base salary in the event of
his death, disability or retirement.  All payments, other than continued medical
benefits, received under both the severance agreements and the change in control
agreements are distributed as a lump sum.

                                       33







     Scott D. Sheffield. The following table shows, as of December 31, 2006, the
estimated  potential  payments  and  benefits  that  would  be  received  by Mr.
Sheffield upon the  termination  of his employment in each of the  circumstances
indicated in the table.



 Benefits and
   Payments                                                                                                         Change in
     Upon           Voluntary     Termination    Termination   Termination for      Normal                           Control
Termination (1)    Termination   Not for Cause    for Cause      Good Reason      Retirement    Death/Disability   Termination
----------------   -----------   -------------   -----------   ---------------   ------------   ----------------   -----------
                                                                                              
Long-Term
Incentive
Compensation:

Restricted Stock
             (2)     $    -       $  6,880,262     $     -      $  6,880,262     $  4,089,578     $  4,089,578     $ 6,880,262

Benefits &
Perquisites:

       Severance
         Payment     $    -       $  2,550,000     $     -      $  2,550,000     $    850,000     $    850,000     $ 4,983,333

  Prorated Bonus
     Payment (3)     $    -       $    850,000     $     -      $    850,000     $    850,000     $    850,000     $   816,667

 Medical Benefit
    Continuation     $    -       $     31,175     $     -      $     31,175     $         -      $         -      $   270,047

            280G
   Reimbursement     $    -       $          -     $     -      $         -      $         -      $         -      $        -

  Pay in lieu of$
   30-day Notice
             (4)     $    -             70,833     $     -      $         -      $         -      $         -      $    70,833

 Unused Vacation
             (5)     $    -       $          -     $     -      $         -      $         -      $         -      $        -
                     ---------    ------------   -----------   -------------     ------------     ------------     -----------
            Total    $    -       $ 10,382,270     $     -      $ 10,311,437     $  5,789,578     $  5,789,578     $13,021,142
                     =========    ============   ===========   =============     ============     ============     ===========

--------------
(1)  The benefits and payments  quantified in the table do not  contemplate  the
     payments that the Company is obligated to make to the executive officer (i)
     if the Company  terminates the executive  officer without cause following a
     potential change in control and a change in control occurs within 12 months
     following  the  termination,  or (ii) if the executive  officer  terminates
     employment following a change in control because he is required to relocate
     more than 50 miles, in both cases as described in the summary of the change
     in control  agreements  set forth  above.  Additionally,  the  benefits and
     payments  quantified  herein have been  determined as of December 31, 2006,
     and  therefore do not  contemplate  the effect on the  long-term  incentive
     compensation and 280G reimbursement  components  resulting from the vesting
     in  February  2007 of 49,350  shares of  restricted  stock and the grant in
     February 2007 of 34,997 shares of restricted  stock and 34,998  performance
     units.
(2)  Unvested  restricted stock awards  automatically vest in full upon a change
     in control,  regardless of whether  employment is subsequently  terminated.
     Unvested  restricted  stock awards also  automatically  vest in full upon a
     Termination Not for Cause or a Termination for Good Reason.  In the case of
     Normal Retirement, Death or Disability, vesting of the award is accelerated
     pro rata to the end of the month of termination.  On February 26, 2007, the
     Compensation  Committee  amended  the  terms  of  the  executive  officer's
     February  2006  restricted  stock grant to provide for pro rata  vesting in
     certain termination events under which the restricted stock would have been
     forfeited under the original  terms. In quantifying the potential  payments
     upon  termination,  the table assumes that these more favorable  provisions
     were in effect as of December 31, 2006.
(3)  Other than in connection with a Change in Control Termination, payment of a
     bonus is subject to Compensation  Committee discretion.  This table assumes
     the Compensation Committee chose to make the payments indicated.
(4)  This amount is payable only if  employment is terminated by the Company and
     the date of  termination  is less than 30 days  after the date of notice of
     termination.
(5)  This amount  equals the  difference in value between the vacation time that
     was accrued and the vacation time that had been used during the year to the
     date of termination.



                                       34






     Richard P. Dealy.  The following  table shows, as of December 31, 2006, the
estimated  potential  payments and benefits  that would be received by Mr. Dealy
upon the termination of his employment in each of the circumstances indicated in
the table.



 Benefits and
   Payments                                                      Termination                                       Change in
     Upon           Voluntary     Termination    Termination       for Good        Normal                           Control
Termination (1)    Termination   Not for Cause    for Cause         Reason       Retirement    Death/Disability   Termination
----------------   -----------   -------------   -----------   ---------------   ------------   ----------------   -----------
                                                                                              
Long-Term
Incentive
Compensation:

Restricted Stock
             (2)     $    -       $    775,860     $     -      $         -      $    775,860     $    775,860     $ 1,375,655

Benefits &
Perquisites:

       Severance
         Payment     $    -       $    360,000     $     -      $    360,000     $    360,000     $    360,000     $ 1,620,580

  Prorated Bonus
     Payment (3)     $    -       $    252,000     $     -      $    252,000     $    252,000     $    252,000     $   182,000

 Medical Benefit
    Continuation     $    -       $     22,069     $     -      $     22,069     $         -      $         -      $    39,529

            280G
   Reimbursement     $    -       $          -     $     -      $         -      $         -      $         -      $        -

  Pay in lieu of$
   30-day Notice
             (4)     $    -             30,000     $     -      $         -      $         -      $         -      $    30,000

 Unused Vacation
             (5)     $  11,769    $     11,769     $  11,769    $     11,769     $     11,769     $     11,769     $    11,769
                     ---------    ------------   -----------   -------------     ------------     ------------     -----------
            Total    $  11,769    $  1,451,698     $  11,769    $    645,838     $  1,399,629     $  1,399,629     $ 3,259,533
                     =========    ============   ===========   =============     ============     ============     ===========

--------------
(1)  The benefits and payments  quantified in the table do not  contemplate  the
     payments that the Company is obligated to make to the executive officer (i)
     if the Company  terminates the executive  officer without cause following a
     potential change in control and a change in control occurs within 12 months
     following  the  termination,  or (ii) if the executive  officer  terminates
     employment following a change in control because he is required to relocate
     more than 50 miles, in both cases as described in the summary of the change
     in control  agreements  set forth  above.  Additionally,  the  benefits and
     payments  quantified  herein have been  determined as of December 31, 2006,
     and  therefore do not  contemplate  the effect on the  long-term  incentive
     compensation and 280G reimbursement  components  resulting from the vesting
     in  February  2007 of 7,560  shares  of  restricted  stock and the grant in
     February 2007 of 11,082 shares of restricted  stock and 11,083  performance
     units.
(2)  Unvested  restricted stock awards  automatically vest in full upon a change
     in control, regardless of whether employment is subsequently terminated. In
     the case of a Termination Not for Cause, a Termination for Good Reason,  or
     Normal Retirement, Death or Disability, vesting of the award is accelerated
     pro rata to the end of the month of termination.  On February 26, 2007, the
     Compensation  Committee  amended  the  terms  of  the  executive  officer's
     February  2006  restricted  stock grant to provide for pro rata  vesting in
     certain termination events under which the restricted stock would have been
     forfeited under the original  terms. In quantifying the potential  payments
     upon  termination,  the table assumes that these more favorable  provisions
     were in effect as of December 31, 2006.
(3)  Other than in connection with a Change in Control Termination, payment of a
     bonus is subject to Compensation  Committee discretion.  This table assumes
     the Compensation Committee chose to make the payments indicated.
(4)  This amount is payable only if  employment is terminated by the Company and
     the date of  termination  is less than 30 days  after the date of notice of
     termination.
(5)  This amount  equals the  difference in value between the vacation time that
     was accrued and the vacation time that had been used during the year to the
     date of termination.



                                       35





     Chris J. Cheatwood. The following table shows, as of December 31, 2006, the
estimated  potential  payments  and  benefits  that  would  be  received  by Mr.
Cheatwood upon the  termination  of his employment in each of the  circumstances
indicated in the table.



 Benefits and
   Payments                                                      Termination                                       Change in
     Upon           Voluntary     Termination    Termination       for Good        Normal                           Control
Termination (1)    Termination   Not for Cause    for Cause         Reason       Retirement    Death/Disability   Termination
----------------   -----------   -------------   -----------   ---------------   ------------   ----------------   -----------
                                                                                              
Long-Term
Incentive
Compensation:

Restricted Stock
             (2)     $    -       $  1,070,201     $     -      $         -      $  1,070,201     $  1,070,201     $ 1,657,058

Benefits &
Perquisites:

       Severance
         Payment     $    -       $    340,000     $     -      $    340,000     $    340,000     $    340,000     $ 1,639,018

  Prorated Bonus
     Payment (3)     $    -       $    221,000     $     -      $    221,000     $    221,000     $    221,000     $   208,167

 Medical Benefit
    Continuation     $    -       $     22,459     $     -      $     22,459     $         -      $         -      $    39,851

            280G
   Reimbursement     $    -       $          -     $     -      $         -      $         -      $         -      $        -

  Pay in lieu of$
   30-day Notice
             (4)     $    -             28,333     $     -      $         -      $         -      $         -      $    28,333

 Unused Vacation
             (5)     $   6,578    $      6,578     $   6,578    $      6,578     $      6,578     $      6,578     $     6,578
                     ---------    ------------   -----------   -------------     ------------     ------------     -----------
            Total    $   6,578    $  1,688,571     $   6,578    $    590,037     $  1,637,779     $  1,637,779     $ 3,579,005
                     =========    ============   ===========   =============     ============     ============     ===========

--------------
(1)  The benefits and payments  quantified in the table do not  contemplate  the
     payments that the Company is obligated to make to the executive officer (i)
     if the Company  terminates the executive  officer without cause following a
     potential change in control and a change in control occurs within 12 months
     following  the  termination,  or (ii) if the executive  officer  terminates
     employment following a change in control because he is required to relocate
     more than 50 miles, in both cases as described in the summary of the change
     in control  agreements  set forth  above.  Additionally,  the  benefits and
     payments  quantified  herein have been  determined as of December 31, 2006,
     and  therefore do not  contemplate  the effect on the  long-term  incentive
     compensation and 280G reimbursement  components  resulting from the vesting
     in  February  2007 of 15,750  shares of  restricted  stock and the grant in
     February  2007 of 8,166 shares of  restricted  stock and 8,166  performance
     units.
(2)  Unvested  restricted stock awards  automatically vest in full upon a change
     in control, regardless of whether employment is subsequently terminated. In
     the case of a Termination Not for Cause, a Termination for Good Reason,  or
     Normal Retirement, Death or Disability, vesting of the award is accelerated
     pro rata to the end of the month of termination.  On February 26, 2007, the
     Compensation  Committee  amended  the  terms  of  the  executive  officer's
     February  2006  restricted  stock grant to provide for pro rata  vesting in
     certain termination events under which the restricted stock would have been
     forfeited under the original  terms. In quantifying the potential  payments
     upon  termination,  the table assumes that these more favorable  provisions
     were in effect as of December 31, 2006.
(3)  Other than in connection with a Change in Control Termination, payment of a
     bonus is subject to Compensation  Committee discretion.  This table assumes
     the Compensation Committee chose to make the payments indicated.
(4)  This amount is payable only if  employment is terminated by the Company and
     the date of  termination  is less than 30 days  after the date of notice of
     termination.
(5)  This amount  equals the  difference in value between the vacation time that
     was accrued and the vacation time that had been used during the year to the
     date of termination.



                                       36






     Timothy L. Dove.  The following  table shows,  as of December 31, 2006, the
estimated  potential  payments and  benefits  that would be received by Mr. Dove
upon the termination of his employment in each of the circumstances indicated in
the table.



 Benefits and
   Payments                                                      Termination                                       Change in
     Upon           Voluntary     Termination    Termination       for Good        Normal                           Control
Termination (1)    Termination   Not for Cause    for Cause         Reason       Retirement    Death/Disability   Termination
----------------   -----------   -------------   -----------   ---------------   ------------   ----------------   -----------
                                                                                              
Long-Term
Incentive
Compensation:

Restricted Stock
             (2)     $    -       $  2,575,881     $     -      $  2,575,881     $  1,492,820     $  1,492,820     $ 2,575,881

Benefits &
Perquisites:

       Severance
         Payment     $    -       $  1,312,500     $     -      $  1,312,500     $    525,000     $    525,000     $ 2,696,482

  Prorated Bonus
     Payment (3)     $    -       $    446,250     $     -      $    446,250     $    446,250     $    446,250     $   376,833

 Medical Benefit
    Continuation     $    -       $     39,023     $     -      $     39,023     $         -      $         -      $   498,230

            280G
   Reimbursement     $    -       $          -     $     -      $         -      $         -      $         -      $        -

  Pay in lieu of$
   30-day Notice
             (4)     $    -             43,750     $     -      $         -      $         -      $         -      $    43,750

 Unused Vacation
             (5)     $  18,678    $     18,678     $  18,678    $     18,678     $     18,678     $     18,678     $    18,678
                     ---------    ------------   -----------   -------------     ------------     ------------     -----------
            Total    $  18,678    $  4,436,082     $  18,678    $  4,392,332     $  2,482,748     $  2,482,748     $ 6,209,854
                     =========    ============   ===========   =============     ============     ============     ===========

--------------
(1)  The benefits and payments  quantified in the table do not  contemplate  the
     payments that the Company is obligated to make to the executive officer (i)
     if the Company  terminates the executive  officer without cause following a
     potential change in control and a change in control occurs within 12 months
     following  the  termination,  or (ii) if the executive  officer  terminates
     employment following a change in control because he is required to relocate
     more than 50 miles, in both cases as described in the summary of the change
     in control  agreements  set forth  above.  Additionally,  the  benefits and
     payments  quantified  herein have been  determined as of December 31, 2006,
     and  therefore do not  contemplate  the effect on the  long-term  incentive
     compensation and 280G reimbursement  components  resulting from the vesting
     in  February  2007 of 16,800  shares of  restricted  stock and the grant in
     February 2007 of 15,166 shares of restricted  stock and 15,166  performance
     units.
(2)  Unvested  restricted stock awards  automatically vest in full upon a change
     in control,  regardless of whether  employment is subsequently  terminated.
     Unvested  restricted  stock awards also  automatically  vest in full upon a
     Termination Not for Cause or a Termination for Good Reason.  In the case of
     Normal Retirement, Death or Disability, vesting of the award is accelerated
     pro rata to the end of the month of termination.  On February 26, 2007, the
     Compensation  Committee  amended  the  terms  of  the  executive  officer's
     February  2006  restricted  stock grant to provide for pro rata  vesting in
     certain termination events under which the restricted stock would have been
     forfeited under the original  terms. In quantifying the potential  payments
     upon  termination,  the table assumes that these more favorable  provisions
     were in effect as of December 31, 2006.
(3)  Other than in connection with a Change in Control Termination, payment of a
     bonus is subject to Compensation  Committee discretion.  This table assumes
     the Compensation Committee chose to make the payments indicated.
(4)  This amount is payable only if  employment is terminated by the Company and
     the date of  termination  is less than 30 days  after the date of notice of
     termination.
(5)  This amount  equals the  difference in value between the vacation time that
     was accrued and the vacation time that had been used during the year to the
     date of termination.



                                       37





     Danny L. Kellum.  The following  table shows,  as of December 31, 2006, the
estimated  potential  payments and benefits that would be received by Mr. Kellum
upon the termination of his employment in each of the circumstances indicated in
the table.



 Benefits and
   Payments                                                      Termination                                       Change in
     Upon           Voluntary     Termination    Termination       for Good        Normal                           Control
Termination (1)    Termination   Not for Cause    for Cause         Reason       Retirement    Death/Disability   Termination
----------------   -----------   -------------   -----------   ---------------   ------------   ----------------   -----------
                                                                                              
Long-Term
Incentive
Compensation:

Restricted Stock
             (2)     $    -       $  1,070,201     $     -      $         -      $  1,070,201     $  1,070,201     $ 1,657,058

Benefits &
Perquisites:

       Severance
         Payment     $    -       $    340,000     $     -      $    340,000     $    340,000     $    340,000     $ 1,639,018

  Prorated Bonus
     Payment (3)     $    -       $    221,000     $     -      $    221,000     $    221,000     $    221,000     $   208,167

 Medical Benefit
    Continuation     $    -       $     15,812     $     -      $     15,812     $         -      $         -      $    27,309

            280G
   Reimbursement     $    -       $          -     $     -      $         -      $         -      $         -      $        -

  Pay in lieu of$
   30-day Notice
             (4)     $    -             28,333     $     -      $         -      $         -      $         -      $    28,333

 Unused Vacation
             (5)     $  14,875    $     14,875     $  14,875    $     14,875     $     14,875     $     14,875     $    14,875
                     ---------    ------------   -----------   -------------     ------------     ------------     -----------
            Total    $  14,875    $  1,690,221     $  14,875    $    591,687     $  1,646,076     $  1,646,076     $ 3,574,760
                     =========    ============   ===========   =============     ============     ============     ===========

--------------
(1)  The benefits and payments  quantified in the table do not  contemplate  the
     payments that the Company is obligated to make to the executive officer (i)
     if the Company  terminates the executive  officer without cause following a
     potential change in control and a change in control occurs within 12 months
     following  the  termination,  or (ii) if the executive  officer  terminates
     employment following a change in control because he is required to relocate
     more than 50 miles, in both cases as described in the summary of the change
     in control  agreements  set forth  above.  Additionally,  the  benefits and
     payments  quantified  herein have been  determined as of December 31, 2006,
     and  therefore do not  contemplate  the effect on the  long-term  incentive
     compensation and 280G reimbursement  components  resulting from the vesting
     in  February  2007 of 15,750  shares of  restricted  stock and the grant in
     February  2007 of 8,166 shares of  restricted  stock and 8,166  performance
     units.
(2)  Unvested  restricted stock awards  automatically vest in full upon a change
     in control, regardless of whether employment is subsequently terminated. In
     the case of a Termination Not for Cause, a Termination for Good Reason,  or
     Normal Retirement, Death or Disability, vesting of the award is accelerated
     pro rata to the end of the month of termination.  On February 26, 2007, the
     Compensation  Committee  amended  the  terms  of  the  executive  officer's
     February  2006  restricted  stock grant to provide for pro rata  vesting in
     certain termination events under which the restricted stock would have been
     forfeited under the original  terms. In quantifying the potential  payments
     upon  termination,  the table assumes that these more favorable  provisions
     were in effect as of December 31, 2006.
(3)  Other than in connection with a Change in Control Termination, payment of a
     bonus is subject to Compensation  Committee discretion.  This table assumes
     the Compensation Committee chose to make the payments indicated.
(4)  This amount is payable only if  employment is terminated by the Company and
     the date of  termination  is less than 30 days  after the date of notice of
     termination.
(5)  This amount  equals the  difference in value between the vacation time that
     was accrued and the vacation time that had been used during the year to the
     date of termination.



                                       38





                COMPENSATION AND MANAGEMENT DEVELOPMENT COMMITTEE
                      INTERLOCKS AND INSIDER PARTICIPATION

     During 2006, no member of the Compensation Committee served as an executive
officer  of the  Company.  During  2006,  there were no  Compensation  Committee
interlocks with other companies.

            COMPENSATION AND MANAGEMENT DEVELOPMENT COMMITTEE REPORT

     The information  contained in this Compensation and Management  Development
Committee  Report  shall  not be  deemed to be  "soliciting  material"  or to be
"filed" with the SEC, nor shall such  information be  incorporated  by reference
into any  future  filing  under  the  Securities  Act of 1933 or the  Securities
Exchange  Act of  1934,  except  to the  extent  that the  Company  specifically
incorporates such information.

     The  Compensation  Committee of the Company has reviewed and  discussed the
Compensation  Discussion and Analysis  required by Item 402(b) of Regulation S-K
with  management  and, based on such review and  discussions,  the  Compensation
Committee recommended to the Board of Directors that the Compensation Discussion
and Analysis be included in this Proxy Statement.

Compensation and Management Development Committee of
The Board of Directors

Edison C. Buchanan, Chairman
James R. Baroffio, Member
Andrew D. Lundquist, Member
Charles E. Ramsey, Jr., Member

                             AUDIT COMMITTEE REPORT

     The information  contained in this Audit Committee Report and references in
this Proxy Statement to the  independence  of the Audit Committee  members shall
not be deemed to be  "soliciting  material"  or to be "filed"  with the SEC, nor
shall such information be incorporated by reference into any future filing under
the Securities Act of 1933 or the Securities Exchange Act of 1934, except to the
extent that the Company specifically  incorporates such information by reference
in such filing.

     The Audit  Committee's  purpose is to assist the Board of  Directors in its
oversight of the Company's internal controls, financial statements and the audit
process. The Board of Directors,  in its business judgment,  has determined that
all members of the Audit Committee are independent as required under the listing
standards of the NYSE.

     Management is responsible for the  preparation,  presentation and integrity
of the  Company's  financial  statements,  accounting  and  financial  reporting
principles,  and internal controls and procedures  designed to assure compliance
with accounting  standards and applicable laws and regulations.  The independent
auditors, Ernst & Young LLP, are responsible for performing an independent audit
of the consolidated  financial  statements in accordance with generally accepted
auditing  standards and for auditing  management's  assessment  that the Company
maintains effective internal controls over financial reporting.  While the Audit
Committee  has the  responsibilities  and  powers set forth in its  charter  and
management and the  independent  auditors for the Company are accountable to the
Audit  Committee,  it is not the duty of the Audit  Committee to plan or conduct
audits or to determine that the Company's  consolidated financial statements are
complete and accurate and are in accordance with generally  accepted  accounting
principles.

     In performing  its  oversight  role,  the Audit  Committee has reviewed and
discussed the audited  financial  statements with management and the independent
auditors.  The Audit Committee has also discussed with the independent  auditors
the matters required to be discussed by Statement on Auditing  Standards No. 61,
Communication with Audit Committees, as currently in effect. The Audit Committee
has  received  the  written  disclosures  and the  letter  from the  independent

                                       39






auditors  required by Independence  Standards Board Standard No. 1,  Independent
Discussions with Audit Committees,  as currently in effect.  The Audit Committee
has also considered  whether the performance of other non-audit  services by the
independent  auditors is compatible with maintaining the auditors'  independence
and has discussed with the auditors the auditors' independence.

     Based on the  reports and  discussions  described  in this Audit  Committee
Report, and subject to the limitations on the roles and  responsibilities of the
Audit  Committee  referred  to below and in the  charter,  the  Audit  Committee
recommended to the Board of Directors that the audited  financial  statements be
included in the Annual Report on Form 10-K for the year ended December 31, 2006,
for filing with the SEC. The Audit Committee has also selected Ernst & Young LLP
as the Company's independent auditors for 2007.

     Although  determined  to be  financially  literate  (as  defined by the SEC
rules), the members of the Audit Committee are not professionally engaged in the
practice  of  auditing  or  accounting  for the  Company  and are not experts in
auditor  independence  standards or legal or regulatory matters.  Members of the
Audit  Committee  rely,  without  independent  verification,  on the information
provided  to  them  and  on the  representations  made  by  management  and  the
independent  auditors.  Accordingly,  the Audit  Committee's  oversight does not
provide  an  independent  basis to  determine  that  management  has  maintained
appropriate   accounting  and  financial  reporting  principles  or  appropriate
internal  controls and procedures  designed to assure compliance with accounting
standards  and  applicable  laws  and   regulations.   Furthermore,   the  Audit
Committee's  considerations and discussions referred to above do not assure that
the  audit  of the  Company's  financial  statements  has  been  carried  out in
accordance  with  generally  accepted  auditing  standards,  that the  financial
statements  are  presented in  accordance  with  generally  accepted  accounting
principles or that Ernst & Young LLP is in fact independent.

Audit Committee of
The Board of Directors

R. Hartwell Gardner, Chairman
Linda K. Lawson, Member
Frank A. Risch, Member
Robert A. Solberg, Member
Jim A. Watson, Member



                                       40








                              CORPORATE GOVERNANCE

Corporate Governance Guidelines

     The  Board of  Directors  believes  that  sound  governance  practices  and
policies  provide an important  framework to assist it in fulfilling its duty to
stockholders.  The Company's  Corporate  Governance  Guidelines,  as amended and
restated  by the Board of  Directors  in  November  2006,  cover  the  following
principal subjects:

         o   Role and functions of the Board of Directors and its Lead Director
         o   Qualifications and independence of directors
         o   Size of the Board of Directors and director selection process
         o   Committee functions and independence of committee members
         o   Meetings of non-employee directors
         o   Self-evaluation
         o   Ethics and  conflicts of  interest (a copy of the current  "Code of
             Business  Conduct and Ethics" is posted on the Company's website at
             www.pxd.com)
         o   Reporting  of  concerns to  non-employee  directors  or  the  Audit
             Committee
         o   Compensation  of  the  Board  of  Directors   and  stock  ownership
             requirements
         o   Succession  planning  and  annual  compensation  review  of  senior
             management
         o   Access to senior management and to independent advisors
         o   New director orientation
         o   Continuing education
         o Related person transactions

     The "Corporate  Governance  Guidelines" are posted on the Company's website
at www.pxd.com/governance.  The Corporate Governance Guidelines will be reviewed
periodically  and  as  necessary  by  the  Company's  Nominating  and  Corporate
Governance  Committee,  and  any  proposed  additions  to or  amendments  of the
Corporate Governance  Guidelines will be presented to the Board of Directors for
its approval.

     The  NYSE  has  adopted  rules  that  require  listed  companies  to  adopt
governance  guidelines  covering certain matters.  The Company believes that the
Corporate Governance Guidelines comply with the NYSE rules.

Director Independence

     The Company's standards for determining  director  independence require the
assessment of directors' independence each year. A director cannot be considered
independent  unless the Board of Directors  affirmatively  determines that he or
she does not have any  relationship  with  management  or the  Company  that may
interfere with the exercise of his or her independent judgment, including any of
the  relationships  that would  disqualify  the director from being  independent
under the rules of the NYSE.  As  contemplated  by the NYSE rules,  the Board of
Directors  has also  adopted  categorical  standards  to assist  in  determining
whether any material  relationship  with the Company or its  management  exists.
Directors  who  have  any  of the  relationships  outlined  in  the  categorical
standards  are  considered  to have  relationships  that  require  the  Board of
Directors'  review of the full  facts and  circumstances  in order to  determine
whether  the  relationship  impairs  the  independence  of  the  director.   The
categorical standards are as follows:

1.   the director has no material relationship with the Company, either directly
     or as a  partner,  shareholder  or officer  of an  organization  that has a
     relationship with the Company;
2.   the director, or any member of the director's family, has not been employed
     by the Company in the last three years;
3.   the director, or any member of the director's family, has not been employed
     by, or affiliated with, the Company's auditor in the last three years;

                                       41






4.   the director,  or any member of the director's family, has not been part of
     an interlocking directorate in the last three years;
5.   the  director,  or any member of the  director's  family,  has not received
     non-director fee compensation from the Company in the last three years;
6.   the director is not an executive officer or employee,  and no member of the
     director's family is an executive officer, of a company that makes payments
     to, or receives  payments  from the Company for  property or services in an
     amount which, in any single fiscal year,  exceeds the greater of $1 million
     or two percent of such other company's  consolidated  gross revenues in the
     last three years;
7.   the director does not own more than 4.9 percent of the Company's shares;
8.   the director does not serve on more than three other public company boards;
     and
9.   the director does not serve on the board of another oil and gas exploration
     and production company.

     In May 2006,  the Board of  Directors  assessed  the  independence  of each
non-employee  director  under  the  Company's  guidelines  and the  independence
standards of the NYSE. The Board of Directors affirmatively  determined that all
ten  non-employee  directors (Dr.  Baroffio,  Mr.  Buchanan,  Mr. Gardner,  Mrs.
Lawson,  Mr. Lundquist,  Mr. Ramsey,  Mr. Risch, Mr. Sexton, Mr. Solberg and Mr.
Watson) are independent.

     The  Board  of  Directors  reviewed  the  facts  and  circumstances  of Mr.
Lundquist's  and Mr.  Sexton's  interests in the Company's  2004  acquisition of
Evergreen  Resources,  Inc.  ("Evergreen"),   of  which  Mr.  Lundquist  was  an
independent director and Mr. Sexton was the Chairman of the Board, President and
Chief Executive  Officer,  as well as Mr. Sexton's  payments under his change in
control  agreement  with  Evergreen and his  non-competition  agreement with the
Company. The Board of Directors concluded that Mr. Lundquist's economic interest
in the Evergreen  transaction  was limited to his holdings as a security  holder
and that his prior activities as an independent  director of Evergreen would not
impair his  independence  as a director of the  Company.  The Board of Directors
similarly  concluded  that Mr.  Sexton is an  independent  director  because Mr.
Sexton ceased to be an employee of Evergreen at the time of the merger,  because
his economic interest in that transaction existed as an employee and stockholder
of  Evergreen  (both of which  ceased at the  merger or upon  settlement  of the
dispute  relating to the amount of change in control payments due him because of
the merger),  and because the payment for his new non-competition  agreement and
his  continuation  of health  care and other  insurance  benefits  for two years
following  the merger did not  constitute  payment  for  services to the Company
since it was not contingent on continuing service.

     In connection with its assessment of the independence of each  non-employee
director,  the Board of Directors also  determined that each member of the Audit
Committee  meets  the  additional  independence  standards  of the  NYSE and SEC
applicable to members of the Audit Committee.  Those standards  require that the
director  not be an  affiliate  of the Company and that the director not receive
from the Company,  directly or  indirectly,  any  consulting,  advisory or other
compensatory fees except for fees for services as a director.

Election of Lead Director

     In May 2006, the Board of Directors  reelected Mr.  Ramsey,  a non-employee
director,  to serve as the Lead Director.  In this capacity Mr. Ramsey provides,
in  conjunction  with the  Chairman,  leadership  and  guidance  to the Board of
Directors.  He also (i) serves as chairman of the regular executive  sessions of
the independent directors; (ii) in consultation with the Chairman and Secretary,
establishes  the agenda for each meeting of the Board of Directors,  taking into
account  suggestions  of other  directors;  and  (iii)  serves  as the  Board of
Directors' contact for direct employee and stockholder  communications  with the
Board of Directors.

Financial Literacy of Audit Committee and Designation of Financial Experts

     In May 2006,  the Board of  Directors  evaluated  the  members of the Audit
Committee for financial  literacy and the attributes of a financial expert.  The
Board of  Directors  determined  that each of the  Audit  Committee  members  is
financially  literate and that three of the Audit Committee members (Mrs. Lawson
and Messrs. Gardner and Risch) are financial experts as defined by the SEC.

                                       42






Attendance at Annual Meetings

     The Board of  Directors  encourages  all  directors  to attend  the  annual
meetings of stockholders, if practicable. All of the directors attended the 2006
Annual Meeting of Stockholders held on May 3, 2006.

Procedure for Directly Contacting the Board of Directors and Whistleblower
Policy

     A means for interested parties to contact the Board of Directors (including
the  Lead  Director)  directly  has been  established  and is  published  on the
Company's  website at  www.pxd.com.  Matters for which this  contact may be used
include  allegations about actions of the Company or its directors,  officers or
employees involving (i) questionable accounting,  internal controls and auditing
matters;  (ii)  materially  misleading  statements  or omissions in SEC reports,
press  releases,  or other  public  statements  or other forms of wire,  mail or
securities fraud or (iii) dishonest or unethical conduct, conflicts of interest,
violations of the Company's Code of Business  Conduct and Ethics or violation of
laws.  All  complaints  and  concerns  will be  received  and  processed  by the
Company's  Corporate  Secretary's  Office.  Complaints relating to the Company's
accounting, internal accounting controls or auditing matters will be referred to
the Audit  Committee of the Company's Board of Directors and other concerns will
be  referred  to  the  Lead  Director  of  the  Company's  Board  of  Directors.
Information  may be  submitted  confidentially  and  anonymously,  although  the
Company may be obligated by law to disclose the  information  or identity of the
person  providing the information in connection with government or private legal
actions and in some other circumstances. The Company's policy is not to take any
adverse  action,  and to not  tolerate  any  retaliation  against any person for
asking questions or making good faith reports of possible violations of law, the
Company policy or the Code of Business Conduct and Ethics.


                                       43







         SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

     The following table sets forth certain information regarding the beneficial
ownership of common stock as of March 22, 2007,  by (i) each person who is known
by the Company to own  beneficially  more than five  percent of the  outstanding
shares of common stock, (ii) each director of the Company, (iii) each NEO of the
Company and (iv) all directors and executive officers as a group:



                                                                           Number of     Percentage
Name of Person or Identity of Group                                          Shares      Of Class (a)
-----------------------------------                                        ----------    ------------
                                                                                       
Southeastern Asset Management, Inc. (c)................................    23,458,400        19.0
Longleaf Partners Fund
O. Mason Hawkins
6410 Poplar Avenue, Suite 900
Memphis, Tennessee  38119

Neuberger Berman, Inc. (d).............................................     6,157,021         5.0
Neuberger Berman, LLC
Neuberger Berman Management, Inc.
605 Third Ave.
New York, New York 10158-3698

Scott D. Sheffield (e) (f) (g) (i).....................................       768,433       (b)

Richard P. Dealy (e) (f) (g) ..........................................       140,063       (b)

Chris J. Cheatwood (e) (f) (g) (i) ....................................       127,506       (b)

Timothy L. Dove (e) (f) (g)............................................       234,164       (b)

Danny L. Kellum (f) (g)................................................        76,408       (b)

James R. Baroffio (f) (h)..............................................        16,422       (b)

Edison C. Buchanan (f).................................................        17,204       (b)

R. Hartwell Gardner (e) (f)............................................        45,037       (b)

Linda K. Lawson (f) (i)................................................        10,238       (b)

Andrew D. Lundquist (f)................................................        13,224       (b)

Charles E. Ramsey, Jr. (f).............................................        25,969       (b)

Frank A. Risch (f).....................................................         6,025       (b)

Mark S. Sexton (f) (i).................................................       114,464       (b)

Robert A. Solberg (f) .................................................        16,448       (b)

Jim A. Watson (f)......................................................         9,625       (b)

All directors and executive officers as a group (19 persons) (e) (f)...     1,882,389         1.5

-----------
(a)  Based on  123,386,066  shares of  common  stock  outstanding.
(b)  Does not exceed one percent of class.
(c)  The  Schedule  13G/A filed with the SEC on February  12,  2007,  which is a
     joint statement on Schedule 13G/A filed by Southeastern  Asset  Management,
     Inc.  ("Southeastern"),   Longleaf  Partners  Fund  and  O.  Mason  Hawkins
     ("Hawkins"),  states that the statement is being filed by Southeastern as a
     registered  investment  adviser,  and that all of the securities covered by
     the  statement  are owned  legally by  Southeastern's  investment  advisory
     clients and none are owned  directly or  indirectly  by  Southeastern.  The
     Schedule  13G/A  further  states that the  statement is also being filed by
     Hawkins, Chairman of the Board of Directors and CEO of Southeastern, in the
     event he could be  deemed  to be a  controlling  person of that firm as the
     result  of  his  official   positions  with  or  ownership  of  its  voting
     securities. The existence of such control is expressly disclaimed.  Hawkins
     does not own directly or indirectly any securities  covered by the Schedule
     13G/A for his own account.

                                       44






(d)  The  Schedule  13G/A filed with the SEC on February  13,  2007,  which is a
     joint  statement  on  Schedule  13G/A  filed  by  Neuberger  Berman,  Inc.,
     Neuberger Berman LLC, and Neuberger Berman  Management,  Inc.,  states that
     Neuberger Berman, LLC and Neuberger Berman  Management,  Inc. are deemed to
     be  beneficial  owners since they both have shared power to make  decisions
     whether  to retain or dispose  and vote the  securities  that are  actually
     owned by clients of Neuberger Berman,  LLC. Neuberger Berman, Inc. owns 100
     percent of both Neuberger Berman LLC and Neuberger Berman Management,  Inc.
     and does not own over one percent of the Company.
(e)  Includes  the  following  number of shares  subject  to  exercisable  stock
     options : Mr. Sheffield, 332,000; Mr. Dealy, 76,248; Mr. Cheatwood, 77,666;
     Mr. Dove, 107,666; and Mr. Gardner,  5,017; and all directors and executive
     officers as a group, 704,513.
(f)  Includes the following number of unvested  restricted  shares or restricted
     stock units: Mr.  Sheffield,  158,997;  Mr. Dealy,  38,182;  Mr. Cheatwood,
     34,166;  Mr. Dove, 63,265;  Mr. Kellum,  34,166;  Dr. Baroffio,  1,871; Mr.
     Buchanan,  6,306; Mr. Gardner,  6,929;  Mrs. Lawson,  1,871; Mr. Lundquist,
     4,779; Mr. Ramsey, 3,625; Mr. Risch, 3,907; Mr. Sexton, 1,871; Mr. Solberg,
     2,266;  Mr. Watson,  3,126;  and all directors and executive  officers as a
     group, 474,325.
(g)  Includes the following  number of shares held in each respective  officer's
     401(k) account: Mr. Sheffield,  10,412; Mr. Dealy, 305; Mr. Cheatwood, 510;
     Mr. Dove, 345; and Mr. Kellum, 522.
(h)  Includes 11,053 shares held in trust that are shares  beneficially owned by
     Dr.  Baroffio.  (i) Mr.  Sheffield's  beneficial  ownership  includes 7,327
     shares  held  in  Mr.  Sheffield's   investment   retirement  account.  Mr.
     Cheatwood's  beneficial  ownership  includes 3,000 shares held in custodial
     accounts  in the  names of his minor  children.  Mrs.  Lawson's  beneficial
     ownership includes 1,700 shares held in Mrs. Lawson's investment retirement
     accounts.  Mr. Sexton's beneficial  ownership includes 4,165 shares held in
     Mr. Sexton's investment retirement account.



             SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

     The  executive  officers and  directors of the Company are required to file
reports  with the SEC,  disclosing  the amount  and  nature of their  beneficial
ownership in common stock, as well as changes in that ownership.

     Based solely on its review of reports and written  representations that the
Company  has  received,  the  Company  is aware  that  Chris J.  Cheatwood,  the
Company's Executive Vice President,  Worldwide Exploration,  did not timely file
one report on Form 5 covering  a gift  transaction  effected  during  2005,  and
Robert A.  Solberg,  one of the  Company's  directors,  did not timely  file one
report on Form 4 covering  the  vesting  during  2006 of a  previously  reported
restricted  stock unit  award.  The  Company  believes  that all other  required
reports were timely filed during 2006.

                        TRANSACTIONS WITH RELATED PERSONS

     Benefit Arrangement for Mr. Sexton. In 2004, the Company acquired Evergreen
in a merger. Before the completion of the merger, Mark S. Sexton was Evergreen's
Chairman of the Board of  Directors,  President,  and Chief  Executive  Officer.
Under the terms of Mr. Sexton's change in control agreement with Evergreen,  the
Company provided Mr. Sexton  continuation of his health care and other insurance
benefits from the date of the merger through  September 2006,  although from the
beginning of 2006,  Mr. Sexton  obtained  health care insurance from his current
employer and did not file claims under the Company-provided coverage.

     Employment  of Tom  Sheffield.  Tom  Sheffield,  the  brother  of  Scott D.
Sheffield,  is employed at a  subsidiary  of the Company as the Raton Asset Team
Manager. For 2006, Tom Sheffield was paid $149,966 in base salary and $43,323 in
bonus and received  restricted  stock awards for 1,154 shares of Company  common
stock  with a fair  market  value  on the date of  grant  of  $50,303.  Scott D.
Sheffield disclaims any interest in Tom Sheffield's compensation.

     Bryan  Sheffield  and Well  Operations  Transaction.  The  Company has been
informed that Bryan  Sheffield,  the son of Scott D.  Sheffield,  plans to enter
into a contract  with a third party  under  which he (or a company he  controls)
will operate certain Spraberry field wells in which the Company holds an average
29.74  percent  working  interest.   The  total  expected  annual  overhead  and
supervision fees paid for operating these wells is approximately  $681,552 (with
the Company's expected net share being $248,610), based on 2006 actual billings.
The Company  determined  that it is in its  interest  for the  operator of these
wells to be properly  trained.  For this reason, in January 2007 Bryan Sheffield
was employed at a subsidiary of the  Company as an Operations Tech to supplement

                                       45






his training in the Spraberry  area.  Under this employment  arrangement,  Bryan
Sheffield's total annual compensation is less than $60,000.  The Company expects
that  Bryan  Sheffield's   employment  will  terminate  before  he  assumes  the
operations of these Spraberry wells.  Scott D. Sheffield  disclaims any interest
in any compensation  paid to Bryan Sheffield from the Company or from the future
operation of these wells.

Procedures for Review, Approval and Ratification of Related Person Transactions

     The Company's Corporate  Governance  Guidelines provide that the Nominating
and Corporate  Governance  Committee will periodically review all related person
transactions  that the rules of the SEC require be  disclosed  in the  Company's
Proxy Statement,  and make a recommendation to the Board of Directors  regarding
the initial authorization or ratification of any such transaction.  In the event
that  the  Board  of  Directors  considers  ratification  of  a  related  person
transaction and determines not to so ratify, the Corporate Governance Guidelines
provide that management will make all reasonable  efforts to cancel or annul the
transaction. In February 2007, the Nominating and Corporate Governance Committee
conducted its annual review of all such related person transactions.

     The Corporate Governance  Guidelines provide that in determining whether or
not to  recommend  the initial  approval  or  ratification  of a related  person
transaction,  the Nominating and Corporate  Governance Committee should consider
all of the relevant facts and circumstances available, including (if applicable)
but not limited to: (i) whether there is an appropriate  business  justification
for the transaction; (ii) the benefits that accrue to the Company as a result of
the  transaction;  (iii) the terms available to unrelated third parties entering
into similar  transactions;  (iv) the impact of the  transaction on a director's
independence (in the event the related person is a director, an immediate family
member of a director or an entity in which a director is a partner,  shareholder
or executive  officer);  (v) the  availability  of other sources for  comparable
products or  services;  (vi) whether it is a single  transaction  or a series of
ongoing,  related transactions;  and (vii) whether entering into the transaction
would be consistent with the Company's Code of Business Conduct and Ethics.

     There were no  transactions  since the beginning of 2006 that were required
to be reported in  "Transactions  with  Related  Persons"  where the  procedures
described above did not require review,  approval or ratification or where these
procedures were not followed.

          STOCKHOLDER PROPOSALS; IDENTIFICATION OF DIRECTOR CANDIDATES

     Any  stockholder of the Company who desires to submit a proposal for action
at the 2008 annual meeting of  stockholders  and wishes to have such proposal (a
"Rule 14a-8 Proposal")  included in the Company's proxy  materials,  must submit
such Rule 14a-8  Proposal to the Company at its principal  executive  offices no
later than  December  6, 2007,  unless the  Company  notifies  the  stockholders
otherwise.  Only those  Rule 14a-8  Proposals  that are timely  received  by the
Company  and  proper for  stockholder  action  (and  otherwise  proper)  will be
included in the Company's proxy materials.

     Any  stockholder of the Company who desires to submit a proposal for action
at the 2008  annual  meeting  of  stockholders,  but does not wish to have  such
proposal  (a  "Non-Rule  14a-8  Proposal")   included  in  the  Company's  proxy
materials,  must  submit  such  Non-Rule  14a-8  Proposal  to the Company at its
principal  executive  offices so that it is received no later than  February 19,
2008,  unless the Company  notifies the  stockholders  otherwise.  If a Non-Rule
14a-8  Proposal is not  received by the Company on or before  February 19, 2008,
then the Company  intends to exercise its  discretionary  voting  authority with
respect to such Non-Rule 14a-8 Proposal.

     "Discretionary  voting  authority"  is the  ability  to vote  proxies  that
stockholders  have  executed  and  returned  to  the  Company,  on  matters  not
specifically   reflected  in  the  Company's  proxy  materials,   and  on  which
stockholders have not had an opportunity to vote by proxy.

     It is  the  responsibility  of  the  Nominating  and  Corporate  Governance
Committee  to  identify,  evaluate  and  recommend  to the Board  the  Directors
nominees for election  at the  annual  meeting of  stockholders,  as well as for

                                       46






filling  vacancies or additions on the Board of Directors that may occur between
annual meetings.  The Nominating and Corporate Governance Committee endeavors to
recommend only director  candidates who possess the highest  personal values and
integrity; who have experience and have exhibited achievements in one or more of
the key professional,  business, financial, legal and other challenges that face
a large global U.S. independent oil and gas company; who exhibit sound judgment,
intelligence, personal character, and the ability to make independent analytical
inquiries;  who  demonstrate a willingness  to devote  adequate time to Board of
Director  duties;  and  who are  likely  to be able to  serve  on the  Board  of
Directors for a sustained period.  Consideration will also be given to the Board
of Directors'  overall  balance of diversity of  perspectives,  backgrounds  and
experiences.

     In identifying potential director candidates,  the Nominating and Corporate
Governance  Committee relies on any source available for the  identification and
recommendation  of  candidates,  including  current  directors and officers.  In
addition,  the Nominating and Corporate  Governance  Committee from time to time
will engage a third party  search  firm to  identify or  evaluate,  or assist in
identifying or evaluating potential candidates, for which the third party search
firm will be paid a fee.

     The  Nominating and Corporate  Governance  Committee will also consider any
nominee  recommended  by  stockholders  for  election  at the annual  meeting of
stockholders to be held in 2008 if that nomination is submitted in writing,  not
later than  December  6,  2007,  to the  Secretary,  Pioneer  Natural  Resources
Company,  5205 North O'Connor  Boulevard,  Suite 200, Irving,  Texas 75039. With
respect to each such nominee, the following  information must be provided to the
Company with the written nomination:

      a)    the nominee's name, address and other personal information;

      b)    the  number of  shares of  each  class and  series of  stock  of the
            Company held by such nominee;

      c)    the nominating stockholder's name, residential address and telephone
            number, business address and telephone number; and

      d)    all  other   information  required  to   be  disclosed  pursuant  to
            Regulation 14A of the Securities and Exchange Act of 1934.

     Each submission must also include a statement of the  qualifications of the
nominee,  a notarized consent signed by the nominee  evidencing a willingness to
serve as a  director,  if  elected,  and a  commitment  by the  nominee  to meet
personally with members of the Nominating and Corporate Governance Committee and
the Board of Directors.

     Stockholders   desiring  to  propose   action  at  the  annual  meeting  of
stockholders  must also comply  with  Article  Nine of the Amended and  Restated
Certificate of Incorporation  of the Company.  Under Article Nine, a stockholder
must submit to the Company,  no later than 60 days before the annual  meeting or
ten days  after  the  first  public  notice  of the  annual  meeting  is sent to
stockholders, a written notice setting forth (i) the nature of the proposal with
particularity,   including   the  written  text  of  the   proposal,   (ii)  the
stockholder's name, address and other personal  information,  (iii) any interest
of the  stockholder  in the  proposed  business,  (iv) the  name of any  persons
nominated to be elected or reelected  as a director by the  stockholder  and (v)
with  respect  to each such  nominee,  the  nominee's  name,  address  and other
personal information,  the number of shares of each class and series of stock of
the Company  held by such  nominee,  all  information  required to be  disclosed
pursuant to Regulation  14A of the  Securities  and Exchange Act of 1934,  and a
notarized letter containing such nominee's acceptance of the nomination, stating
his or her intention to serve as a director,  if elected,  and  consenting to be
named as a nominee in any proxy statement relating to such election.  The person
presiding at the annual  meeting  will  determine  whether  business is properly
brought before the meeting and will not permit the consideration of any business
not properly brought before the meeting.

                                       47







     Written  requests  for  inclusion  of any  stockholder  proposal  should be
addressed to Secretary,  Pioneer Natural Resources Company,  5205 North O'Connor
Boulevard,  Suite 200,  Irving,  Texas 75039. The Company suggests that any such
proposal be sent by certified mail, return receipt requested.

                             SOLICITATION OF PROXIES

     Solicitation  of  Proxies  may be  made  by  mail,  personal  interview  or
telephone  by officers,  directors  and regular  employees  of the Company.  The
Company may also request  banking  institutions,  brokerage  firms,  custodians,
nominees and  fiduciaries  to forward  solicitation  material to the  beneficial
owners of the common stock that those  companies or persons hold of record,  and
the Company will reimburse the forwarding expenses. In addition, the Company has
retained D.F. King & Co., Inc. to assist in solicitation for a fee estimated not
to exceed $9,000. The Company will bear all costs of solicitation.

                                STOCKHOLDER LIST

     In accordance with the Delaware  General  Corporation Law, the Company will
maintain at its corporate  offices in Irving,  Texas, a list of the stockholders
entitled to vote at the Annual Meeting. The list will be open to the examination
of any stockholder,  for purposes germane to the Annual Meeting, during ordinary
business hours for ten days before the Annual Meeting.

                       ANNUAL REPORT AND OTHER INFORMATION

     The Company's Annual Report to Stockholders for the year ended December 31,
2006, is being mailed to stockholders concurrently with this Proxy Statement and
does not form part of the proxy solicitation material.

     A copy of the  Company's  Annual  Report  on Form  10-K for the year  ended
December  31,  2006,  as filed  with the  SEC,  will be sent to any  stockholder
without charge upon written  request  addressed to Investor  Relations,  Pioneer
Natural Resources  Company,  5205 North O'Connor  Boulevard,  Suite 200, Irving,
Texas 75039.  A copy of this Proxy  Statement or our Annual  Report on Form 10-K
will also be sent upon  written or oral request to any  stockholder  of a shared
address to which a single copy of this Proxy  Statement or Annual Report on Form
10-K was  delivered.  Requests  may be made by  writing to  Investor  Relations,
Pioneer Natural Resources  Company,  5205 North O'Connor  Boulevard,  Suite 200,
Irving, Texas 75039 or by calling  972-969-3583.  The Annual Report on Form 10-K
is also available at the SEC's website in its EDGAR database at www.sec.gov.

     Stockholders  may  request  copies of the  Company's  Corporate  Governance
Guidelines,  Code of Business Conduct and Ethics and any charter for a committee
of the Board of  Directors  by writing to Investor  Relations at the address set
forth in the previous paragraph.

                                       48






                            INTERNET AND PHONE VOTING

     For  shares  of  stock  that  are  registered  in your  name,  you have the
opportunity  to vote by  internet  or phone  using  procedures  provided  by the
Company's   transfer   agent,   Continental   Stock  Transfer  &  Trust  Company
("Continental").  Votes  submitted by internet or phone must be received by 5:00
p.m.,  Eastern Time, on Tuesday,  May 15, 2007.  The giving of such a proxy will
not affect  your right to vote in person  should you decide to attend the Annual
Meeting.  To vote by internet or phone,  please follow the  instructions on your
proxy card.

     The  internet  and phone voting  procedures  are  designed to  authenticate
stockholder identities,  to allow stockholders to give their voting instructions
and to confirm that  stockholders'  instructions  have been  recorded  properly.
Stockholders  voting by internet should remember that the stockholder  must bear
costs  associated  with electronic  access,  such as usage charges from internet
access providers and telephone companies.

     For shares of stock that are  registered in a street name (the  stockholder
owns shares in the name of a bank, broker or other holder of record on the books
of the Company's transfer agent), you will receive  instructions with your proxy
materials that you must follow in order to have your shares voted. Please review
your Proxy or voting instruction card to determine whether you can vote by phone
or electronically.

                                     ******

     IT IS  IMPORTANT  THAT  PROXIES BE  RETURNED  PROMPTLY.  WHETHER OR NOT YOU
EXPECT TO ATTEND THE MEETING IN PERSON,  YOU ARE URGED TO VOTE BY  INTERNET,  BY
PHONE  OR BY  COMPLETING,  SIGNING  AND  RETURNING  THE  PROXY  IN THE  ENCLOSED
POSTAGE-PAID, ADDRESSED ENVELOPE.

                                             By Order of the Board of Directors,


                                             /s/ Mark H. Kleinman
                                             --------------------
                                             Mark H. Kleinman
                                             Secretary

Irving, Texas
April 4, 2007


                                       49







                          VOTE BY INTERNET OR TELEPHONE
                            QUICK***EASY***IMMEDIATE

                        PIONEER NATURAL RESOURCES COMPANY

             PROXY SOLICITED FOR THE ANNUAL MEETING OF STOCKHOLDERS
                             TO BE HELD MAY 16, 2007


TO VOTE BY INTERNET
www.continentalstock.com
Have  this  proxy  card  in  hand  when  you  access  the  above   website.   At
"ContinentaLink"  on the right side,  select  "Proxy  Voting Log In." Follow the
instructions on the screen to vote your shares.

TO VOTE BY PHONE
Call toll-free (in the U.S.)  1-866-894-0537.  Have this proxy card in hand when
you call and follow the instructions.

Your  internet or phone vote works in the same  manner as if you marked,  signed
and returned your proxy card by mail.  Internet and phone votes must be received
by 5:00 p.m., Eastern Time, on May 15, 2007.

           If you vote by internet or phone, please do not return the
                                  card below.

TO VOTE BY MAIL
Mark,  sign  and  date  the  proxy  card  below,  detach  it and  return  in the
postage-paid envelope provided.

                 FOLD AND DETACH HERE AND READ THE REVERSE SIDE
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

                                  PROXY BY MAIL

                                         Please mark your votes like this [ X ]

THIS  PROXY,  WHEN  PROPERLY  EXECUTED,  WILL BE  VOTED  AS  DIRECTED,  OR IF NO
DIRECTION  IS  INDICATED,  WILL BE VOTED  "FOR"  THE  PROPOSALS.  THIS  PROXY IS
SOLICITED BY THE BOARD OF DIRECTORS. TO BE VALID, THIS PROXY MUST BE SIGNED.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" ITEMS 1, 2 AND 3.

ITEM 1 - ELECTION OF DIRECTORS          [  ]  FOR ALL     [  ]  WITHHELD FOR ALL
Nominees:
01   R. Hartwell Gardner     03   Frank A. Risch
02   Linda K. Lawson         04   Mark S. Sexton

WITHHELD FOR: (List below each nominee for whom you do not wish to vote.)

------------------------------------------------------------------------

ITEM 2 - RATIFICATION OF SELECTION OF INDEPENDENT AUDITORS

         [  ]  FOR           [  ]  AGAINST           [  ]  ABSTAIN

ITEM 3 - APPROVAL OF THE AMENDED AND RESTATED EMPLOYEE STOCK PURCHASE PLAN

         [  ]  FOR           [  ]  AGAINST           [  ]  ABSTAIN

IN THEIR  DISCRETION,  THE PROXIES MAY VOTE ON ANY OTHER MATTERS AS MAY PROPERLY
COME BEFORE THE MEETING OR ANY ADJOURNMENT(S) THEREOF.

IF YOU WISH TO VOTE BY INTERNET OR PHONE, PLEASE READ THE INSTRUCTIONS ABOVE.

Signature ____________________ Signature ______________________  Date ________

Please sign exactly as name appears hereon.  Joint owners should each sign. When
signing as attorney, executor,  administrator,  trustee or guardian, please give
full title as such. If a corporation or  partnership,  sign in full corporate or
partnership name by duly authorized officer and give title.







Access to Pioneer stockholder account information and other stockholder services
are available on the internet!

Visit Continental Stock Transfer's website at
www.continentalstock.com
for their Internet Stockholder Service - ContinentaLink

Through this service,  shareholders  can change  addresses,  receive  electronic
forms and view account transaction history and dividend history.

To access this service,  visit the website listed above. At  "ContinentaLink" on
the right side of the home page,  select  "Shareholder  Log In." From there, you
can either  "View a Sample  Account"  or you can  register  (choose  "First Time
Visitor" then "New Member Sign-Up"). Guidance is provided on the website.






                 FOLD AND DETACH HERE AND READ THE REVERSE SIDE
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

PROXY

         THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF

                        PIONEER NATURAL RESOURCES COMPANY

The undersigned  hereby appoints  Richard P. Dealy and Mark S. Berg, and each of
them,  as attorneys in fact and proxies for the  undersigned  with full power of
substitution and revocation as to each of them, to represent the undersigned and
to vote all the shares of common stock of Pioneer Natural Resources Company that
the  undersigned is entitled to vote at the Annual Meeting of Stockholders to be
held on May 16, 2007, and any  adjournment  or  postponement  thereof,  upon the
matters set forth on the reverse side.

       (Continued, and to be marked, dated and signed, on the other side)







                          VOTE BY INTERNET OR TELEPHONE
                            QUICK***EASY***IMMEDIATE

                        PIONEER NATURAL RESOURCES COMPANY

             PROXY SOLICITED FOR THE ANNUAL MEETING OF STOCKHOLDERS
                             TO BE HELD MAY 16, 2007


TO VOTE BY INTERNET
www.continentalstock.com
Have  this  proxy  card  in  hand  when  you  access  the  above   website.   At
"ContinentaLink"  on the right side,  select  "Proxy  Voting Log In." Follow the
instructions on the screen to vote your shares.

TO VOTE BY PHONE
Call toll-free (in the U.S.)  1-866-894-0537.
Have this proxy card in hand when you call and follow the instructions.

Your  internet or phone vote works in the same  manner as if you marked,  signed
and returned your proxy card by mail.

           If you vote by internet or phone, please do not return the
                                  card below.

TO VOTE BY MAIL
Mark,  sign  and  date  the  proxy  card  below,  detach  it and  return  in the
postage-paid envelope provided.

                 FOLD AND DETACH HERE AND READ THE REVERSE SIDE
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                  PROXY BY MAIL
                                         Please mark your votes like this [ X ]

THIS  PROXY,  WHEN  PROPERLY  EXECUTED,  WILL BE  VOTED  AS  DIRECTED,  OR IF NO
DIRECTION IS INDICATED,  WILL BE VOTED IN ACCORDANCE WITH THE TERMS OF THE TRUST
AGREEMENT.  THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS. TO BE VALID, THIS
PROXY MUST BE SIGNED.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" ITEMS 1, 2 AND 3.

ITEM 1 - ELECTION OF DIRECTORS         [  ]  FOR ALL     [  ]  WITHHELD FOR ALL
Nominees:
01   R. Hartwell Gardner           03   Frank A. Risch
02   Linda K. Lawson               04   Mark S. Sexton

WITHHELD FOR: (List below each nominee for whom you do not wish to vote.)
-------------------------------------------------------------------------

ITEM 2 - RATIFICATION OF SELECTION OF INDEPENDENT AUDITORS

         [  ]   FOR           [  ]  AGAINST           [  ]  ABSTAIN

ITEM 3 - APPROVAL OF THE AMENDED AND RESTATED EMPLOYEE STOCK PURCHASE PLAN

         [  ]   FOR           [  ]  AGAINST           [  ]  ABSTAIN

IN THEIR  DISCRETION,  THE PROXIES MAY VOTE ON ANY OTHER MATTERS AS MAY PROPERLY
COME BEFORE THE MEETING OR ANY ADJOURNMENT(S) THEREOF.

IF YOU WISH TO VOTE BY INTERNET OR PHONE, PLEASE READ THE INSTRUCTIONS ABOVE.

Signature ____________________ Signature ______________________  Date ________

Please sign exactly as name appears hereon.  Joint owners should each sign. When
signing as attorney, executor,  administrator,  trustee or guardian, please give
full title as such. If a corporation or  partnership,  sign in full corporate or
partnership name by duly authorized officer and give title.









The Annual  Meeting of  Stockholders  will be held on May 16, 2007.  Your voting
instruction must be received by 5:00 p.m. Eastern Time, on May 11, 2007 to allow
Vanguard to vote according to your instruction.








                 FOLD AND DETACH HERE AND READ THE REVERSE SIDE
-  -  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

PROXY

                 PIONEER NATURAL RESOURCES USA, INC. 401(k) PLAN

TO: THE VANGUARD  FIDUCIARY  TRUST  COMPANY,  TRUSTEE FOR THE EMPLOYER  MATCHING
CONTRIBUTION  (STOCK ACCOUNT) OF THE PIONEER NATURAL  RESOURCES USA, INC. 401(k)
AND MATCHING PLAN

In connection with the proxy materials I received relating to the Annual Meeting
of Stockholders of Pioneer Natural Resources Company to be held on May 16, 2007,
I direct you to execute a proxy  with  respect to all shares of common  stock of
Pioneer to which I have the right to give voting  instructions  under the 401(k)
plan upon the matters set forth on the reverse side. I understand  you will hold
these instructions strictly confidential.

       (Continued, and to be marked, dated and signed, on the other side)















                                   APPENDIX A




                        PIONEER NATURAL RESOURCES COMPANY
                          EMPLOYEE STOCK PURCHASE PLAN

            (Amended and Restated Effective as of September 1, 2007)








                        PIONEER NATURAL RESOURCES COMPANY
                          EMPLOYEE STOCK PURCHASE PLAN

            (Amended and Restated Effective as of September 1, 2007)


     This Amended and Restated PIONEER NATURAL  RESOURCES COMPANY EMPLOYEE STOCK
PURCHASE  PLAN (this "Plan") is made and executed by Pioneer  Natural  Resources
Company, a Delaware Corporation (the "Company").

W I T N E S S E T H   T H A T:

     WHEREAS the Pioneer Natural  Resources Company Employee Stock Purchase Plan
was Adopted by the Board of Directors of the Company (the  "Board') and approved
by the stockholders of the Company on August 7, 1997;

     WHEREAS,  the Company  amended and restated the Plan on December 9, 2005 to
incorporate prior amendments and make certain other changes;

     WHEREAS,  the  Company  now  desires to again amend and restate the Plan to
extend the term of the Plan and to make certain other changes;

     NOW,  THEREFORE,  in  consideration  of the  premises  and  pursuant to the
authority  reserved  thereunder,  the Pioneer Natural Resources Company Employee
Stock Purchase Plan is hereby amended by restatement in its entirety,  effective
as of September 1, 2007, to read as follows:

     1. Purpose.  The purpose of the Plan is to provide eligible  employees with
an incentive to advance the interests of the Company by affording an opportunity
to purchase stock of the Company at a favorable price.

     2.  Administration  Of The  Plan.  The  Plan  shall  be  administered  by a
committee  of, and  appointed  by, the Board (the  "Committee").  Subject to the
provisions of the Plan, the Committee  shall interpret and construe the Plan and
all options granted under the Plan;  shall make such rules as it deems necessary
for the proper  administration of the Plan; shall make all other  determinations
necessary  or  advisable  for the  administration  of the  Plan,  including  the
determination  of  eligibility  to  participate  in the Plan and the amount of a
Participant's (as defined in subparagraph 6(b)) option under the Plan; and shall
correct any defect or supply any omission or reconcile any  inconsistency in the
Plan or in any  option  granted  under the Plan in the  manner and to the extent
that the Committee  deems desirable to carry the Plan or any option into effect.
The Committee shall, in its sole discretion  exercised in good faith,  make such
decisions or determinations and take such actions as it deems  appropriate;  and
all such  decisions,  determinations  and actions taken or made by the Committee
pursuant to this and the other paragraphs of the Plan shall be conclusive on all
parties.  The Committee shall not be liable for any decision,  determination  or
action taken in good faith in connection with the administration of the Plan.

     3.  Participating  Companies.  Each present and future parent or subsidiary
corporation of the Company (within the meaning of Sections 424(e) and (f) of the
Internal  Revenue Code of 1986, as amended (the "Code")) that is eligible by law
to participate in the Plan shall be a "Participating  Company" during the period
that such  corporation  is such a parent or  subsidiary  corporation;  provided,
however,  that the  Committee may at any time and from time to time, in its sole
discretion,  terminate a Participating  Company's Plan participation;  provided,
further  however,  that any  foreign  parent or  subsidiary  corporation  of the
Company shall be eligible to  participate  in the Plan only upon approval of the
Board or the Committee.  Any Participating Company may, by appropriate action of
its board of directors,  terminate its  participation  in the Plan.  Transfer of
employment  among the Company and  Participating  Companies (and among any other
parent or  subsidiary  corporation  of the  Company)  shall not be  considered a
termination of employment hereunder.






     4. Eligibility.  All employees, other than officers, of the Company and the
Participating   Companies   who  have  been  employed  by  the  Company  or  any
Participating  Company (including any predecessor  company) for at least six (6)
months  (including any authorized  leave of absence meeting the  requirements of
Treasury  Regulation  ss.  1.421-7(h)(2))  as of the  applicable  date of  grant
(defined below) and who are customarily  employed at least 20 hours per week and
at least five (5) months per year shall be eligible to  participate in the Plan;
provided,  however,  that no option  shall be  granted  to an  employee  if such
employee,  immediately  after the option is granted,  owns stock possessing five
percent or more of the total  combined  voting  power or value of all classes of
stock of the  Company or of its parent or  subsidiary  corporation  (within  the
meaning of Sections 423(b)(3) and 424(d) of the Code) ("Eligible Employee").

     5. Stock  Subject To the Plan.  Subject to the  provisions  of paragraph 12
(relating to adjustment upon changes in stock),  the aggregate  number of shares
of the authorized  common stock,  par value $.01 per share,  of the Company (the
"Stock") which may be sold pursuant to options  granted under the Plan shall not
exceed the original  number of shares  authorized  under the Plan (750,000) less
the total  number of shares  sold under the Plan from the  adoption  of the Plan
through the effective date of this amendment and  restatement of the Plan.  Such
shares may be unissued shares, reacquired shares, or shares bought on the market
for  purposes of the Plan.  Should any option  granted  under the Plan expire or
terminate prior to its exercise in full, the shares theretofore  subject to such
option  may again be  subject to an option  granted  under the Plan.  Any shares
which are not subject to  outstanding  options upon the  termination of the Plan
shall cease to be subject to the Plan.

     6.  Grant of Options.

             (a)  General  Statement;  "Date of  Grant;" "Option  Period;" "Date
         Of Exercise." Upon the effective date of the Plan and  continuing while
         the Plan remains in force,  the Company  shall offer options  under the
         Plan to all Eligible  Employees to purchase shares of Stock.  Except as
         otherwise determined  by the  Committee, these options shall be granted
         on January 1, 2008,  and,  thereafter,  on the first  day of January of
         each subsequent year (each of which dates is  herein referred  to  as a
         "date of grant"). The term of each option granted shall be for a period
         of eight (8) months  beginning on date of grant and ending on August 31
         (each such 8-month period is herein referred to as an "option period").
         The last day of each option period is herein  referred to as a "date of
         exercise."  The number  of shares  subject  to each option shall be the
         quotient of the  sum of the  payroll deductions withheld on  behalf  of
         each  Participant in  accordance with  subparagraph  6(b), the payments
         made by  such Participant  pursuant to  subparagraph  6(f)  during  the
         option  period and any amount carried forward from the preceding option
         period  pursuant to  subparagraph  7(a),  divided by the "option price"
         (defined in subparagraph  7(b) of the Stock,  excluding all  fractions;
         provided,  however,  that the  maximum  number of  shares that  may  be
         subject to any  option may  not exceed one  thousand (1000) (subject to
         adjustment as provided in paragraph 12).

             (b)  Election to  Participate;   Payroll  Deduction  Authorization.
         Except as  provided  in  subparagraph  6(f), an  Eligible  Employee may
         participate in the Plan only by means of payroll  deduction.  Except as
         provided in  subparagraph  6(g), each  Eligible  Employee who elects to
         participate in  the Plan (each  such  participating  Eligible  Employee
         being a  "Participant")  shall deliver to the Company,  within the time
         period  prescribed  by  the  Committee,  a  written  payroll  deduction
         authorization  on a  form  prepared  by the  Committee whereby he gives
         notice of  his  election to  participate  in the  Plan  as  of the next
         following  date  of  grant,  and  whereby  he   designates  an integral
         percentage  or  specific  amount of  his  "eligible  compensation"  (as
         defined in subparagraph  6(d)) to be deducted from his compensation for
         each pay period and credited to a book entry account established in his
         name. The designated  percentage or specific amount may not result in a
         deduction during any payroll period of an amount less than $20.00.  The
         designated  percentage  or specific amount may not exceed either of the
         following:  (i) 15% of  the amount of eligible  compensation from which
         the  deduction  is  made;  or (ii)  an  amount  which  will  result  in
         noncompliance  with the $25,000 limitation stated in subparagraph 6(e).

             (c)  Changes  in  Payroll  Authorization.  Except  as  provided  in
         subparagraph 8(a), the payroll deduction  authorization  referred to in
         subparagraph 6(b) may not be changed during the option period.






             (d)   "Eligible   Compensation"   Defined.   The  term    "eligible
         compensation" means the gross (before taxes are withheld)  total of all
         wages,  salaries,  commissions and  bonuses  received during the option
         period, except that such term shall include elective contributions made
         on an employee's behalf by the Company or a Participating  Company that
         are not includable in income under Section 125 or Section  402(e)(3) of
         the Code.  Notwithstanding the foregoing, "eligible compensation" shall
         not  include  (i)  employer  contributions  to  or  payments  from  any
         deferred compensation program,  whether such program is qualified under
         Section  401(a) of the Code (other than amounts  considered as employer
         contributions  under Section  402(e)(3)  of the Code) or  nonqualified,
         (ii) amounts  realized  from  the receipt or exercise of a stock option
         that is not an incentive stock option within the meaning of Section 422
         of the Code, (iii) amounts  realized at the time property  described in
         Section 83 of the Code is freely  transferable or no longer  subject to
         a substantial risk of forfeiture,  (iv) amounts realized as a result of
         an election described in Section 83(b) of the Code,  and (v) any amount
         realized  as a result of a disqualifying disposition within the meaning
         of Section 421(a) of the Code.

             (e)  $25,000 Limitation.  No Eligible  Employee shall be granted an
         option  under the  Plan to  the  extent such  grant would permit him to
         purchase  Stock  under the  Plan  and  under all  other  employee stock
         purchase   plans  of  the  Company   and  its   parent  and  subsidiary
         corporations (as such  terms are defined in  Section 424(e)  and (f) of
         the Code) to accrue at  a rate which exceeds $25,000 of the Fair Market
         Value of Stock (determined at  the time the option is granted) for each
         calendar  year in which  any such  option  granted to  such employee is
         outstanding at any time (within the meaning of Section 423(b)(8) of the
         Code).

             (f)  Leaves of Absence. During a paid leave of absence  approved by
         the Company  and meeting  the  requirements of  Treasury Regulation ss.
         1.421-7(h)(2),   a  Participant's  elected   payroll  deductions  shall
         continue.  If  a Participant  takes an unpaid  leave of absence that is
         approved  by the  Company  or a  Participating  Company  and  meets the
         requirements  of  Treasury  Regulation  ss.  1.421-7(h)(2),  then  such
         Participant may continue participation in the Plan by cash  payments to
         the  Company on his  normal pay  days  equal to  the  reduction in  his
         payroll  deductions  caused  by his  leave.  If a  Participant  on such
         leave fails to make such payments, or if a Participant takes a leave of
         absence  that is  not described  in the  preceding  provisions  of this
         subparagraph 6(f),  then the  Committee  shall  determine  whether  the
         Participant  shall  be  considered to  have  withdrawn  from  the  Plan
         pursuant  to  the  provisions  of  paragraph  8  hereof  or whether the
         Participant's  payroll  deductions shall remain subject to the Plan and
         used to exercise options on the next following date of exercise.

             (g)  Continuing  Election.  Unless a Participant is notified to the
         contrary, a Participant (i) who has elected to  participate in the Plan
         pursuant to  subparagraph 6(b) as of a date of grant and (ii) who takes
         no action to change or revoke  such  election as of the next  following
         date of grant  and/or as of any subsequent  date of grant  prior to any
         such  respective  date of grant,  shall be deemed to have made the same
         election, including the same attendant payroll deduction authorization,
         for such next following and/or  subsequent  date(s) of  grant as was in
         effect  for  the  date of  grant  for  which he made  such election  to
         participate.  A Participant who wants  to discontinue  participation in
         the  Plan for a subsequent option period shall deliver to the Company a
         notice of withdrawal pursuant to paragraph 8, at least thirty (30) days
         prior to the beginning of the option period.

     7.  Exercise of Options.

             (a)  General Statement. Each Eligible Employee who is a Participant
         in the Plan,  automatically and  without any  act on his part, shall be
         deemed to have  exercised his  option on each  date of  exercise to the
         extent that  the cash balance  then in  his account  under the  Plan is
         sufficient  to   purchase  at  the  "option  price"   (as  defined   in
         subparagraph 7(b)) whole shares of Stock.  Any balance remaining in his
         account after payment of the purchase price of  those whole shares may,
         at the discretion of the Company, either be  refunded to him as soon as
         practicable after  each date of  exercise,  or carried forward and used
         towards the  purchase of  whole  shares in  the  next  following option
         period.

             (b)  "Option Price" Defined. The option price per share of Stock to
         be paid by each Eligible  Employee on each exercise of his option shall
         be an amount equal to the lesser of 85% of the Fair Market Value of the






         Stock on the date of exercise or on the date of grant. For all purposes
         under the Plan, the  "Fair Market Value" of a share of Stock means, for
         a particular day:

                     (i)  If  shares of  Stock of  the same  class are listed or
               admitted  to unlisted  trading  privileges  on  any  national  or
               regional securities exchange  at the date of determining the Fair
               Market Value, then the last reported sale price,  regular way, on
               the composite tape  of that exchange on that  business day or, if
               no such sale takes place on that business day, the average of the
               closing bid  and asked  prices,  regular  way, in  either case as
               reported  in the  principal  consolidated  transaction  reporting
               system   with  respect  to  securities   listed  or  admitted  to
               unlisted trading  privileges on  that securities  exchange or, if
               no such  closing  prices  are  available  for that  day, the last
               reported  sale  price,  regular way,  on the  composite  tape  of
               that  exchange  on  the last  business  day  before  the  date in
               question; or

                     (ii) If shares of Stock of the same class are not listed or
               admitted  to  unlisted   trading   privileges  as   provided   in
               subparagraph (i) and if sales prices for  shares of Stock of  the
               same class  in the  over-the-counter  market  are reported by the
               National  Association  of  Securities  Dealers,   Inc.  Automated
               Quotations,  Inc. ("NASDAQ") National Market System (or a similar
               system then  in use) at the date of  determining  the Fair Market
               Value,  then the  last  reported  sales price so reported on that
               business  day or,  if no  such sale  takes place on that business
               day, the average of the high bid and low asked prices so reported
               or,  if no  such  prices  are  available for  that day,  the last
               reported sale price so  reported  on the last business day before
               the date in question; or

                     (iii)  If shares of Stock of  the same class are not listed
               or admitted  to  unlisted  trading   privileges  as  provided  in
               subparagraph (i) and sales prices for shares of Stock of the same
               class are not reported by the NASDAQ  National Market System  (or
               a similar  system  then  in  use)  as  provided  in  subparagraph
               (ii), and if bid and asked prices for shares of Stock of the same
               class in the over-the-counter market are reported by  NASDAQ (or,
               if  not  so   reported,   by   the   National  Quotation   Bureau
               Incorporated)  at the date of determining the Fair Market  Value,
               then the average  of the high bid and low  asked  prices  on that
               business  day or, if no such  prices are available  for that day,
               the average of the high bid and low asked  prices on  the last
               business day before the date in question; or

                     (iv)  If shares of Stock  of the same class are  not listed
               or admitted  to  unlisted  trading  privileges  as   provided  in
               subparagraph  (i)  and  sales  prices  or bid  and  asked  prices
               therefor  are  not reported by  NASDAQ (or the National Quotation
               Bureau   Incorporated)  as   provided   in  subparagraph  (ii) or
               subparagraph (iii)  at the  date of  determining the Fair  Market
               Value, then the value determined in good faith by  the Committee,
               which determination shall be conclusive for all purposes; or

                     (v)  If  shares of  Stock of  the same  class are listed or
               admitted  to   unlisted   trading   privileges   as  provided  in
               subparagraph (i) or sales prices or bid and asked prices therefor
               are  reported  by  NASDAQ   (or  the  National  Quotation  Bureau
               Incorporated)  as provided in  subparagraph  (ii) or subparagraph
               (iii) at the  date of  determining  the Fair  Market  Value,  but
               the  volume  of  trading is  so low  that the  Board of Directors
               determines in good faith that such  prices are not  indicative of
               the fair value of the Stock,  then the value  determined  in good
               faith by the  Committee,  which determination shall be conclusive
               for all purposes  notwithstanding the provisions of subparagraphs
               (i), (ii) or (iii).

             (c)   Delivery of Stock.  As soon as practicable after each date of
         exercise,  the Company shall deposit into each Participant's  brokerage
         account  maintained  for the  purposes of holding Stock under this Plan
         and other  employee benefit  plans of the Company,  the number of whole
         shares of Stock  purchased  by such Participant upon exercise of his or
         her options  granted hereunder.  Except as  provided in the immediately
         following sentence,  shares of Stock purchased upon exercise of options
         granted hereunder shall be  uncertificated  and evidenced by book entry
         into the brokerage accounts described above. Upon written request  made
         by any  Participant to the Company,  the Company shall arrange, as soon
         as practicable  after receipt  of any such request,  to deliver to such






         Participant a certificate  representing any or all such  uncertificated
         shares of Stock.  In the event the  Company is required  to obtain from
         any  commission or  agency  authority  to  issue any  shares  of  Stock
         hereunder, the Company shall seek to obtain such  authority.  Inability
         of the Company to obtain from any such  commission  or agency authority
         which counsel for the Company deems  necessary for the lawful  issuance
         of any shares of Stock shall relieve the  Company from liability to any
         Participant in the Plan except to return to the  Participant the amount
         of the balance in the  Participant's account. The Company may cause any
         Stock  certificates  issued in connection with the  exercise of options
         under the  Plan to bear  such legend  or legends,  and the  Company may
         take such  other actions,  as it  deems appropriate in order to reflect
         the  provisions of this subparagraph 7(c) and to assure compliance with
         applicable  securities  laws.  Neither  the  Company  nor the Committee
         shall have any  liability  with  respect to a delay in the  delivery of
         Stock or a  certificate pursuant to this subparagraph 7(c).

     8.  Withdrawal from the Plan.

             (a)  General Statement.  Any Participant may withdraw in whole from
         the Plan at any time prior to 30 days before the exercise date relating
         to  a particular  option  period.  Partial  withdrawals  shall  not  be
         permitted.  A Participant  who wishes to  withdraw  from the  Plan must
         timely deliver to the Company a notice of withdrawal on a form prepared
         by the  Committee.  The  Company,  promptly following the time when the
         notice of withdrawal is delivered,  shall refund to the Participant the
         amount  of  the  cash  balance in  his  account  under  the  Plan;  and
         thereupon,  automatically  and without any further act on his part, his
         payroll deduction authorization and his interest in unexercised options
         under the Plan shall terminate.

             (b)  Eligibility Following Withdrawal.  A Participant who withdraws
         from the Plan shall  not be eligible  to participate in the Plan during
         the then  current  option period  (if any),  but shall be  eligible  to
         participate again in the  Plan in a subsequent  option period (provided
         that he is otherwise an Eligible Employee at such time).

     9. Termination of Employment. If the employment of a Participant terminates
for any reason  whatsoever,  his  participation  in the Plan  automatically  and
without any act on his part shall terminate as of the date of the termination of
his  employment.  The Company shall refund to him the amount of the cash balance
in his account under the Plan, and thereupon his interest in unexercised options
under the Plan shall terminate.

     10. Restriction Upon Assignment of Option. An option granted under the Plan
shall not be pledged, assigned or transferred otherwise than by will or the laws
of descent and  distribution.  Each  option  shall be  exercisable,  only by the
Participant  to whom granted  during such  Participant's  lifetime.  The Company
shall not recognize  and shall be under no duty to recognize  any  assignment or
purported  assignment by a Participant  of his option or of any rights under his
option,  and any such  attempt  may be treated by the  Company as an election to
withdraw from the Plan the notice for which has been delivered to the Company.

     11. No Rights of Stockholder Until Stock Issued.  With respect to shares of
Stock  subject  to  an  option,  a  Participant  shall  not  be  deemed  to be a
stockholder,  and he  shall  not  have  any of the  rights  or  privileges  of a
stockholder,  until,  (a)  shares  of Stock  are  deposited  into his  brokerage
account,  as described in  subparagraph  7(c) hereof,  or (b) a certificate  for
shares of Stock is issued on his behalf, whichever occurs first."

     12. Adjustments Upon Changes in Stock.

             (a)  Adjustments Upon  Changes in Capitalization.  In the event  of
         any change in the number or kind of outstanding shares of Stock subject
         to  options   hereunder  effected   without  receipt  of  consideration
         therefor  by the  Company, by reason of a stock dividend,  stock split,
         combination,  exchange of shares or other  recapitalization, merger, or
         otherwise,  in  which the  Company  is the  surviving  corporation,  an
         appropriate  and  proportionate  adjustment shall be made in the number
         or kind of shares as to which options  are or may be granted hereunder.
         A  corresponding  adjustment  changing  the number  or  kind of  shares
         allocated to unexercised options or portions thereof,  which shall have






         been granted prior to any such change, shall likewise be made. Any such
         adjustment,  however,  in the outstanding options shall be made without
         change in the total price applicable to the unexercised  portion of the
         option  but with a  corresponding  adjustment,  if  appropriate, in the
         price for each share of Stock  covered by the option. In the event of a
         dispute concerning such adjustment, the decision of the Committee shall
         be  conclusive.  The number  of shares  subject to  any  option granted
         hereunder  shall be  automatically  reduced by  any  fraction  included
         therein which results from any adjustment made pursuant to this Section
         12(a).

             (b) Adjustments  Upon Change of Control. Further, in the event of a
         Change  of  Control  (as defined  below) of the Company,  the Committee
         shall, at its  option,(i)  substitute  for the  shares of  the  Company
         subject to  the  unexercised  portions of such  outstanding  options an
         appropriate number of shares of each class of stock or other securities
         of the reorganized or  merged or consolidated  corporation  which  were
         distributed to the stockholders of the Company with respect to the same
         class of  shares of the Company (or, as appropriate,  in the case of an
         acquisition  of the  Company by  another  corporation,  substitute  the
         shares of the acquiring corporation for the shares of the Company);  or
         (ii)  cancel  all such  options  as of  the effective  date of any such
         transaction  by giving  notice to  each holder  thereof or his personal
         representative of its intention to do so and by permitting  the holders
         thereof to exercise of all such outstanding options,  without regard to
         any other provisions of the Plan,  during the 30-day period immediately
         preceding such effective date; or (iii) allow the options granted under
         the Plan to remain outstanding without any modifications or amendments.

             (c)  Change of Control Defined. For purposes of subparagraph  12(b)
         of the Plan,  a "Change  of Control" means an event that  constitutes a
         "change  in  control"  as  defined  in  the  Company's  2006  Long-Term
         Incentive Plan, as  subsequently  amended from  time to time; or if any
         successor  or  subsequent  equity  incentive plan  is  adopted  by  the
         Company, "Change in Control" means an event that constitutes  a "change
         in control" under  such  successor or  subsequent plan, as amended from
         time to time; provided, however, that any amendment to such  definition
         or definition in a successor or subsequent plan shall not be applied in
         determining  the  definition of Change in Control under this Plan, with
         respect to any rights  applicable to the option period during which the
         revision  to  the  definition occurs,  unless such amended or alternate
         definition operates at least as  favorably to the affected  Participant
         in all relevant respects  as the definition  of Change in Control prior
         to such amendment.

     13. Use of Funds;  No  Interest  Paid.  All funds  received  or held by the
Company  under the Plan shall be included  in the  general  funds of the Company
free of any  trust  or  other  restriction,  and may be used  for any  corporate
purpose. No interest shall be paid to any Participant or credited to his account
under the Plan.

     14. Term of the Plan.  This amended and restated  version of the Plan shall
be  effective  as of  September  1,  2007.  If not sooner  terminated  under the
provisions of paragraph 15, the Plan shall terminate upon and no further options
shall be granted after December 31, 2017.

     15.  Amendment or  Termination of the Plan. The Board in its discretion may
terminate the Plan at any time with respect to any shares for which options have
not theretofore  been granted.  The Board shall have the right to alter or amend
the Plan or any part thereof from time to time; provided,  that no change in any
option  theretofore  granted  may be made which  would  impair the rights of the
Participant without the consent of such Participant; and provided, further, that
the Board may not make any  alteration  or  amendment  which would  increase the
aggregate number of shares which may be issued pursuant to the provisions of the
Plan  (other  than as a result of the  anti-dilution  provisions  of the  Plan),
change the class of  individuals  eligible  to receive  options  under the Plan,
extend the term of the Plan, cause options issued under the Plan to fail to meet
the  requirements for employee stock purchase plans as defined in Section 423 of
the  Code,  or  otherwise   modify  the   requirements  as  to  eligibility  for
participation  in the Plan  without  the  approval  of the  stockholders  of the
Company.

     16.  Securities Laws. The Company shall not be obligated to issue any Stock
pursuant  to any  option  granted  under  the Plan at any time  when the  shares
covered by such  option have not been  registered  under the  Securities  Act of






1933, as amended, and such other state and federal laws, rules or regulations as
the  Company or the  Committee  deems  applicable  and,  in the opinion of legal
counsel  for  the  Company,   there  is  no  exemption  from  the   registration
requirements of such laws,  rules or regulations  available for the issuance and
sale of such shares.  Further,  all Stock acquired pursuant to the Plan shall be
subject to the Company's policy or policies,  if any, concerning compliance with
securities laws and regulations, as the same may be amended from time to time.

     17. No Restriction on Corporate Action. Nothing contained in the Plan shall
be construed to prevent the Company or any subsidiary  from taking any corporate
action which is deemed by the Company or such subsidiary to be appropriate or in
its best  interest,  whether or not such action would have an adverse  effect on
the Plan or any award made under the Plan.  No  employee,  beneficiary  or other
person shall have any claim against the Company or any subsidiary as a result of
any such action.


         EXECUTED this _____ day of ______________, 2007.

                              PIONEER NATURAL RESOURCES COMPANY

                              By:  _______________________________________
                                   Mark Berg
                                   Executive Vice President and General Counsel