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


                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


      Date of Report (Date of earliest event reported): September 28, 2004




                        Pioneer Natural Resources Company
             ------------------------------------------------------
             (Exact name of Registrant as specified in its charter)



          Delaware                    1-13245                75-2702753
----------------------------        ------------        -------------------
(State or other jurisdiction        (Commission          (I.R.S. Employer
      of incorporation)             File Number)        Identification No.)



5205 N. O'Connor Blvd., Suite 900, Irving, Texas                75039
------------------------------------------------             ----------
   (Address of principal executive offices)                  (Zip Code)


                                 (972) 444-9001
              ----------------------------------------------------
              (Registrant's telephone number, including area code)



                                 Not applicable
          -------------------------------------------------------------
          (Former name or former address, if changed since last report)


Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions:

[ ]   Written communications  pursuant to Rule 425 under the  Securities Act (17
      CFR 230.425)
[ ]   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)
[ ]   Pre-commencement  communications  pursuant  to  Rule  14d-2(b)  under  the
      Exchange Act (17 CFR 240.14d-2(b))
[ ]   Pre-commencement  communications  pursuant  to  Rule  13e-4(c)  under  the
      Exchange Act (17 CFR 240.13e-4(c))








                        PIONEER NATURAL RESOURCES COMPANY

                                TABLE OF CONTENTS


                                                                           Page

Item 1.01.  Entry into a Material Definitive Agreement...................   3

Item 2.01.  Completion of Acquisition or Disposition of Assets...........   3

Item 2.03.  Creation of a Direct Financial Obligation or an Obligation
            under an Off-Balance Sheet Arrangement of a Registrant.......   4

Item 5.02.  Departure of Directors or Principal Officers; Election of
            Directors; Appointment of Principal Officers.................   4

Item 9.01.  Financial Statements and Exhibits

            (a)   Financial Statements of Businesses Acquired............   4

            (b)   Pro Forma Financial Information........................   5

            (c)   Exhibits...............................................   5

Signature................................................................   6

Exhibit Index............................................................   7



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                        PIONEER NATURAL RESOURCES COMPANY




Item 1.01.   Entry into a Material Definitive Agreement

     On September 28, 2004, Pioneer Natural Resources Company (the "Company") as
the Borrower;  JPMorgan Chase Bank as the Administrative Agent; Bank of America,
N.A.,  Barclays Bank PLC, Wells Fargo Bank,  National  Association  and Wachovia
Bank, National  Association,  as the Co-Documentation  Agents; and certain other
lenders  entered  into a $900  million  364-Day  Credit  Agreement,  dated as of
September  28,  2004  (the  "364-Day  Credit  Agreement"),  the  terms  of which
essentially mirror the Company's  $700,000,000 5-Year Revolving Credit Agreement
dated as of December 16, 2003 (the "Revolving  Credit  Agreement").  The 364-Day
Credit  Agreement  bears a variable  annual rate of  interest  equal to the six-
month  LIBOR  rate  plus a 75 basis  point  LIBOR  margin.  The  364-Day  Credit
Agreement  was used to  finance  the cash  costs of the  Company's  merger  (the
"Merger") with Evergreen Resources,  Inc. ("Evergreen") as described below under
"Item 2.01  Completion of Acquisition  or  Disposition  of Assets".  The 364-Day
Credit Agreement is attached hereto as exhibit 99.2.

     Many of the  parties  involved  in the 364-Day  Credit  Agreement  are also
parties to the Company's Revolving Credit Agreement and are often counterparties
to the Company's derivative instruments.

     As a result of the Merger  described  below under "Item 2.01  Completion of
Acquisition or Disposition of Assets",  the Company will assume Evergreen's $100
million of 4.75% Senior  Convertible Notes due 2021 (the "4.75% Notes") and $200
million of Evergreen's  5.875% Senior  Subordinated  Notes due 2012 (the "5.875%
Notes").  Associated  therewith,  the Company issued: (i) the First Supplemental
Indenture dated  September 28, 2004 with respect to Evergreen's  indenture dated
March 10, 2004, relating to the 5.875% Notes, that is attached hereto as exhibit
4.5, (ii) the First Supplemental Indenture dated September 28, 2004 with respect
to Evergreen's  indenture dated December 18, 2001,  relating to the 4.75% Notes,
that is  attached  hereto  as  exhibit  4.6 and (iii)  the  Second  Supplemental
Indenture dated  September 28, 2004 with respect to Evergreen's  indenture dated
December  18,  2001,  relating to the 4.75%  Notes,  that is attached  hereto as
exhibit 4.7.

Item 2.01.   Completion of Acquisition or Disposition of Assets

     On September 28, 2004,  the Company  issued a news release that is attached
hereto as exhibit  99.1.  In the news  release,  the Company  announced  (i) the
Merger has been  consummated  as set forth in the  Agreement and Plan of Merger,
dated May 3, 2004 (the "Merger Agreement"),  among the Company, Evergreen and BC
Merger Sub,  Inc., a  wholly-owned  subsidiary  of the Company  ("Merger  Sub"),
resulting in Evergreen  becoming a  wholly-owned  subsidiary  of the Company and
(ii) the appointment of Mr. Mark S. Sexton,  Evergreen's  former Chairman of the
Board,  President and Chief Executive  Officer,  and Mr. Andrew D. Lundquist,  a
former Evergreen director,  to the Company's board of directors as a Class I and
Class III director, respectively.

     As a result of the  Merger,  the Company has  acquired  all of  Evergreen's
assets  and  assumed  all of  Evergreen's  liabilities.  Pursuant  to the Merger
Agreement,  holders of approximately  43.6 million shares of Evergreen's  common
stock were entitled to elect, prior to the completion of the Merger, among three
types of  consideration  for each share of Evergreen's  common stock: (1) 1.1635
shares of the Company's common stock,  subject to allocation and proration;  (2)
$39.00 cash,  subject to allocation and proration;  or (3) 0.58175 shares of the
Company's common stock and $19.50 in cash. Evergreen's  stockholders who did not
make an election  prior to  completion of the Merger were deemed to have elected
to receive  0.58175 shares of the Company's  common stock and $19.50 in cash per
share of  Evergreen's  common  stock.  This  represented  a price  per  share of
Evergreen's  common stock of $39.00,  based on the Company's last reported sales
price on May 3, 2004 (the date of the Merger  Agreement) of $33.52 per share. In
addition, Evergreen's stockholders will receive additional cash consideration of
$0.48 per share,  which  represents the pro rata gross proceeds less transaction
costs from Evergreen's sale of its Kansas properties on September 27, 2004.

     The aggregate  number of shares of Pioneer common stock to be issued in the
Merger is approximately 25.4 million and the aggregate amount of cash to be paid
in the Merger is approximately  $871.4 million,  including the consideration for
the  Kansas  properties.  The  elections  made and  deemed  made by  Evergreen's
stockholders  to  receive  shares  of  the  Company's  common  stock  as  Merger


                                       3







                        PIONEER NATURAL RESOURCES COMPANY



consideration  exceeded the maximum number of the Company's  shares  issuable in
the  Merger  pursuant  to the  Merger  Agreement.  Accordingly,  the  holders of
Evergreen's  common stock who made  elections to receive all cash will  receive,
for each share of Evergreen's  common stock,  $39.00 in cash plus the $0.48 cash
payment with respect to the Kansas properties, and holders who made elections to
receive all common stock will  instead  receive,  for each share of  Evergreen's
common stock,  0.83746  shares of the Company's  common stock and $10.93 in cash
plus the $0.48 cash payment with respect to the Kansas  properties.  Pursuant to
the terms of the Merger Agreement, stockholders who elected to receive, for each
share of Evergreen's common stock,  0.58175 shares of the Company's common stock
and  $19.50  in cash,  plus the  $0.48 per share  cash  payment  for the  Kansas
properties, will receive the form of payment that they elected, and stockholders
who made no election will receive  0.58175 shares of the Company's  common stock
and  $19.50  in  cash,  plus  the  $0.48  payment  with  respect  to the  Kansas
properties.

     The  Company  financed  the  cash  consideration  for  the  Merger  through
borrowings on the 364-Day Credit Agreement.

     A description of the Merger,  including the related  interests of directors
and  officers of the  Company  and  Evergreen,  was  previously  reported in the
Company's  joint proxy  statement/prospectus  that forms a part of the Company's
Registration  Statement on Form S-4, as amended, File No. 333-116434,  which was
filed with the  Securities  and  Exchange  Commission  (the "SEC") on August 27,
2004.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under
           an Off-Balance Sheet Arrangement of a Registrant

     The  information  described  above  under  "Item 1.01 Entry into a Material
Definitive Agreement" is incorporated herein by reference.

Item 5.02. Departure of Directors or Principal Officers; Election of
           Directors; Appointment of Principal Officers

     As provided above under "Item 2.01 Completion of Acquisition or Disposition
of Assets",  Messrs.  Mark S. Sexton and Andrew D. Lundquist have been appointed
to the  Company's  board  of  directors  as a Class I and  Class  III  director,
respectively.  Mr.  Lundquist will be named to the  Compensation  and Management
Development Committee of the Company's board of directors.

     Information  pertaining to the related  interests of directors and officers
of the Company and Evergreen  was  previously  reported in the  Company's  joint
proxy  statement/prospectus  that  forms  a part of the  Company's  Registration
Statement on Form S-4, as amended, File No. 333-116434, which was filed with the
SEC on August 27, 2004.

Item 9.01. Financial Statements and Exhibits

       (a) Financial Statements of Businesses Acquired

           Audited Consolidated Financial Statements of Evergreen as of December
           31, 2003 and 2002 and for the years ended December 31, 2003, 2002 and
           2001 were previously  reported in  Evergreen's Annual Report  on Form
           10-K for the year ended December 31, 2003, File No. 001-13571,  which
           was filed with the SEC on February 27, 2004.

           Consolidated  Financial Statements of  Evergreen as of June 30,  2004
           and for the three and  six month periods ended June 30, 2004 and 2003
           were previously reported in Evergreen's Quarterly Report on Form 10-Q
           for the three  months ended June 30, 2004,  File No. 001-13571, which
           was filed with the SEC on August 3, 2004.



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                        PIONEER NATURAL RESOURCES COMPANY



       (b) Pro Forma Financial Information

           Unaudited Pro Forma Combined Financial Statements as of June 30, 2004
           and for the six  months ended June 30,  2004 and for  the year  ended
           December  31,   2003  were   previousl  reported  in  the   Company's
           Registration Statement on Form S-4, as amended,  File No. 333-116434,
           which wa filed with the SEC on August 27, 2004.

       (c) Exhibits

           2.1  Agreement  and  Plan of Merger,  dated  May 3,  2004,  among the
                Company,  Evergreen and Merger Sub (incorporated by reference to
                Exhibit 2.1  to the  Company's Current Report on Form 8-K,  File
                No. 1-13245, filed with the SEC on May 3, 2004).

           4.1  Indenture  dated as  of March  10,  2004,  among  Evergreen  and
                Wachovia Bank,  National  Association,  as trustee,  relating to
                Evergreen's   5.875%   Senior   Subordinated  Notes   due   2012
                (incorporated  by  reference  to  Exhibit  4.1  to   Evergreen's
                Quarterly  Report on  Form 1Q  for the  quarter ended  March 31,
                2004).

           4.2  Form of  Evergreen's 5.875%  Senior Subordinated  Notes due 2012
                (incorporated  by  reference  to  Exhibit  4.3  to   Evergreen's
                Registration  Statement  on  Form  S-4,  dated  June  28,  2004,
                Registration No. 333-116201).

           4.3  Indentured dated as of  December 18,  2001,  among Evergreen and
                First Union National Bank,  as trustee,  relating to Evergreen's
                4.75%   Senior   Convertible  Notes   due   December   15,  2021
                (incorporated by reference to Exhibit 4.3 to Evergreen's  Annual
                Report on Form 10 for the year ended December 31, 2001).

           4.4  Form of Evergreen's 4.75%  Senior Convertible Notes due December
                15,  2021  (included as  Exhibit A  to the  indenture identified
                above as Exhibit 4.3).

           4.5  First Supplemental Indenture  dated  as of  September 28,  2004,
                among  Pioneer  Evergreen  Properties,  LLC   (as  successor  to
                Evergreen) and Wachovia Bank, National Association,  as trustee,
                with respect  to the indenture  identified above as Exhibit 4.1.

           4.6  First  Supplemental Indenture  dated as  of  September 28, 2004,
                among  the  Company,  Evergreen  and  Wachovia  Bank,   National
                Association (as successor to  First  Union  National  Bank),  as
                trustee,  with  respect  to the  indenture  identified  above as
                Exhibit 4.3.

           4.7  Second  Supplemental Indenture  dated as of September 28,  2004,
                among  the  Company,   Pioneer  Evergreen  Properties,  LLC  (as
                successor to Evergreen)  and Wachovia Bank, National Association
                (as successor to First Union National Bank),  as  trustee,  with
                respect to the indenture identified above as Exhibit 4.3.

          99.1  News Release dated September 28, 2004.

          99.2  364-Day Credit Agreement  dated as of  September 28,  2004 among
                the Company,  as  the  Borrower;  JPMorgan  Chase  Bank  as  the
                Administrative Agent;  Bank of America N.A.,  Barclays Bank PLC,
                Wells  Fargo  Bank,  National  Association  and  Wachovia  Bank,
                National Association as the Co-Documentation  Agents and certain
                other lenders.



                                       5







                        PIONEER NATURAL RESOURCES COMPANY



                                S I G N A T U R E

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                                PIONEER NATURAL RESOURCES COMPANY




Date:  October 1, 2004       By:    /s/ Richard P. Dealy
                                     ---------------------------------
                                     Richard P. Dealy
                                     Vice President and Chief Accounting Officer



                                       6








                                          PIONEER NATURAL RESOURCES COMPANY


                                                   EXHIBIT INDEX

Exhibit No.      Description

    2.1          Agreement  and Plan  of Merger,  dated May 3,  2004,  among the
                 Company, Evergreen and Merger Sub (incorporated by reference to
                 Exhibit 2.1 to the Company's  Current Report on Form 8-K,  File
                 No. 1-13245, filed with the SEC on May 3, 2004).

    4.1          Indenture  dated  as  of March  10,  2004,  among Evergreen and
                 Wachovia Bank, National  Association,  as trustee,  relating to
                 Evergreen's  5.875%   Senior  Subordinated   Notes   due   2012
                 (incorporated  by  reference  to  Exhibit  4.1  to  Evergreen's
                 Quarterly Report on  Form 10-Q for the quarter  ended March 31,
                 2004).

    4.2          Form of Evergreen's  5.875% Senior  Subordinated Notes due 2012
                 (incorporated  by  reference  to  Exhibit  4.3  to  Evergreen's
                 Registration  Statement  on  Form  S-4,  dated  June 28,  2004,
                 Registration No. 333-116201).

    4.3          Indenture dated  as of December 18,  2001, among  Evergreen and
                 First Union National Bank, as trustee,  relating to Evergreen's
                 4.75%  Senior   Convertible  Notes   due   December  15,   2021
                 (incorporated  by  reference  to  Exhibit  4.3  to  Evergreen's
                 Annual Report on  Form 10-K  for  the year  ended  December 31,
                 2001).

    4.4          Form of Evergreen's 4.75% Senior Convertible Notes due December
                 15, 2021  (included as  Exhibit A to the  indenture  identified
                 above as Exhibit 4.3).

    4.5(a)       First Supplemental  Indenture dated  as of  September 28, 2004,
                 among  Pioneer  Evergreen  Properties,  LLC  (as  successor  to
                 Evergreen) and Wachovia Bank, National Association, as trustee,
                 with respect to the indenture identified above as Exhibit 4.1.

    4.6(a)       First Supplemental  Indenture dated  as of  September 28, 2004,
                 among  the  Company,  Evergreen  and  Wachovia  Bank,  National
                 Association  (as successor to First  Union National  Bank),  as
                 trustee,  with  respect  to the  indenture  identified above as
                 Exhibit 4.3.

    4.7(a)       Second Supplemental Indenture dated as of  September 28,  2004,
                 among  the  Company,  Pioneer  Evergreen  Properties,  LLC  (as
                 successor to Evergreen) and Wachovia Bank, National Association
                 (as successor to  First Union  National Bank), as trustee, with
                 respect to the indenture identified above as Exhibit 4.3.

  99.1(a)        News Release dated September 28, 2004.

  99.2(a)        364-Day Credit Agreement  dated as of September 28,  2004 among
                 the  Company,  as  the  Borrower;  JPMorgan Chase  Bank as  the
                 Administrative Agent; Bank of America, N.A., Barclays Bank PLC,
                 Wells  Fargo  Bank,  National  Association and  Wachovia  Bank,
                 National Association as the Co-Documentation Agents and certain
                 other lenders.
-------------
(a) filed herewith




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