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): April 18, 2005




                        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 9.01.  Financial Statements and Exhibits

            (c)   Exhibits...........................................      3

Signature............................................................      4

Exhibit Index........................................................      5




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                        PIONEER NATURAL RESOURCES COMPANY

Item 1.01.   Entry into a Material Definitive Agreement

     On April 19, 2005, Pioneer Natural Resources Company (the "Company") issued
a news release that is attached hereto as exhibit 99.1. In the news release, the
Company  announced  that  it has  sold  to  Wolfcamp  Oil  and  Gas  Trust  (the
"Purchaser") less than one percent of its total proved reserves,  or 7.3 million
barrels  of  oil  equivalent  of  proved  reserves,  by  means  of a  volumetric
production payment ("VPP") for total proceeds of $300 million and the assumption
of the Company's obligations under certain derivative hedge agreements, referred
to below. The production  payment purchase and sale agreement  governing the VPP
transaction is attached hereto as exhibit 99.2.

     The  Purchaser is a subsidiary  and/or  affiliate of Barclays Bank PLC. The
Company periodically enters into derivative agreements with Barclays Bank PLC to
hedge  commodity price risk and interest rate risk. In accordance with the terms
of the VPP, the Purchaser  assumed the Company's  rights and  obligations  under
certain derivative  agreements.  The counterparty to the derivative  obligations
assumed by the Purchaser is Barclays Bank PLC. Barclays Bank PLC is also a party
to the Company's  $700 million 5-Year  Revolving  Credit  Agreement  dated as of
December 16, 2003, as amended,  and to the Company's $900 million 364-Day Credit
Agreement dated as of September 28, 2004, as amended.

     The VPP represents limited term overriding royalty interests in oil and gas
reserves which: (i) entitle the Purchaser to receive  production  volumes over a
period of time from  specific  lease  interests;  (ii) are free and clear of all
associated  future  production  costs  and  capital   expenditures;   (iii)  are
nonrecourse to the Company (i.e., the Purchaser's only recourse is to the assets
acquired);  (iv) transfers  title to the Purchaser and (v) allows the Company to
retain the assets after the VPP's volumetric obligations have been satisfied.

     The VPP sells 6.0 billion cubic feet of Spraberry field gas volumes over an
expected  32-month  term  beginning  in May  2005  and 6.2  million  barrels  of
Spraberry field oil volumes over an expected five-year term beginning in January
2006.

Item 9.01.   Financial Statements and Exhibits

       (c)   Exhibits

             99.1   News Release dated April 19, 2005.
             99.2   Production  Payment Purchase and  Sale Agreement dated as of
                    April 18, 2005 among Pioneer Natural Resources USA, Inc. and
                    Pioneer Natural Resources Properties LP,  as the Seller, and
                    Wolfcamp Oil and Gas Trust, as the Buyer.



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                        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:  April 21, 2005         By:    /s/ Darin G. Holderness
                                   --------------------------------------------
                                   Darin G. Holderness
                                   Vice President and Chief Accounting Officer



                                       4








                        PIONEER NATURAL RESOURCES COMPANY

                                  EXHIBIT INDEX


Exhibit No.     Description

   99.1(a)      News Release dated April 18, 2005.
   99.2(a)      Production Payment Purchase and Sale Agreement dated as of April
                19,  2005 among Pioneer Natural Resources USA,  Inc. and Pioneer
                Natural Resources Properties LP, as the Seller, and Wolfcamp Oil
                and Gas Trust, as the Buyer.

-------------
(a) filed herewith



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