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): February 6, 2007

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

                        PIONEER NATURAL RESOURCES COMPANY
             (Exact name of registrant as specified in its charter)


           Delaware                     1-13245                 75-2702753
       (State or other                (Commission            (I.R.S. Employer
jurisdiction of incorporation)        File Number)        Identification Number)

    5205 N. O'Connor Blvd                                         75039
          Suite 200                                             (Zip code)
        Irving, Texas
    (Address of principal
     executive offices)


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

                                 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 2.02.    Results of Operations and Financial Condition...........     3

Item 9.01.    Financial Statements and Exhibits.

              (d)   Exhibits..........................................     3

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

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







                                       2





Item 2.02.  Results of Operations and Financial Condition.

     The information in this document includes  forward-looking  statements that
are made  pursuant  to the Safe  Harbor  Provisions  of the  Private  Securities
Litigation  Reform  Act of 1995.  Forward-looking  statements  and the  business
prospects of Pioneer Natural  Resources Company (the "Company") are subject to a
number of risks and uncertainties that may cause the Company's actual results in
future periods to differ materially from the forward-looking  statements.  These
risks and uncertainties include,  among other things,  volatility of oil and gas
prices,  product  supply  and  demand,   competition,   the  ability  to  obtain
environmental  and  other  permits  and the  timing  thereof,  other  government
regulation  or action,  third  party  approvals,  international  operations  and
associated  international  political and economic instability,  litigation,  the
costs  and  results  of  drilling  and  operations,   availability  of  drilling
equipment,  the Company's  ability to replace  reserves,  implement its business
plans, or complete its development projects as scheduled,  access to and cost of
capital,  uncertainties about estimates of reserves,  the assumptions underlying
production  forecasts,  quality of  technical  data,  environmental  and weather
risks,  acts of war or  terrorism.  These and other risks are  described  in the
Company's  2005 Annual  Report on Form 10-K and  Quarterly  Reports on Form 10-Q
that are available from the Company or the United States Securities and Exchange
Commission.  The Company  undertakes no duty to publicly update these statements
except as required by law.

     On February 6, 2007,  the Company  issued the news release,  with financial
statements and schedules,  that is attached  hereto as exhibit 99.1. In the news
release,  the Company announced  financial and operating results for the quarter
and year ended December 31, 2006, provided an operations update and provided the
Company's  financial and operational outlook for future periods based on current
expectations.

     On  February  6, 2007,  the  Company  also  issued the news  release,  with
supplemental  schedule,  that is attached  hereto as exhibit  99.2.  In the news
release,  the Company announced its proved reserves as of December 31, 2006, and
related costs incurred for oil and gas producing  activities ("Costs Incurred").
The Company also announced reserve additions,  reserve  replacement  percentages
and  finding  and  development  costs  ("F&D  Costs")  for the one -, three- and
five-year periods ended December 31, 2006. The supplemental schedule attached to
the news release  provides  unaudited  supplemental  information  regarding  the
Company's  proved  reserves as of and for the year ended  December 31, 2006, and
the Company's Costs Incurred,  reserve replacement  percentage and F&D Costs for
the year ended  December 31, 2006.  It also provides  explanations  of the terms
"reserve  replacement  percentage" and "F&D Costs" as used by the Company in the
news release and supplemental schedule.

Item 9.01.    Financial Statements and Exhibits.

         (d) Exhibits.

               99.1 --  News  release, dated  February 6,  2007, titled "Pioneer
                        Reports  Fourth Quarter  and Full Year 2006 Results" and
                        financial  statements  and  schedules  attached  to news
                        release.

               99.2 --  News release,  dated February  6, 2007,  titled "Pioneer
                        Reports  Year-End 2006  Reserves and  Finding Costs" and
                        supplemental schedule attached to news release.


                                       3




                                   SIGNATURES

     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



                                     /s/ Darin G. Holderness
                                     -------------------------------------------
                                     Darin G. Holderness
                                     Vice President and Chief Accounting Officer


Dated: February 6, 2007






                                       4











                                  EXHIBIT INDEX



   Exhibit
   Number                             Exhibit Title
   -------                            -------------

     99.1(a)      News release, dated February 6, 2007, titled  "Pioneer Reports
                  Fourth  Quarter and  Full  Year  2006  Results"  and financial
                  statements and schedules attached to news release.

     99.2(a)      News release,  dated February 6, 2007, titled "Pioneer Reports
                  Year-End  2006 Reserves and  Finding  Costs"  and supplemental
                  schedule attached to news release.

   -----------

   (a) Furnished herewith.






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