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): January 24, 2001




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



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



1400 WILLIAMS SQUARE WEST, 5205 N. O'CONNOR BLVD., IRVING, TEXAS       75039
- ----------------------------------------------------------------     ---------
           (Address of principal executive offices)                  (Zip code)



       Registrant's Telephone Number, including area code : (972) 444-9001



                                 Not applicable
              (Former name, former address and former fiscal year,
                          if changed since last report)







                        PIONEER NATURAL RESOURCES COMPANY

                                TABLE OF CONTENTS


                                                                       Page

Item 7.  Financial Statements, Pro Forma Financial Information
          and Exhibits:

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

Item 9.  Regulation FD Disclosure..................................      3

Signatures.........................................................      4

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



                                       2






                        PIONEER NATURAL RESOURCES COMPANY



ITEM 7.     FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS

    (c)     Exhibits

            99.1   Press Release dated January 24, 2001

ITEM 9.     REGULATION FD DISCLOSURE

       On January 24, 2001,  Pioneer  Natural  Resources  Company issued a press
release  reporting the Company's  proved oil and gas reserves as of December 31,
2000;  and,  for  the  year  then  ended,  the  Company's  reserve   replacement
percentage,  finding  costs per  equivalent  barrel of added  reserves and costs
incurred for oil and gas  producing  activities.  The press  release is attached
hereto as Exhibit 99.1 and incorporated by reference herein.



                                       3








                        PIONEER NATURAL RESOURCES COMPANY

                               S I G N A T U R E S

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:   January 24, 2001       By:    /s/ RICH DEALY
                                    -----------------------------------
                                    Rich Dealy
                                    Vice President and Chief Accounting Officer



                                       4







                        PIONEER NATURAL RESOURCES COMPANY

                                  EXHIBIT INDEX


Exhibit No.             Description

   99.1*                Press Release dated January 24, 2001


- -------------
* filed herewith






                                       5