-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 MtmfSdxg3fGzWIiQpXfyiEkPrFpockkGyoVlQgipKXRPPIeNJ3DrtTs1hWwRtkF9
 PrYsF+L4+JZHiHiW2rRQ/g==

<SEC-DOCUMENT>9999999997-10-002358.txt : 20100303
<SEC-HEADER>9999999997-10-002358.hdr.sgml : 20100303
<ACCEPTANCE-DATETIME>20100303115812
<PAPER>
ACCESSION NUMBER:		9999999997-10-002358
CONFORMED SUBMISSION TYPE:	NO ACT
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100108
FILED AS OF DATE:		20100212
DATE AS OF CHANGE:		20100303
EFFECTIVENESS DATE:		20100212

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PIONEER NATURAL RESOURCES CO
		CENTRAL INDEX KEY:			0001038357
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				752702753
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		NO ACT
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13245
		FILM NUMBER:		10010587

	BUSINESS ADDRESS:	
		STREET 1:		200 WILLIAMS SQUARE WEST
		STREET 2:		5205 N OCONNOR BLVD
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
		BUSINESS PHONE:		9724449001

	MAIL ADDRESS:	
		STREET 1:		200 WILLIAMS SQUARE WEST
		STREET 2:		5205 N OCONNOR BLVD
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
</SEC-HEADER>
<DOCUMENT>
<TYPE>NO ACT
<SEQUENCE>1
<FILENAME>9999999997-10-002358.paper
<DESCRIPTION>AUTO-GENERATED PAPER DOCUMENT
<TEXT>
This document was generated as part of a paper submission.
Please reference the Document Control Number 10010587 for access to the original document.
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----