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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 CmYoUAdNt4VyIf9hRLy7wedIeMPU9Ni9kEc773HADtPkDILpCLDBVMnvcu3vVsSl
 cm3iJnBqHf8ofUot5yq8Ag==

<SEC-DOCUMENT>9999999997-05-017682.txt : 20050411
<SEC-HEADER>9999999997-05-017682.hdr.sgml : 20050411
<ACCEPTANCE-DATETIME>20050411101358
<PAPER>
ACCESSION NUMBER:		9999999997-05-017682
CONFORMED SUBMISSION TYPE:	ARS
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20041231
FILED AS OF DATE:		20050408
DATE AS OF CHANGE:		20050411
EFFECTIVENESS DATE:		20050408

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:		ARS
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13245
		FILM NUMBER:		05050668

	BUSINESS ADDRESS:	
		STREET 1:		900 WILLIAMS SQUARE WEST
		STREET 2:		5205 N OCONNOR BLVD
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
		BUSINESS PHONE:		9724449001

	MAIL ADDRESS:	
		STREET 1:		900 WILLIAMS SQUARE WEST
		STREET 2:		5205 N OCONNOR BLVD
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
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<FILENAME>9999999997-05-017682.paper
<DESCRIPTION>AUTO-GENERATED PAPER DOCUMENT
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This document was generated as part of a paper submission.
Please reference the Document Control Number 05050668 for access to the original document.
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