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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001209191-10-026957.txt : 20100511
<SEC-HEADER>0001209191-10-026957.hdr.sgml : 20100511
<ACCEPTANCE-DATETIME>20100511172715
ACCESSION NUMBER:		0001209191-10-026957
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100507
FILED AS OF DATE:		20100511
DATE AS OF CHANGE:		20100511

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHEATWOOD CHRIS J
		CENTRAL INDEX KEY:			0001203784

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34032
		FILM NUMBER:		10822016

	MAIL ADDRESS:	
		STREET 1:		5205 N O CONNOR BLVD
		STREET 2:		SUITE 900
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Pioneer Southwest Energy Partners L.P.
		CENTRAL INDEX KEY:			0001407463
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				260388421
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5205 N. O'CONNOR BLVD., SUITE 200
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
		BUSINESS PHONE:		(972) 444-9001

	MAIL ADDRESS:	
		STREET 1:		5205 N. O'CONNOR BLVD., SUITE 200
		CITY:			IRVING
		STATE:			TX
		ZIP:			75039
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    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Mark H. Kleinman, Attorney-in-Fact For
Chris J. Cheatwood</signatureName>
        <signatureDate>2010-05-11</signatureDate>
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