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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001507929-10-000003.txt : 20101227
<SEC-HEADER>0001507929-10-000003.hdr.sgml : 20101224
<ACCEPTANCE-DATETIME>20101227160812
ACCESSION NUMBER:		0001507929-10-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101222
FILED AS OF DATE:		20101227
DATE AS OF CHANGE:		20101227

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NEUGEBAUER TOBY R
		CENTRAL INDEX KEY:			0001098464

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35010
		FILM NUMBER:		101274281

	MAIL ADDRESS:	
		STREET 1:		777 WALKER
		STREET 2:		2530 TWO SHELL PLAZA
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			QR Energy, LP
		CENTRAL INDEX KEY:			0001502012
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				900613069
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1401 MCKINNEY STREET
		STREET 2:		SUITE 2400
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77010
		BUSINESS PHONE:		713-452-2230

	MAIL ADDRESS:	
		STREET 1:		1401 MCKINNEY STREET
		STREET 2:		SUITE 2400
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77010
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-12-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001502012</issuerCik>
        <issuerName>QR Energy, LP</issuerName>
        <issuerTradingSymbol>QRE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001098464</rptOwnerCik>
            <rptOwnerName>NEUGEBAUER TOBY R</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1401 MC KINNEY ST.</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2400</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77010</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common units</value>
            </securityTitle>
            <transactionDate>
                <value>2010-12-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>0</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common units</value>
            </securityTitle>
            <transactionDate>
                <value>2010-12-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>11297737</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11297737</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common units</value>
                <footnoteId id="F4"/>
            </securityTitle>
            <transactionDate>
                <value>2010-12-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>0</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Subordinated units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2010-12-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>7145866</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common units</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7145866</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7145866</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Reporting Person serves on the board of directors of, and holds an indirect membership interest in, QA Global GP, LLC, which is the general partner of QA Holdings, LP, which is the sole member of QA GP, LLC, which is the general partner of The Quantum Aspect Partnership, LP (&quot;QAP&quot;), which is the general partner of each of the Fund Entities.  The Reporting Person disclaims beneficial ownership of the common and subordinated units owned by the Fund Entities in excess of his indirect pecuniary interest in the common and subordinated units.  This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such common or subordinated units for purposes of Section 16 or for any other purpose.</footnote>
        <footnote id="F2">In connection with the closing of the Partnership's initial public offering, QAP's 99.9% limited partner interest in the Partnership was redeemed for $999.</footnote>
        <footnote id="F3">In connection with the Partnership's initial public offering, Quantum Resources A1, LP (&quot;QRA&quot;), Quantum Resources B, LP (&quot;QRB&quot;), Quantum Resources C, LP (&quot;QRC&quot;), QAB Carried WI, LP (&quot;QAB&quot;), QAC Carried WI, LP (&quot;QAC&quot;) and Black Diamond Resources, LLC (&quot;Black Diamond,&quot; and together with QRA, QRB, QRC, QAB and QAC, collectively, the &quot;Fund Entities&quot;) contributed certain oil and natural gas properties to the Partnership in exchange for (i) the Partnership's assumption of approximately $200 million of indebtedness, (ii) a distribution of $300 million, (iii) 11,297,737 common units and (iv) 7,145,866 subordinated units.</footnote>
        <footnote id="F4">The Reporting Person controls QR Holdings (QRE), LLC, which holds a 50% membership interest in QRE GP, LLC, which is the general partner of the Issuer (the &quot;General Partner&quot;).  The General Partner owns a 0.1% general partner interest in the Partnership.  The Reporting Person disclaims beneficial ownership of such general partner interest in excess of his indirect pecuniary intrest in such membership interest in the General Partner.  This report shall not be deemed an admission that the Reporting Person is the beneficial owner of such general partner interest for purposes of Section 16 or for any other purpose.</footnote>
        <footnote id="F5">Each subordinated unit will convert to one common unit at the expiration of the subordination period, which will occur on the later to occur of December 22, 2012 and such date as all arrearages of distributions of the minimum quarterly distribution on all common units have been eliminated.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Gregory S. Roden on behalf of Toby R. Neugebauer</signatureName>
        <signatureDate>2010-12-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----