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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 NQeKAMjIbwEDrvI6GNlEZUg/le+CO505zHVs2wq0S7TsNdw9L5rwirTsZrSgz/sv
 6o8JpWSINe+rsrIjW5zgEw==

<SEC-DOCUMENT>0001174668-04-000005.txt : 20040108
<SEC-HEADER>0001174668-04-000005.hdr.sgml : 20040108
<ACCEPTANCE-DATETIME>20040108161829
ACCESSION NUMBER:		0001174668-04-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040106
FILED AS OF DATE:		20040108

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BERRY PETROLEUM CO
		CENTRAL INDEX KEY:			0000778438
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				770079387
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5201 TRUXTUN AVENUE,
		STREET 2:		SUITE 300
		CITY:			BAKERSFIELD
		STATE:			CA
		ZIP:			93309-0640
		BUSINESS PHONE:		661 616-3900

	MAIL ADDRESS:	
		STREET 1:		BERRY PETROLEUM CO
		STREET 2:		5201 TRUXTUN AVENUE, SUITE 300
		CITY:			BAKERSFIELD
		STATE:			CA
		ZIP:			93309-0640

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			REHKOPF BRIAN L
		CENTRAL INDEX KEY:			0001174668

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09735
		FILM NUMBER:		04515690

	BUSINESS ADDRESS:	
		STREET 1:		C/O BERRY PETROLEUM CO
		STREET 2:		5201 TRUXTUN AVE STE 300
		CITY:			BAKERSFEILD
		STATE:			CA
		ZIP:			93309
		BUSINESS PHONE:		6616163828

	MAIL ADDRESS:	
		STREET 1:		C/O BERRY PETROLEUM CO
		STREET 2:		5201 TRUXTUN AVE STE 300
		CITY:			BAKERSFIELD
		STATE:			CA
		ZIP:			93309
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2004-01-06</periodOfReport>
    <issuer>
        <issuerCik>0000778438</issuerCik>
        <issuerName>BERRY PETROLEUM CO</issuerName>
        <issuerTradingSymbol>BRY</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001174668</rptOwnerCik>
            <rptOwnerName>REHKOPF BRIAN L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BERRY PETROLEUM COMPANY</rptOwnerStreet1>
            <rptOwnerStreet2>5201 TRUXTUN AVE., SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>BAKERSFIELD</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>93309</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Vice President of Engineering</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Class A Common Stock</value></securityTitle><transactionDate><value>2004-01-06</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>10000</value><footnoteId id="F1"/></transactionShares><transactionPricePerShare><value>12.50</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>28700</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></d
irectOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Class A Common Stock</value></securityTitle><transactionDate><value>2004-01-06</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>F</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>7630</value><footnoteId id="F1"/></transactionShares><transactionPricePerShare><value>20.49</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>21070</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><
nonDerivativeHolding><securityTitle><value>Class A Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2055</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>Held in 401(k) Plan</value></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeHolding><securityTitle><value>Nonstatutory Stock Option (Right to Buy) NSO</value></securityTitle><conversionOrExercisePrice><value>15.50</value></conversionOrExercisePrice><exerciseDate><value>1998-06-02</value></exerciseDate><expirationDate><value>2007-06-02</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>40000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>4
0000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Nonstatutory Stock Option (Right to Buy) NSO</value></securityTitle><conversionOrExercisePrice><value>19.375</value></conversionOrExercisePrice><exerciseDate><value>1998-12-05</value></exerciseDate><expirationDate><value>2007-12-05</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>20000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>20000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownership
Nature></derivativeHolding><derivativeTransaction><securityTitle><value>Nonstatutory Stock Option (Right to Buy) NSO</value></securityTitle><conversionOrExercisePrice><value>12.50</value></conversionOrExercisePrice><transactionDate><value>2004-01-06</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>10000</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>1999-12-04</value></exerciseDate><expirationDate><value>2008-12-04</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>10000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts
><sharesOwnedFollowingTransaction><value>10000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction><derivativeHolding><securityTitle><value>Nonstatutory Stock Option (Right to Buy) NSO</value></securityTitle><conversionOrExercisePrice><value>15.69</value></conversionOrExercisePrice><exerciseDate><value>2001-12-02</value></exerciseDate><expirationDate><value>2010-12-02</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>20000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>20000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwne
rship><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Nonstatutory Stock Option (Right to Buy) NSO</value></securityTitle><conversionOrExercisePrice><value>16.30</value></conversionOrExercisePrice><exerciseDate><value>2002-12-07</value></exerciseDate><expirationDate><value>2011-12-07</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>20000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>20000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Nonstatutory Stock Option (Right to Buy) NSO</value></securityTitle><conversionOrExercisePrice><value>16.
50</value></conversionOrExercisePrice><exerciseDate><value>2003-12-06</value></exerciseDate><expirationDate><value>2012-12-06</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>15000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>15000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Nonstatutory Stock Option (Right to Buy) NSO</value></securityTitle><conversionOrExercisePrice><value>19.94</value></conversionOrExercisePrice><exerciseDate><value>2004-12-05</value></exerciseDate><expirationDate><value>2013-12-05</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common S
tock</value></underlyingSecurityTitle><underlyingSecurityShares><value>20000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>20000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding></derivativeTable><footnotes><footnote id="F1">Exercise of Stock Options under the Company's 1994 Stock Option Plan in a transaction exempt under Rule 16B.</footnote></footnotes><remarks/><ownerSignature><signatureName>Kenneth A. Olson under Power of Attorney on file</signatureName><signatureDate>2004-01-08</signatureDate></ownerSignature></ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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