-----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,
 NyxLOpdDA70qoJ5lAmnp/D+dirI3ArPPtl2FXxx5Y6rn6iKq/D1i0enA1rW+lQP8
 Agv3Z/HSG1J+XB1aqyGdkw==

<SEC-DOCUMENT>0000072207-04-000031.txt : 20040202
<SEC-HEADER>0000072207-04-000031.hdr.sgml : 20040202
<ACCEPTANCE-DATETIME>20040202111740
ACCESSION NUMBER:		0000072207-04-000031
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040201
FILED AS OF DATE:		20040202

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NOBLE ENERGY INC
		CENTRAL INDEX KEY:			0000072207
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				730785597
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 GLENBOROUGH
		STREET 2:		SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77067
		BUSINESS PHONE:		2818723100

	MAIL ADDRESS:	
		STREET 1:		100 GLENBOROUGH
		STREET 2:		SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77067

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NOBLE AFFILIATES INC
		DATE OF NAME CHANGE:	20020426

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NOBLE AFFILIATES INC
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HEDRICK KIRBY L
		CENTRAL INDEX KEY:			0001188547

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07964
		FILM NUMBER:		04558066

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 1307
		CITY:			PINEDALE
		STATE:			WY
		ZIP:			82941
		BUSINESS PHONE:		3073672867

	MAIL ADDRESS:	
		STREET 1:		PO BOX 1307
		CITY:			PINEDALE
		STATE:			WY
		ZIP:			82941
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>f4100040040202_111456363.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-02-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000072207</issuerCik>
        <issuerName>NOBLE ENERGY INC</issuerName>
        <issuerTradingSymbol>NBL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001188547</rptOwnerCik>
            <rptOwnerName>HEDRICK KIRBY L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>100 GLENBOROUGH DR</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77067</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Noble Energy Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>44.2</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-02-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>44.2</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2005-02-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2014-02-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Noble Energy Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>Kirby Hedrick</signatureName>
        <signatureDate>2004-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Arnold Johnson Attorney in Fact for Kirby Hedrick</signatureName>
        <signatureDate>2004-02-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>James McElvany Attorney in Fact for Kirby Hedrick</signatureName>
        <signatureDate>2004-02-02</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----