<SEC-DOCUMENT>0001140361-13-000608.txt : 20130103
<SEC-HEADER>0001140361-13-000608.hdr.sgml : 20130103
<ACCEPTANCE-DATETIME>20130103152956
ACCESSION NUMBER:		0001140361-13-000608
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20121231
FILED AS OF DATE:		20130103
DATE AS OF CHANGE:		20130103

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TENGASCO INC
		CENTRAL INDEX KEY:			0001001614
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				870267438
		STATE OF INCORPORATION:			TN
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		11121 KINGSTON PIKE
		STREET 2:		SUITE E
		CITY:			KNOXVILLE
		STATE:			TN
		ZIP:			37934
		BUSINESS PHONE:		865-675-1554

	MAIL ADDRESS:	
		STREET 1:		11121 KINGSTON PIKE
		STREET 2:		SUITE E
		CITY:			KNOXVILLE
		STATE:			TN
		ZIP:			37934

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SSB Ventures LLC
		CENTRAL INDEX KEY:			0001565629
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15555
		FILM NUMBER:		13506312

	BUSINESS ADDRESS:	
		STREET 1:		11121 KINGSTON PIKE
		STREET 2:		SUITE E
		CITY:			KNOXVILLE
		STATE:			TN
		ZIP:			37934
		BUSINESS PHONE:		865-675-1554

	MAIL ADDRESS:	
		STREET 1:		11121 KINGSTON PIKE
		STREET 2:		SUITE E
		CITY:			KNOXVILLE
		STATE:			TN
		ZIP:			37934
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2012-12-31</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001001614</issuerCik>
        <issuerName>TENGASCO INC</issuerName>
        <issuerTradingSymbol>TGC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001565629</rptOwnerCik>
            <rptOwnerName>SSB Ventures LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11121 KINGSTON PIKE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE E</rptOwnerStreet2>
            <rptOwnerCity>KNOXVILLE</rptOwnerCity>
            <rptOwnerState>TN</rptOwnerState>
            <rptOwnerZipCode>37934</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16376321</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The securities were purchased by the Reporting Person from Peter E. Salas, Chairman of the Board of the Company (218,000) shares; Jeffrey R. Bailey, Chief Executive Officer and a Director of the Company (500,000 shares); Cary V. Sorensen, Vice-President, General Counsel and Secretary of the Company (200,000 shares); and Dolphin Offshore Partners. L.P., which prior to the purchase was the largest shareholder of the Company. Peter E. Salas is the sole shareholder and controlling person of Dolphin Mgmt. Services, Inc., the managing general partner of Dolphin Offshore Partners, L.P. (15,458,321 shares) (hereinafter. Messrs. Salas, Bailey, and Sorensen and Dolphin Offshore Partners, L.P. are referred to collectively as the &quot;Sellers&quot;). The Sellers are the sole members of the Reporting Person, SSB Ventures LLC. Each of the Sellers retains the power to direct the voting by SSB Ventures LLC of the shares that each of the Sellers re</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>s/Cary V. Sorensen, Member SSB Ventures LLC</signatureName>
        <signatureDate>2013-01-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
