<SEC-DOCUMENT>0001209191-16-145315.txt : 20161006
<SEC-HEADER>0001209191-16-145315.hdr.sgml : 20161006
<ACCEPTANCE-DATETIME>20161006205438
ACCESSION NUMBER:		0001209191-16-145315
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20161004
FILED AS OF DATE:		20161006
DATE AS OF CHANGE:		20161006

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Oasis Petroleum Inc.
		CENTRAL INDEX KEY:			0001486159
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1001 FANNIN STREET
		STREET 2:		SUITE 1500
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002
		BUSINESS PHONE:		281-404-9500

	MAIL ADDRESS:	
		STREET 1:		1001 FANNIN STREET
		STREET 2:		SUITE 1500
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SAN FRANCISCO PARTNERS LP
		CENTRAL INDEX KEY:			0001252458
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34776
		FILM NUMBER:		161925897

	BUSINESS ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		STE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941
		BUSINESS PHONE:		4153836600

	MAIL ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		STE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941

	FORMER NAME:	
		FORMER CONFORMED NAME:	SAN FRANCISCO PARTNERS II LP
		DATE OF NAME CHANGE:	20030707

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SPO ADVISORY PARTNERS LP
		CENTRAL INDEX KEY:			0001252456
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34776
		FILM NUMBER:		161925898

	BUSINESS ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		STE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941
		BUSINESS PHONE:		415-383-6600

	MAIL ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		STE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SPO PARTNERS II LP
		CENTRAL INDEX KEY:			0001046206
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34776
		FILM NUMBER:		161925899

	BUSINESS ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY STE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941
		BUSINESS PHONE:		4153836600

	MAIL ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY, 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941

	FORMER NAME:	
		FORMER CONFORMED NAME:	MAIN STREET PARTNERS LP
		DATE OF NAME CHANGE:	19970916

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WEINBERG ELI J
		CENTRAL INDEX KEY:			0001252462

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34776
		FILM NUMBER:		161925900

	MAIL ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		STE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SCULLY JOHN H
		CENTRAL INDEX KEY:			0001202553

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34776
		FILM NUMBER:		161925901

	MAIL ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		SUITE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PHOEBE SNOW FOUNDATION
		CENTRAL INDEX KEY:			0001252480
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34776
		FILM NUMBER:		161925902

	BUSINESS ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		STE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941
		BUSINESS PHONE:		415-383-6600

	MAIL ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		STE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SF ADVISORY PARTNERS LP
		CENTRAL INDEX KEY:			0000948279
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34776
		FILM NUMBER:		161925896

	BUSINESS ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY STE 3215
		STREET 2:		C/O SPO PARTNERS & CO
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941
		BUSINESS PHONE:		415-383-6600

	MAIL ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY STE 3215
		STREET 2:		C/O SPO PARTNERS & CO
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SPO ADVISORY CORP
		CENTRAL INDEX KEY:			0000919468
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34776
		FILM NUMBER:		161925903

	BUSINESS ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		SUITE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941
		BUSINESS PHONE:		4153836600

	MAIL ADDRESS:	
		STREET 1:		591 REDWOOD HIGHWAY
		STREET 2:		SUITE 3215
		CITY:			MILL VALLEY
		STATE:			CA
		ZIP:			94941

	FORMER NAME:	
		FORMER CONFORMED NAME:	SF ADVISORY CORP
		DATE OF NAME CHANGE:	19990329
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4 SUBMISSION
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    <periodOfReport>2016-10-04</periodOfReport>

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    <issuer>
        <issuerCik>0001486159</issuerCik>
        <issuerName>Oasis Petroleum Inc.</issuerName>
        <issuerTradingSymbol>OAS</issuerTradingSymbol>
    </issuer>

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            <rptOwnerName>SPO ADVISORY CORP</rptOwnerName>
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            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MILL VALLEY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94941</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001252480</rptOwnerCik>
            <rptOwnerName>PHOEBE SNOW FOUNDATION</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>REDWOOD HIGHWAY, SUITE 3215</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MILL VALLEY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94941</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001202553</rptOwnerCik>
            <rptOwnerName>SCULLY JOHN H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>591 REDWOOD HIGHWAY, SUITE 3215</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MILL VALLEY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94941</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>0</isOfficer>
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            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001252462</rptOwnerCik>
            <rptOwnerName>WEINBERG ELI J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>591 REDWOOD HIGHWAY, SUITE 3215</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MILL VALLEY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94941</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001046206</rptOwnerCik>
            <rptOwnerName>SPO PARTNERS II LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>591 REDWOOD HIGHWAY, SUITE 3215</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MILL VALLEY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94941</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001252456</rptOwnerCik>
            <rptOwnerName>SPO ADVISORY PARTNERS LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>591 REDWOOD HIGHWAY, SUITE 3215</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MILL VALLEY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94941</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001252458</rptOwnerCik>
            <rptOwnerName>SAN FRANCISCO PARTNERS LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>591 REDWOOD HIGHWAY, SUITE 3215</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MILL VALLEY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94941</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
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    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000948279</rptOwnerCik>
            <rptOwnerName>SF ADVISORY PARTNERS LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>591 REDWOOD HIGHWAY, SUITE 3215</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MILL VALLEY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94941</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2016-10-04</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>575700</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11.54</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>19345026</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2016-10-04</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11.25</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18851726</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2016-10-05</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1900000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>11.65</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16978126</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The entities selling these shares are SPO Partners II, L.P. (&quot;SPO Partners&quot;), which sold 2,801,900 shares, San Francisco Partners, L.P. (&quot;SF Partners&quot;), which sold 133,000 shares and Phoebe Snow Foundation (&quot;PSF&quot;) which sold 40,800 shares. The range of prices for the sales on 10/4/2016, reported on line 1 above, was $11.35-$11.68. The range of prices for the sales on 10/4/2016, reported on line 2 above, was $11.25-$11.28. The range of prices for the sales on 10/5/2016, reported on line 3 above, was $11.45-$11.82.</footnote>
        <footnote id="F2">As a result of the transaction which caused this filing 15,802,726 shares of the issuer's common stock are owned directly by SPO Partners and may be deemed to be indirectly owned by (i) SPO Advisory Partners, L.P. (&quot;SPO Advisory&quot;), the sole general partner of SPO Partners, (ii) SPO Advisory Corp. (&quot;SPO Corp&quot;), the sole general partner of SPO Advisory, and (iii) John H. Scully (&quot;JHS&quot;) and Eli J. Weinberg (&quot;EJW&quot;), the two controlling persons of SPO Corp.  Additionally 1,175,400 shares are owned directly by SF Partners, and may be deemed to be indirectly beneficially owned by (i) SF Advisory Partners, L.P. (&quot;SF Advisory&quot;), the sole general partner of SF Partners, (ii) SPO Corp., the sole general partner of SF Advisory, and (iii) JHS and EJW, the two controlling persons of SPO Corp.</footnote>
        <footnote id="F3">Additionally, following the transaction which caused this filing, PSF owns 157,800 shares of the issuer's common stock and Scully Memorial Foundation (&quot;SMF&quot;) owns 698,000 shares of the issuer's common stock.  These shares may be deemed to be beneficially owned by JHS solely in his capacity as a controlling person, director and executive officer of PSF and SMF, respectively.  Additionally, 1,842 shares are owned directly by Ian R. McGuire.</footnote>
    </footnotes>

    <remarks>The individuals and entities listed in the notes above (each a &quot;Reporting Person&quot;) may be deemed to form a &quot;group&quot;, as such term is defined in rule 13d-5(b)(1) promulgated under the Securities Exchange Act of 1934, for the purposes of this filing. This filing shall not be deemed as an admission by any Reporting Person that such a Person is, for purposes of Section 16 of the Securities and Exchange Act of 1934 or otherwise, the beneficial owner of any equity securities covered by this statement. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such person's pecuniary interest, if any, therein.</remarks>

    <ownerSignature>
        <signatureName>Kim M. Silva, Attorney-in-Fact</signatureName>
        <signatureDate>2016-10-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
