    <SEC-DOCUMENT>0001486159-21-000021-index.html : 20210318
    <SEC-HEADER>0001486159-21-000021.hdr.sgml : 20210318
    <ACCEPTANCE-DATETIME>20210318172443
    ACCESSION NUMBER:		0001486159-21-000021
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		31
    CONFORMED PERIOD OF REPORT:	20210318
    FILED AS OF DATE:		20210318
    DATE AS OF CHANGE:		20210318

    FILER:

    	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

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-34776
    		FILM NUMBER:		21755500

    	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
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>a2021def14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: a2021def14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>a2021compatglance1.jpg
    <TEXT>
    Document 2 - file: a2021compatglance1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>brooks1a.jpg
    <TEXT>
    Document 3 - file: brooks1a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>chart-5587e629ce0c4df394c1.jpg
    <TEXT>
    Document 4 - file: chart-5587e629ce0c4df394c1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>image1.jpg
    <TEXT>
    Document 5 - file: image1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>image2.jpg
    <TEXT>
    Document 6 - file: image2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>image231.jpg
    <TEXT>
    Document 7 - file: image231.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>image241.jpg
    <TEXT>
    Document 8 - file: image241.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>image251.jpg
    <TEXT>
    Document 9 - file: image251.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>image3.jpg
    <TEXT>
    Document 10 - file: image3.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>image4.jpg
    <TEXT>
    Document 11 - file: image4.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>image5.jpg
    <TEXT>
    Document 12 - file: image5.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>image6.jpg
    <TEXT>
    Document 13 - file: image6.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>image7.jpg
    <TEXT>
    Document 14 - file: image7.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>image8.jpg
    <TEXT>
    Document 15 - file: image8.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>oasislogo3a.jpg
    <TEXT>
    Document 16 - file: oasislogo3a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>oasispetroleuminc_prxyxp50.jpg
    <TEXT>
    Document 17 - file: oasispetroleuminc_prxyxp50.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>oasispetroleuminc_prxyxp50a.jpg
    <TEXT>
    Document 18 - file: oasispetroleuminc_prxyxp50a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>oasistopcontributions1.jpg
    <TEXT>
    Document 19 - file: oasistopcontributions1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>omp001_agexeeo1.jpg
    <TEXT>
    Document 20 - file: omp001_agexeeo1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>omp001_diversityxequityxin.jpg
    <TEXT>
    Document 21 - file: omp001_diversityxequityxin.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>omp001_environmentalxrev11.jpg
    <TEXT>
    Document 22 - file: omp001_environmentalxrev11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>omp001_femalexworkforce1.jpg
    <TEXT>
    Document 23 - file: omp001_femalexworkforce1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>omp001_gasxcapture1.jpg
    <TEXT>
    Document 24 - file: omp001_gasxcapture1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>omp001_governancexrev11.jpg
    <TEXT>
    Document 25 - file: omp001_governancexrev11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>omp001_minorityxworkforce1.jpg
    <TEXT>
    Document 26 - file: omp001_minorityxworkforce1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>omp001_recordablexincident.jpg
    <TEXT>
    Document 27 - file: omp001_recordablexincident.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>omp001_recordablexspills1.jpg
    <TEXT>
    Document 28 - file: omp001_recordablexspills1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>omp001_sustainabilityxatxg.jpg
    <TEXT>
    Document 29 - file: omp001_sustainabilityxatxg.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>omp001_volunteerismxfundra.jpg
    <TEXT>
    Document 30 - file: omp001_volunteerismxfundra.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>omp001_willistonxwins1.jpg
    <TEXT>
    Document 31 - file: omp001_willistonxwins1.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>