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Cover Page
May 11, 2020
Cover [Abstract]  
Document Type 8-K
Document Period End Date May 11, 2020
Entity Registrant Name OASIS PETROLEUM INC.
Entity Incorporation, State or Country Code DE
Entity File Number 001-34776
Entity Tax Identification Number 80-0554627
Entity Address, Address Line One 1001 Fannin Street
Entity Address, Address Line Two Suite 1500
Entity Address, City or Town Houston
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77002
City Area Code 281
Local Phone Number 404-9500
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock
Trading Symbol OAS
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0001486159
Amendment Flag false