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Organization and Operations of the Company	3 Months Ended
Organization and Operations of the Company	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Operations of the Company	Organization and Operations of the Company Oasis Petroleum Inc. (together with its consolidated subsidiaries, “Oasis” or the “Company”) is an independent exploration and production company focused on the acquisition and development of onshore, unconventional crude oil and natural gas resources in the United States. Oasis Petroleum North America LLC (“OPNA”) and Oasis Petroleum Permian LLC (“OP Permian”) conduct the Company’s exploration and production activities and own its proved and unproved crude oil and natural gas properties located in the North Dakota and Montana regions of the Williston Basin and the Texas region of the Delaware Basin, respectively. The Company also operates a midstream services business through OMS Holdings LLC (“OMS”), through which the Company owns the general partner and a majority of the outstanding units of Oasis Midstream Partners LP (“OMP” or “Oasis Midstream”). The Company also operates a well services business through Oasis Well Services LLC (“OWS”). OMS and OWS are separate reportable business segments that are complementary to the Company’s primary development and production activities.