Exhibit 21.1

List of Subsidiaries of Oasis Petroleum Inc.

Name of Subsidiary						Jurisdiction of Incorporation or Organization
Oasis Petroleum LLC						Delaware
Oasis Petroleum North America LLC						Delaware
Oasis Petroleum Permian LLC						Delaware
Oasis Petroleum Marketing LLC						Delaware
Oasis Well Services LLC						Delaware
Oasis Midstream Services LLC						Delaware
OMS Holdings LLC						Delaware
OMP GP LLC						Delaware
Oasis Midstream Partners LP						Delaware
OMP Operating LLC						Delaware
Bobcat DevCo LLC						Delaware
Beartooth DevCo LLC						Delaware
Bighorn DevCo LLC						Delaware
Panther DevCo LLC						Delaware