Oasis Petroleum Inc., an independent exploration and production company, was acquired by Whiting Petroleum Corporation on July 1, 2022, in a reverse merger transaction. The company focuses on acquiring and developing unconventional oil and natural gas resources in the United States, with 492,355 net leasehold acres in the Williston Basin as of December 31, 2021. Crude oil and natural gas are sold to refiners, marketers, and other purchasers with access to pipeline and rail facilities, and Oasis Petroleum Inc. is based in Houston, Texas, having been founded in 2007.