Oasis Petroleum Inc. is an independent exploration and production company. The Company is focused on the acquisition and development of unconventional oil and natural gas resources in the North Dakota and Montana regions of the Williston Basin. The Company’s core projects include Williston Basin, West Williston, East Nesson and Sanish. The Williston basin produces oil and natural gas from various producing horizons, including the Bakken, Three Forks, Madison and Red River formations. The Company controls 357,584 net acres in the West Williston project area. The Company controls 147,919 net acres in the East Nesson project area. The Company also operates an oil and gas marketing business through Oasis Petroleum Marketing LLC, a well services business through Oasis Well Services LLC and a midstream services business through Oasis Midstream Services LLC.