Emerald Oil, Inc. is an independent exploration and production company. The Company operates through the exploration, development and production of oil and natural gas segment. It focuses on acquiring acreage and developing wells in the Williston Basin of North Dakota and Montana. It designs, drills and operates oil and natural gas wells on its acreage holdings. It also participates in the drilling of oil and natural gas wells operated by other companies. Its Williston Basin acreage is located in McKenzie, Billings and Stark Counties of North Dakota, and Richland County of Montana. Its geologic target is the Bakken Pool with a focus on the dolomitic, sandy interval between the two Bakken Shales at an approximate vertical depth of 10,600 to 11,300 feet and the Three Forks located below the lower Bakken Shale. It also targets the Pronghorn Sand formation, located in Billings and Stark Counties of North Dakota and run along the Bakken shale pinch-out in the southern Williston Basin.