WLL

Whiting Petroleum Corporation is an independent oil and gas company. The Company is engaged in development, production, acquisition and exploration activities primarily in the Rocky Mountains region of the United States. It is engaged in the exploration and production of crude oil, natural gas liquid (NGLs) and natural gas. Its Northern Rocky Mountains operations includes its properties in the Williston Basin of North Dakota and Montana targeting the Bakken and Three Forks formations and encompasses approximately 756,800 gross (476,300 net) developed and undeveloped acres. The Company's Central Rocky Mountains operations included properties at its Redtail field in the Denver Julesburg Basin (DJ Basin) in Weld County, Colorado targeting the Niobrara and Codell/Fort Hays formations and encompasses approximately 96,400 gross (84,600 net) developed and undeveloped acres. Its other operations primarily relate to non-core assets in Colorado, Mississippi, North Dakota, Texas and Wyoming.