King of the Tulsa oil patch, oil and gas exploration and production independent Kaiser-Francis Oil Company buys, sells, and develops oil and gas properties, primarily in Arkansas, Colorado, Kansas, Nebraska, New Mexico, North Dakota, Oklahoma, Oregon, Texas, West Virginia, and Wyoming. The company teamed up with fellow Tulsa-based energy firm SemGas LP to help build the Wyckoff Gas Storage facility (6 billion cu. ft. of working gas storage) in Steuben County, New York. Local billionaire George Kaiser owns and manages Kaiser-Francis Oil. In 2008 Forbes pegged George Kaiser's estimated wealth at $12 billion.