David A. Culbertson

Vintage Petroleum, Inc. was a energy company. The company was engaged in the acquisition, exploitation and exploration of oil and gas properties and the marketing of natural gas and crude oil. The company was headquartered at Tulsa, OK.

Mid-Con Energy Partners LP owned, operated, acquired and developed oil and natural gas properties in North America, with a focus on enhanced oil recovery. Its core areas of operation were located in Oklahoma, Texas and Wyoming. The company was founded by Charles R. Olmstead, S. Craig George, and Jeffrey R. Olmstead in July 2011 and was headquartered in Tulsa, OK.

Mid-Con Energy GP LLC is an oil and natural gas company that owns, operates, acquires, exploits, and develops producing properties in the United States. The private company's core areas of operation are located in southern, northeastern, and parts of western Oklahoma, as well as within Texas and Kansas. The company is based in Dallas, TX. Mid-Con Energy GP focuses on the mid-continent region of the United States. The company was founded by S. Craig George, Jeffrey Randy Olmstead, Charles Randy Olmstead. Sherry L. Morgan has been the CEO of the company since 2008.

Williams Production Co. LLC explores and produces natural gas from tight-sands formations and coal bed methane reserves. The company is headquartered in Tulsa, OK.

Mid-Con Energy I LLC developed new water flood projects. The company was founded in 2004 and was headquartered in Tulsa, OK.

Mid-Con Energy II LLC developed secondary oil and gas reserves. The company provided oil and gas production and recovery services. The company was founded in june 2009 and was headquartered in Tulsa, OK.