Jeffrey P. Marcel

Denbury Inc. is an independent energy company, which engages in the operation and production of oil and natural gas reserves. The firm holds interests in the Gulf Coast and Rocky Mountain regions. It aims to develop significant stranded reserves of American oil from depleted reservoirs through carbon dioxide enhanced oil recovery (CO2 EOR). The company was founded by Gareth G. Roberts in 1951 and is headquartered in Plano, TX.

Trimont Energy Ltd. acquires, explores, develops and operates oil and natural gas properties. The company was founded in 2007 and is headquartered in Pittsburgh, PA.

Part of Occidental Petroleum Corp., Placid Oil Co. is a company that deals with fuel oil and oil & gas production. The company is based in Dallas, TX. Placid Oil was acquired by Occidental Petroleum Corp. on December 30, 1994 for $250 million.

Rosewood Resources, Inc. is a oil and gas company. It operates over 1,000 wells in Colorado, Kansas, Utah, and Texas, and has extensive non-operated interests in North Dakota and Oklahoma. The company was founded in 1983 and is headquartered in Dallas, TX.