Matthew J. P. Heysel

Gastar Exploration LLC engaged in the exploration, development and production of oil, natural gas, condensate and natural gas liquids. Its principal business activities included the identification, acquisition, and subsequent exploration and development of oil and natural gas properties with an emphasis on unconventional reserves, such as shale resource plays. The company was founded by Thomas E. Robinson in 1987 and is headquartered in Houston, TX.

Part of Gastar Midco Holdings LLC, New Energy West Corp. explores for and develops oil and gas. The company is based in Calgary, Canada.

Part of Big Sky Energy Corp., Big Sky Energy Kazakhstan Ltd. explores for oil and gas. The company is based in Calgary, Canada. Big Sky Energy Kazakhstan was acquired by China Energy Ventures Corp. on May 17, 2004 for $2.50 million.

Part of Big Sky Energy Corp., Vector Energy West LLP is an oil and Kazakhstani gas exploration company. The company is based in Almaty, Kazakhstan. Vector Energy West was acquired by Big Sky Energy Atyrau Ltd., part of Big Sky Energy Corp. on July 15, 2004.

Big Sky Energy Corp. operates oil and gas exploration and production Company. It has five onshore petroleum licenses in the prolific pre-Caspian basin in the Republic of Kazakhstan. The company was founded in February 1993 and is headquartered in Calgary, Canada.

Part of Geo-Jade Petroleum Corp., KoZhaN LLP is a Kazakhstani company that develops oil and gas deposits. The company is based in Almaty, Kazakhstan. KoZhaN was acquired by Geo-Jade Petroleum Corp. from International Mineral Resources II BV.

Burj Petroleum Africa Ltd. is an oil and British gas exploration company founded in 2011. The private company explores crude petroleum and natural gas.

Burj Petroleum Corp. is engaged in the sourcing, marketing and distribution of petroleum products and minerals. The company was founded in 1995 and is headquartered in Dubai, United Arab Emirates.