Hugh Leonard

Buried Hill Energy (Cyprus) Public Ltd. Co. engages in the oil and gas exploration services. The firm identifies and delivers productive and profitable international oil and gas opportunities on behalf of its stakeholders. The company was founded in 2002 and is headquartered in Nicosia, Cyprus.

Burmah Castrol Plc is an international manufacturer and marketer of specialised lubricants and chemicals, operating in over 60 countries worldwide. The group operates mainly under the Castrol brand name in lubricant

Part of Shell Plc, Enterprise Oil Ltd. is a British company that extracts petroleum and natural gas. The company is based in London, UK. The company was founded in 1982. Enterprise Oil was acquired by Shell Resources Plc on May 07, 2002 for $5,015.54 million.

Khanty Mansiysk Oil Corp. explores and processes crude oil. It develops, produces and markets oil. The company was founded by John Bowler Fitzgibbons in 1993 and is headquartered in New York, NY.

PetroKazakhstan, Inc. produces oil and oil related products. It produces crude oil from eight different zones in the Kumkol Fields, both north, and south. PetroKazakhstan was founded in 1981 and is headquartered in Calgary, Canada.