Jerald Lindsay Oak

Petrobank Energy & Resources Ltd. operates as a heavy oil exploration and production company with operations in Western Canada. It operates through two business units: Whitesands and Archon. The Whitesands unit focuses on developing Petrobank's oil assets located in the Peace River, Alberta area and Saskatchewan's heavy oil belt. The Archon unit focuses on pioneering new and improved methods of finding and producing oil. The company was founded by James D. Tocher and Jerald Lindsay Oaks on December 1, 1983 and is headquartered in Calgary, Canada.

Society of Petroleum Engineers, Inc. provides petroleum engineering services. The non-profit company is based in Allen, TX and has subsidiaries in United States, India and Canada.

American Institute of Mining, Metallurgical & Petroleum Engineers operates as an engineering society. The company was founded in 1871 and is headquartered in Englewood, CO.

Petrominerales Ltd. engaged in the exploration, development, and production of crude oil. Its operations were carried out through the following segments: Produced Oil, Marketing, and Other. Its commercial oil production basins included the Upper, Middle, and Lower Magdalena Valley, Llanos, Putumayo, Catatumbo, Eastern Cordillera, and the Guajira basins in Colombia; Ucayali basin in Peru; and the Reconcavo basin in Brazil. The company was founded on April 20, 2006 and was headquartered in Calgary, Canada.

Petrominerales Ltd. is engaged in the exploration and production of oil and gas in Colombia and Peru. Its operations include the Llanos Deep Basin Exploration, Central Llanos Basin, Heavy Oil, Neiva, Orito and Antorcha. The company was founded on May 20, 2006 and is headquartered in Bogota, Colombia.