Menno Grouvel

First Calgary Petroleums Ltd. engages in the exploration and development of oil and gas properties. The company was founded on and is headquartered in Calgary, Canada.

Compañía Española de Petróleos SAU engages in the provision of oil and gas value chain services. It operates through the following segments: Exploration and Production; Refining; Marketing and Distribution; Chemicals, and Corporation. The Exploration and Production segment produces oil and natural gas in land and at sea. The Refining segment distils crude oil and transforms it into refined products for sale to market. The Marketing and Distribution segment responsible for the sale and delivery of products to end consumers. The Chemicals segment specializes in high added value raw materials. The company was founded in 1929 and is headquartered in Madrid, Spain.

Dietsmann NV engages in maintenance of production plant in the oil and gas, power and mining industries. Its services include maintenance engineering, operation and maintenance services, electrical and instrumentation engineering and construction, and technical assistance services. The company was founded by Peter R. G. Kütemann in 1977 and is headquartered in Breda, the Netherlands.