Aires Barreto

CITGO Petroleum Corp. engages in refining, transporting, and marketing of transportation fuels, lubricants, and petrochemicals products. It offers retail gasoline, diesel fuel, jet fuel, lubricants, petrochemicals, and other petroleum-based industrial products. The company was founded by Henry L. Doherty in 1910 and is headquartered in Houston, TX.

PDV America, Inc. explores and markets petroleum products. It transports gasoline, diesel, jet fuel, petrochemicals, lubricants, asphalt and waxes through its subsidiary CITGO. The company was founded in 1986 and is headquartered in Tulsa, OK.

Azabache Energy, Inc. is an exploration company, which engages in the exploration of oil and gas properties in Argentina and Colombia. The company was founded on September 21, 2005 and is headquartered in Calgary, Canada.

Petróleos de Venezuela SA is a gas and oil company. It is engaged in exploring, extracting, transporting, manufacturing, refining, storing, and marketing crude oil and other hydrocarbons. The company was founded in 1975 and is headquartered in Caracas, Venezuela.

Ruhr Oel GmbH engages in the refining and distribution of oil. It markets and transports products manufactured from natural gas, such as liquefied natural gas and methanol. The company was founded in 1983 and is headquartered in Gelsenkirchen, Germany.

Nynas AB produces and distributes bitumen and naphthenic specialty oils. Its product areas and solutions include bitumen for paving and industrial applications; base, tyre, and transforms oils; oil for rubber; printing ink oils; and process oil. The company was founded in 1928 and is headquartered in Stockholm, Sweden.