Greater Nile Petroleum Operating Company was created on 1997-06-18.
White Nile Petroleum Operating Company was created in 2001.
Asiatic Petroleum Company was created in 1903.
Iraq Petroleum Company was created in 1929.
Magnolia Petroleum Company was created in 1911.
Phillips Petroleum Company was created in 1917.
Bahrain Petroleum Company was created in 1929.
Singapore Petroleum Company was created in 1969.
Caspian International Petroleum Company was created in 1996.
Jordan Petroleum Refinery Company was created in 1956.
Somali Petroleum Company was created on 2008-08-19.
Mexican Eagle Petroleum Company was created in 1900.
Kuwait National Petroleum Company was created in 1960.