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