There is only one company, That is: The Bahrain Petroleum Company B.S.C. (BAPCO), wholly owned by the Government of Bahrain. See the link below.
Iraq Petroleum Company was created in 1929.
Phillips Petroleum Company was created in 1917.
Singapore Petroleum Company was created in 1969.
Asiatic Petroleum Company was created in 1903.
Magnolia Petroleum Company was created in 1911.
Somali Petroleum Company was created on 2008-08-19.
Jordan Petroleum Refinery Company was created in 1956.
Mexican Eagle Petroleum Company was created in 1900.
Caspian International Petroleum Company was created in 1996.
Kuwait National Petroleum Company was created in 1960.
White Nile Petroleum Operating Company was created in 2001.