Marathon Oil in North America, including $600 million in the Eagle Ford and $200 million in the Bakken formation. The company owns 277,000 net acres in the Bakken formation. Marathon began as The Ohio Oil Company in 1887. In 1889, it was purchased by John D. Rockefeller's Standard Oil. It remained a part of Standard Oil until Standard Oil was broken in 1911. In 1930, The Ohio Oil Company bought the Transcontinental Oil Company and established the "Marathon" brand name. In 1962, the company changed its name to "Marathon Oil Company". In 1982, Mobil made a hostile offer to buy the company;
Sirte Oil Company one of the five US companies forced by the U.S. government to leave Libya. In 1991, SOC merged with the National Petrochemical Company, creating the Sirte Oil Company for Production, Manufacturing of Oil and Gas. Activities included oil refining, liquefaction of natural gas and petrochemicals (methanol, ammonia and urea). SOC operates the Raguba field in the central part of the Sirte Basin. The field is connected by pipeline to the main line between the Nasser field, one of the largest in Libya, and Brega. As of 2005, besides Nasser, SOC was in charge of two other gas fields - Attahadi