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;
Standard Oil use of the "Standard" name, as it gave Midwestern owners the option of using the Amoco name or Standard. Three supermajor companies now own the rights to the Standard name in the United States: ExxonMobil, Chevron Corp., and BP. BP acquired its rights through acquiring Standard Oil of Ohio and Amoco, and has a small handful of stations in the Midwestern United States using the Standard name. Likewise, BP continues to sell marine fuel under the Sohio brand at various marinas throughout Ohio. ExxonMobil keeps the Esso trademark alive at stations that sell diesel fuel by selling "Esso Diesel" displayed