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 of Colorado of Indiana, and Standard Oil of Colorado was disbanded. Standard Oil of Colorado Standard Oil of Colorado was chartered in Denver, Colorado in 1922. It was eventually rechartered under the name Standard Oil Company of Colorado in 1927 and began to sell stock in 1930. Standard Oil of Colorado was not related to the well known Standard Oil company and did not own any wells, refineries, or gasoline stations. It was sued in 1931 by Standard Oil of Indiana (which was interested in expanding its marketing influence into the Colorado area) over use of the "Standard Oil" name. By 1934,