|Type||Private (subsidiary of Tesoro Corporation)|
|Industry||Oil & Gas Extraction|
|When it was created||1966|
|Headquarters||La Palma, California, United States|
|Number of locations||1,200|
|Area served||United States|
|Parent||British Petroleum (2000-2013)|
Tesoro Corporation (2013-present)</td></tr>
ARCO (short for Atlantic Richfield Company, the original name) is a United States oil company. It has operationsn 2 in the United States, Indonesia, the North Sea, and the South China Sea. As of July 2011, it had more than 1,300 gas stations in the western part of the United States.
ARCO's original parent companies included:
Between 1970 and 2000, ARCO had a complicated corporate history. By 1985, it sold its Eastern US business to a new Atlantic Petroleum. In 2000, the remaining Western US business was bought by British Petroleum (BP). Finally, in 2013, BP sold ARCO and the Carson Refinery to Tesoro for $2.5 billion.
In 1957, Richfield was the first to drill for oil in Alaska. On July 15 of that year they struck oil with their first well. It was the first major oil discovery in Alaska and tested at 900 barrels a day. In 1968 they partnered with Exxon for Alaska North Slope oil production. In 1980, they were the seventh largest oil company in the United States.