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Chevron Corporation (NYSE: CVX) is the world's fifth largest global energy companies. Headquartered in San Ramon, California, USA and active in more than 180 countries, it is engaged in every aspect of the oil and gas industry, including exploration and production; refining, marketing and transport; chemicals manufacturing and sales; and power generation. Chevron is one of the world's six "supermajor" oil companies.

Chevron was originally known as Standard Oil of California, or Socal, and was formed amid the antitrust breakup of Standard Oil in 1911. It was one of the "Seven Sisters" that dominated the world oil industry during the early 20th century. In 1933, Saudi Arabia granted Socal a concession to find oil, which finally occurred in 1938 when the largest oil field on earth was discovered. Socal's subsidiary California-Arabian Standard Oil Company evolved over the years, becoming the Arabian American Oil Company (ARAMCO) in 1944. In 1973, the Saudi government began buying into ARAMCO. By 1980, the company was entirely owned by the Saudis and in 1988, the name was changed to Saudi Arabian Oil Company (Saudi Aramco).