Largest oil companies in california
From its early days as part of John D. Rockefeller's Standard Oil empire, Exxon Mobil has become the largest American oil company with a 2017 market value of $341.61 billion. Chevron Corporation Descended from Pacific Coast Oil Company, which was formed after the discovery of oil in California in 1879, the company has undergone several mergers, most recently with Gulf Oil to become Chevron. This statistic shows the United States' ten largest oil and gas companies based on market value in 2019. As of June 2019, Chevron reached a market value of some 238 billion U.S. dollars.