Chevron Corporation

Chevron Corporation is an American multinational energy corporation predominantly specializing in oil and gas. The second-largest direct descendant of Standard Oil, and originally known as the Standard Oil Company of California (shortened to Socal or CalSo), it is active in more than 180 countries. Within oil and gas, Chevron is vertically integrated and is involved in hydrocarbon exploration, production, refining, marketing and transport, chemicals manufacturing and sales, and power generation.

Founded originally in Southern California during the 1870s, the company was then based for many decades in San Francisco, California, before moving its corporate offices to San Ramon, California, in 2001; on August 2, 2024, Chevron announced that it would be transferring its headquarters to Houston, Texas.

Chevron traces its history back to the second half of the 19th century to small California-based oil companies which were acquired by Standard and merged into Standard Oil of California. The company grew quickly on its own after the breakup of Standard Oil by continuing to acquire companies and partnering with others both inside and outside of California, eventually becoming one of the Seven Sisters that dominated the global petroleum industry from the mid-1940s to the 1970s.

In 1985, Socal merged with the Pittsburgh-based Gulf Oil and rebranded as Chevron; the newly merged company later merged with Texaco in 2001. Chevron manufactures and sells fuels, lubricants, additives, and petrochemicals, primarily in Western North America, the US Gulf Coast, Southeast Asia, South Korea and Australia. In 2018, the company produced an average of 791,000 barrels (125,800 m³) of net oil-equivalent per day in United States.

Chevron is one of the largest companies in the world and the second-largest oil company based in the United States by revenue, only behind fellow Standard Oil descendant ExxonMobil. Chevron ranked 10th on the Fortune 500 in 2023. The company is also the last-remaining oil-and-gas component of the Dow Jones Industrial Average since ExxonMobil's exit from the index in 2020.

Chevron has been subject to numerous controversies.

One of Chevron's early predecessors, "Star Oil", discovered oil at the Pico Canyon Oilfield in the Santa Susana Mountains north of Los Angeles in 1876. The 25 barrels of oil per day well marked the discovery of the Newhall Field, and is considered by geophysicist Marius Vassiliou as the beginning of the modern oil industry in California. Energy analyst Antonia Juhasz has said that while Star Oil's founders were influential in establishing an oil industry in California, Union Mattole Company discovered oil in the state eleven years prior.

In September 1879, Charles N. Felton, Lloyd Tevis, George Loomis and others created the "Pacific Coast Oil Company", which acquired the assets of Star Oil with $1 million in funding. Pacific Coast Oil eventually became the largest oil interest in California, and in 1900, John D. Rockefeller's Standard Oil acquired Pacific Coast Oil for $761,000. In 1906, the Pacific Coast acquired the business operations and assets of the Standard Oil Company (Iowa). At this time, Pacific renamed itself the Standard Oil Company (California).