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The 10 Top U.S. Oil Companies

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The United States is not one of the top 10 richest countries, notes Business Insider. However, several large oil companies are headquartered here. Oil plays an important role in the economy of some of the richest countries, and oil is big in the U.S. as well. Take a look at the top 10 oil companies in the USA to learn more about these large oil producers.

ExxonMobil

ExxonMobil is the country's top oil and gas company, states World Atlas. It produces about produces almost four million barrels of oil equivalent each day. The company headquarters is in Irving, TX.

Chevron

Not far behind ExxonMobil, is Chevron, the second-leading oil company in the U.S., notes World Atlas. The company was founded in the early 20th century and its headquarters is in San Ramon, CA.

ConocoPhillips

ConocoPhillips was formed in 2002 with the merger of Conoco Inc. and Phillips Petroleum Co. Its headquarters is in Houston, TX. ConocoPhillips had a market value of $76.7 billion in 2015, according to World Atlas.

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Hess Corporation

Hess Corporation was founded in 1933 and is a leading oil producer in the Gulf of Mexico. It reported an $18.9 million market cap in 2016, notes Forbes.

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EOG Resources, Inc.

EOG Resources, Inc. is one of the largest independent crude oil and natural gas companies in the U.S., as noted by the company. Its market cap was $45.9 million in 2016, notes Forbes.

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Occidental Petroleum

Occidental Petroleum is headquartered in Texas, where it's the state's third-largest producer of oil. This company was founded in 1920 and produces 630,000 barrels of oil equivalent each day, as stated by World Atlas.

Pioneer Natural Resources

Pioneer Natural Resources had a market cap of $25.5 million in 2016, states Forbes. This company has its headquarters in Irving, TX.

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Devon Energy

Devon energy produces about 250,000 barrels of oil a day, according to the company. Oil makes up about 45 percent of its production.

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Anadarko Petroleum

Anadarko Petroleum has locations throughout several western states in the U.S. and a headquarters in The Woodlands, TX. It had a 2016 market cap of $27.2 million, states Forbes.

Apache Corp.

Apache Corp. drilled its first oil well in Oklahoma in 1955. Today, it has headquarters in Texas and operates throughout the world. Its market cap was 21.1 million in 2016, according to Forbes.