| General Information

Biggest Oil Companies

After oil was discovered in Oil Creek, Pennsylvania in 1859, petroleum became a popular industry in the United States. In addition to Pennsylvania, oil was found in states like Kansas, Oklahoma, Texas, Louisiana, California, Alaska, and much of the Gulf Coast, which helped the industry grow. Today, the U.S. is the third largest oil-producing country in the world, and at Fuel Express, we’re proud to say that our fleet fuel cards are accepted at the country’s top three largest contributors:

ExxonMobil Corporation

ExxonMobil was founded in 1882 as part of the original Standard Oil Company begun by John D. Rockefeller. Exxon and Mobil were two separate oil companies and were both descendants of Standard Oil. When the U.S. Supreme Court ordered that Standard Oil be split into 34 companies, oil companies Socony (Standard Oil Company of New York) and Jersey Standard were born. These eventually became Mobil and Exxon and in 1999, merged to become ExxonMobil. Today, the company is headquartered in Irving, Texas and is one of the world’s largest companies by revenue.


ConocoPhillips is another large oil company that was the result of a merge and is the oldest of the top three. Conoco Inc. was founded in 1875 as the Continental Oil and Transportation Company. Forty two years later, Phillips Petroleum Company was founded in 1917. The two companies merged in 2002 and became one of the world’s largest independent pure-play and exploration production companies. Today, it is headquartered in the Energy Corridor district of Houston, Texas.

Chevron Corporation

Chevron Corporation was established in 1879 and is also one of the largest corporations in the world by revenue. The company began in California under the name Pacific Coast Oil Company, but was acquired in 1900 by Rockefeller’s Standard Oil Company. The name Chevron was introduced in the 1930s and over the next several decades, the company acquired several other oil companies. Today, Chevron is headquartered in San Ramon, California and is active in over 180 countries.

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