Largest American oil and gas companies
The oil and gas industry is one of the largest industries worldwide. This sector is involved in exploration, extraction, refining, transport, and marketing of these commodities. Many industries are extremely dependent on oil and gas products, mostly in the form of energy fuels or raw materials for chemical products.
Oil and gas companies from the United States are among the world’s largest corporations. For example, ExxonMobil, Conoco Phillips, and Chevron are long globally leading based on revenue. Periodically, ExxonMobil was the world’s largest company in general, with revenues far exceeding the mark of 400 billion U.S. dollars. As of March 2015, it was also the company with the highest market capitalization, only topped by technology giant Apple. Most of the top U.S. oil and gas companies are involved all over the world, generating large portions of their incomes outside the United States.
The United States has a long tradition of oil and gas companies. ExxonMobil, for example, is a direct descendent of Rockefeller’s Standard Oil Company, which was founded in 1870. Chevron has its roots in the Pacific Coast Oil Company, founded in 1879.