Exxon Mobil Corporation explores for and produces crude oil and natural gas in the United States and internationally. It operates through Upstream, Downstream, and Chemical segments. The company is also involved in the manufacture, trade, transport, and sale of crude oil, natural gas, petroleum products, petrochemicals, and other specialty products; and manufactures and sells petrochemicals, including olefins, polyolefins, aromatics, and various other petrochemicals. As of December 31, 2020, it had approximately 22,239 net operated wells with proved reserves. The company was founded in 1870 and is based in Irving, Texas.