Exxon Mobil Corporation engages in the exploration and production of crude oil and natural gas, and manufacture of petroleum products, as well as transportation and sale of crude oil, natural gas, and petroleum products. The company manufactures and markets commodity petrochemicals, including olefins, aromatics, polyethylene and polypropylene plastics, and other specialty products. It also has interests in electric power generation facilities. As of December 31, 2011, Exxon Mobil Corporation operated 37,692 gross and 31,683 net operated wells. The company has operations in the United States, Canada/South America, Europe, Africa, Asia, and Australia/Oceania. Exxon Mobil Corporation was incorporated in 1882 and is based in Irving, Texas.