Gazprom OAO is engaged in geological exploration, production, transportation, storage, processing, and marketing of gas and other hydrocarbons. It operates through the following segments: Production of Gas, Transportation, Distribution, Gas Storage, Production of Crude Oil and Gas Condensate, Refining, and Electric and Heat Energy Generation. The Distribution segment includes the distribution of gas within the Russian Federation and abroad. The Gas Storage segment involves storage of extracted and purchased gas in underground gas storages. The Production and Crude Oil and Gas Condensate segment is engaged in exploration and production of crude oil, oil and gas condensate. The Refining segment consists of processing of oil, gas condensate, hydrocarbons, and sale of refined products. The company was founded in 1989 and is headquartered in Moscow, Russia.