Tatneft OAO is engaged in the exploration, development, and production of crude oil. Its activities include refining and marketing of crude oil, and refined products, as well as production and marketing of petrochemicals. It operates withing the following segments: Exploration and Production, Refining and Marketing, and Petrochemicals. The Exploration and Production segment consists of the exploration, development, extraction, and sale of crude oil. The Refining and Marketing segment is comprised of the purchase and sale of crude oil and refined products. The Petrochemicals segment is involved in the sale of tires, petrochemical raw material, and refined products. The company was founded in 1950 and is headquartered in Almetyevsk, Russia.