Tatneft OAO engages in the exploration, development and production of crude oil. The company also engages in refining and marketing of crude oil and refined products as well as production and marketing of petrochemicals. Its operations are carried out through the following segments: Exploration and Production, Refining and Marketing, and Petrochemicals. The Exploration and Production segment engages in the exploration, development, extraction, and sale of crude oil. The Refining and Marketing segment engages in the purchase and sale of crude oil and refined products. The Petrochemicals segment engages in the sale of tires and petrochemical raw material and refined products. The company was founded in 1950 and is headquartered in Almetyevsk, Russia.