Suncor Energy Inc. operates as an integrated energy company. It operates through Oil Sands,Exploration and Production; Refining and Marketing; and Corporate and Eliminations segments. The Oil Sands segment recovers bitumen from mining and in situ operations, upgrades it into refinery feedstock and diesel fuel, or blends the bitumen with diluent for direct sale to market. The Exploration & Production segment is involved in offshore operations off the east coast of Canada and in the North Sea.