The Long Lake oil sands upgrader project is an in situ oil extraction project 40 km (25 mi) southeast of Fort McMurray in the Athabasca oil sands region of Alberta. The project is operated by Nexen, a wholly owned subsidiary of China National Offshore Oil Corporation (CNOOC) Limited. Long Lake is an integrated steam-assisted gravity drainage (SAGD) and upgrading operation that uses a proprietary OrCrude technology as well as hydrocracking and gasification to produce Premium Synthetic Crude (PSC) oil.