摘要
China has abundant oil and gas resources offshore. At the end of the 20th century. CNOOC discovered enormous hydrocarbon resources in the offshore Bohai area. To dale, CNOOC has established three major gasficlds respectively in the Bohai Sea, East China Sea and the western South China Sea and has provided over 4 billion cubic meters of natural gas to Liaoning, Tianjin, Shanghai. Hong Kong and Hainan Island. The Ya 13-1 gasfield in particular,
