CNOOC is a state-owned enterprise. The full name of CNOOC is China Offshore Oil Group Co., Ltd., which is a central enterprise headquartered in Beijing. In addition to CNOOC, there is CNOOC, referred to as CNOOC.
China Offshore Oil is the first industrial industry in China to be fully opened to the outside world after the reform and opening up. CNOOC, PetroChina, Sinopec and CAO are the four major groups in China, directly under SASAC.