China National Offshore Oil Corporation (CNOOC) was established on February 25, 1983. It is a super large state-owned enterprise (central enterprise) directly under the State owned Assets Supervision and Administration Commission of the State Council of the People's Republic of China, headquartered in Beijing, with 98750 employees and four upstream branches in Tianjin, Zhanjiang, Shanghai, and Shenzhen. China National Offshore Oil Corporation (CNOOC) ranked 64th in the 2020 Fortune Global 500 list. Ranked 27th in the 2015 Top 500 Chinese Brands Ranking organized by the China Brand Value Research Institute.
Since its establishment in 1983, China National Offshore Oil Corporation (CNOOC) has successfully implemented major measures such as reform and restructuring, capital operation, overseas mergers and acquisitions, and upstream and downstream integration. The company has achieved leapfrog development, continuously strengthened its comprehensive competitiveness, and maintained a good development trend. It has developed from a purely upstream company engaged in oil and gas exploration to an international energy company with prominent main business and complete industrial chain, forming six major business sectors including oil and gas exploration and development, professional technical services, refining and sales, fertilizers, natural gas and power generation, financial services, and new energy.