Wang Xin

CNOOC Petroleum North America ULC is an upstream oil and gas company responsibly developing energy resources in the UK North Sea, offshore West Africa, the United States, and Western Canada. The firm has three principal businesses: conventional oil and gas, oil sans, and gas and oil. The company was founded in 1971 and is headquartered in Calgary, Canada.

CNOOC International Ltd. is based in Beijing, China and ultimately controlled by the Government of China. CNOOC International Ltd. provides energy services.

CNOOC China Ltd. produces oil and gas in China. It provides prospecting, refinement and processing, and sale of offshore oil and natural gas products. The company also offers offshore petroleum exploration, development, production, and sales. CNOOC China was founded in 1999 and is headquartered in Beijing, China.

CNOOC Southeast Asia Ltd. operates as an investment holding Chinese company. The company is based in Beijing, China. The company is ultimately controlled by the Government of China.