1, Xinjiang Oilfield Company. Xinjiang Oilfield Company is the largest oil production company in western China, which belongs to China Petroleum and Natural Gas Co., Ltd., and is mainly engaged in the exploration, development, gathering, transportation and sales of oil and gas resources in Junggar Basin and its peripheral basins.
2. Tarim Oilfield Company. China Petroleum Tarim Oilfield Company is a large-scale state-owned oil enterprise integrating oil and gas exploration, development, refining, sales and scientific research, and it is the main gas source of the West-East Gas Transmission Project.