According to CCTV News, the cumulative oil and gas equivalent production of China's largest oil and gas field, Changqing Oilfield, has exceeded 1 billion tons.

Changqing Oilfield is located in the Ordos Basin of China. It has total oil resources of 8.588 billion tons and total natural gas resources of 10.7 trillion cubic meters. It also has rich resources such as coal, rock salt, coalbed methane, and uranium.