Daqing Oilfield's Sichuan-Chongqing exploration area has produced 1.001 billion cubic meters of natural gas cumulatively from the Maokou formation as of Aug 31, 2026, surpassing the 1 billion cubic meter mark for the first time. The milestone signals a major step toward commercial-scale development of the reservoir, bolstering China's stable oil and gas supply ahead of winter demand.