中国页岩气开发形势、特征及前景OA

With the acceleration of energy transition worldwide and the deep implementation of China's"dual carbon"goals,shale gas has become a strategic replacement resource for safeguarding national natural gas supply and promoting green and low-carbon energy transition.Based on substantial drilling,fracturing and development performance data,this paper quantitatively analyzes the evolutionary characteristics of shale gas development in China in multiple dimensions of geology,drilling,fracturing and development,and summarizes the new breakthroughs in new fields.In addition,the development bottlenecks are identified,and the industrial trends are forecast.The following results are obtained.First,the shale gas development in China has undergone a leapfrog transformation from exploration breakthrough and large-scale productivity construction to high-quality productivity construction and replacement,with the national annual shale gas production reaching 278×108 m3 in 2025,and China remains the world's second largest shale gas producer.Second,the principal Upper Ordovician Wufeng-Lower Silurian Longmaxi Formation shale is characterized by high thermal maturity,strong heterogeneity,and ultra-high pressure.The development focus shifts to deep and ultra-deep reservoirs,the drilling evolves toward great vertical depths,long horizontal sections,and optimized fast drilling,and the fracturing upgrades to dense-cutting,high-intensity precise stimulation.Third,the development philosophy shifts from pursuing initial high production to managing pressure for stable production.In this way,the gas-well production decline is under effective control,and the single-well recoverable reserves are guaranteed.Fourth,substantial breakthroughs are achieved in two major replacement strata,namely the Cambrian Qiongzhusi Formation and the Permian Wujiaping Formation,which unlocks trillion-cubic-meter-scale resource potential for medium-and long-term reserve and production increase.In conclusion,the shale gas development in China shows great potential in middle-and long-term growth,and will continue to evolve towards a deep,beneficial,intelligent and green transformation.Driven by the stable production from major strata and the productivity construction from new strata,shale gas will maintain stable production increase and present promising development prospects.