Physical Sciences and Mathematics Commons^™

Study On The Main Controlling Geological Factors Of High Yield Deep Cbm In Southern Yanchuan Block, Gao Yuqiao, Li Xin, He Xipeng, Chen Zhenlong, Chen Gang

Coal Geology & Exploration

The Southern Yanchuan Block belongs to a deep, high-rank coalbed methane(CBM) reservoir. Due to the influence of geological conditions, the single well productivity varies greatly. Researching on the main controlling geological factors and their changing mechanism of CBM accumulation, combined with the dynamic data of CBM development, the main controlling geological factors of the CBM well enrichment and high production are analyzed. The research results show that the productivity of the gas field is controlled by the geological factors of “tectonic, hydrology, coal structure”. Tectonic restricts the accumulation of CBM; the degree of salinity characterizes affects the preservation of CBM; …