To address the serious problem of coal powder production in the Shizhuang South Block of the Qinshui Basin,coal powder solution samples were continuously collected from 20 coalbed methane wells.The coal powder production characteristics,such as concentration,particle size,morphology,and main components,are obtained through laboratory testing.Through systematic research on the influencing fac-tors of coal powder production characteristics,it is found that the correlation coefficient R2 between coal powder concentration and coal body structure is 0.707,indicating a strong correlation;The average con-centration of coal powder in horizontal wells is 2.85g/L,while the average concentration of coal powder in directional wells is 0.36g/L,indicating a difference of 8 times.The coal body structure is the main geological factor controlling the production of coal powder,and the well type is the main engineering fac-tor.The research results provide experimental data and theoretical guidance for studying the coal powder production laws and controlling measures in the coalbed methane wells of Shizhuang South Block.
Coal powder production characteristicscoal body structuremain controlling factorsShizhuang South Block
维普
万方数据
