As one of the main ways of coalbed methane development, the gas production effect of coalbed methane wells is crucial. The development of coalbed methane wells in Wuyang mine area was taken as an example, the gas production effect of coalbed methane wells under different fracturing methods, fracturing process and sand addition method was systematically analyzed. The results showed that among the four fracturing methods,active water, liquid nitrogen injection, nitrogen foam and guanidine gel, active water fracturing had the best gas production effect in CBM wells; compared with individual fracturing, synchronous fracturing improved the overall permeability of the coal seam and had a better effect on increasing permeability; compared with ordinary sand addition, secondary sand addition and segmental plug sand addition had a long support distance and high sand laying concentration, which increased artificial fractures and provided a channel for CBM production. The segment plug sand addition method had the best effect among the three sand addition methods. This study showed the direction for the construction of subsequent CBM wells.
李思齐. 五阳矿区煤层气井开发效果分析[J]. 煤炭与化工, 2021, 44(1): 106-108,112.
Li Siqi. Analysis of coalbed methane well development effect in Wuyang Mining Area. CCI, 2021, 44(1): 106-108,112.