煤层气回收利用
recovery and utilization of coal-bed gas
大倾角地层煤层气钻井
CBM well boring in strata at great inclination
含吸附煤层气煤
adsorbed methane-coal system
煤气回收
gas recovery
gas reclamation
gas collection
coal gas recover
gas recycle
gas recycling
recovery of gas
coal gas recollection
ultimate value of recovery
煤气回收效率
gas recovering efficiency
油气、煤层气还原作用
reduction by oil-gas and coalbed gas
变组分煤层气
Various component coal bed methane
various components coal bed methane
低煤阶煤层气
low-rank coal-bed methane