大倾角地层煤层气钻井
CBM well boring in strata at great inclination
煤层气生产试验井
CBM production testing well
煤层气潜力
coalbed methane potential
煤层气排采
CBM well extraction
Coal-bed Gas Mining and Drainage
CBM extraction
煤层气勘探开发
CBM exploration and development
煤层气勘探
coalbed methane exploration
CBM exploration