大倾角地层煤层气钻井
CBM well boring in strata at great inclination
含煤地层特征
Coal-bearing Strata Characteristics
煤层气地质因素
coal bed gas geological factors
特征质地层
Characteristic texture layers
油气地质特征
petroleum geological feature
hydrocarbon geologic features
petroleum geologic features
Oil-gas geological features
Character of petroleum geology
Petroleum geological characteristics
含吸附煤层气煤
adsorbed methane-coal system
煤层地质储存
geological disposal in coalbed
煤层地质条件
coal seam geological conditions
煤层地质因素
factors affecting coalbed methane
煤层煤质
coal seam a nd coal quality
煤层特征
coal seam characteristics
煤质特征
characteristics of coal
The coal characteristic
late Paleozoic
coal quality
coal quality features
Coal character
coal quality characters
natural character of coal
Characteristics of Coal Quality
coal quality characteristic
coal quality character
coal characters
coal feature
Coal characteristics
Bara coalmine
coal quality characteristics
coal properties
Coal property characteristics