湖北省煤层(成)气资源量预测

RESOURCE PREDICATION OF COAL-BED(DERIVED)GAS IN HUBEI PROVINCE

湖北省交通经济较发达 ,能源相对紧张 ,开发利用省内煤层 (成 )气资源已十分必要。湖北省主要发育有三套煤系 ,即下二叠统梁山煤系、上二叠统龙潭煤系、上三叠—下侏罗统香溪煤系。梁山煤系和龙潭煤系煤岩变质程度较高 ,生气量大 ,赋存大量以吸附态为主的煤层气。香溪煤系煤质较差 ,极不稳定 ,但该煤系暗色泥、页岩发育 ,演化程度较高 ,有利于形成煤成气。资源量测算结果表明 ,煤层气主要分布于黄石、蒲圻、长阳、荆当等矿区 ;而煤成气资源量以当阳复向斜最大。经综合对比分析 。

It is necessary to develop and utilize the coal derived gas resource in Hubei province,as the economy growing and the energy shortening of the province.3 sets of coal series are mainly grown in Hubei province.They are Liangshan stage of Early Permian series,Longtan stage of late Permian series and Xiangxi stage of Early Jurassic-Late Triassic series.The metamorphic grade is high and the gas production is big for the coal rock of Liangshan and longtan stages in which there is great coal bed gas mainly with absorption way.The coal quality of Xiangxi stage is not good and stable but the coal appears dark mud,well develops shale and has high evolution level,which is favorable to create coal derived gas.The results from resource predication indicate the coal bed gas distributes mainly in the mine districts such as Huangshi,Puxi,Changyang,Jingdang etc.and the coal derived gas mainly in Dangyang synclinorium.After comprehensive analysis,we suggest to take Shuangqiujingtian of Puxi Mine District as the pilot for development testing of coal bed gas.