开平-涧河地区煤层气成藏条件评价  

EVALUATION OF POOL FORMING CONDITION FOR COALBED GAS IN KAPING JIANHE REGION

作　　者：范文科[1] 郑红菊[1] 陈蕾[1] 

机构地区：[1]中国石油冀东油田,河北唐山063004

出　　处：《石油与天然气地质》2000年第4期321-323,共3页Oil & Gas Geology

摘　　要：开平涧河地区位于河北省唐山市境内 ,是一个由古生界、中生界及新生界叠合而成的构造盆地。盆内古生界含煤 2 0余层 ,可采及局部可采 9层 ,由东南向西北累积厚度逐渐增大。全区煤层有机碳含量均较高 ,显微组分以镜质组为主 ,演化程度适中 ,多为气煤和肥煤 ,具有较强的生气能力。开平向斜由东南向西北 ,埋深逐渐增加 ,煤层含气量增大 ,变质程度加深 ,吸附量也随之变大 ,显示该盆地西北地区具有较好的勘探前景。盆内煤层气具有较好的上覆盖层 ,埋深 80Kaping Jianhe region situated in the boundaries of Tangshan City is a basin superposed by Paleozoic,Mesozoic and Cenozoic sediments.The basin contains 20 coalbeds and 9 recoverable coalbeds,the cumulative thickness increases from southeast to northwest.The coalbeds contain rich organic carbon,microfabric is mainly vitrinite,the coals are gas coal and fat coal of moderate evolution with strong gas generatim ability.The buried depth of Kaping syncline increased from southeast to northwest,so as the amount of coalbed gas,the metamorphic grades and the amount of absorbed hydrocarbon.It suggests that the northwest part of the basin possesses favourable gas exploration prospects,and that the target beds are those buried deeper than 800 m.

关 键 词：煤层气 含气性 吸附性 开平-涧河地区 成藏条件 

分 类 号：P618.110.2[天文地球—矿床学]