沁水盆地南部地质条件及其煤层气成藏优势分析  

Geological Conditions and CBM Accumulation Predominance Analysis in Southern Qinshui Basin

作　　者：赵伟伟 

机构地区：[1]中煤地质工程总公司资源勘查分公司,北京100161

出　　处：《中国煤炭地质》2009年第A01期19-21,共3页Coal Geology of China

摘　　要：根据构造地质及煤层气成藏基本理论及分析方法,对沁水盆地南部地质条件进行了分析,并研讨了该区煤层气成藏优势,主要表现为:煤层厚度大且分布稳定,主采煤层与泥岩及灰岩组合,形成了天然封盖条件;三叠纪末煤层的最大埋深及燕山晚期的热事件,为煤层气成藏提供了良好的生气条件;区内总体构造不发育,煤储层保持了较好的结构,储层物性好;煤储层与盖层天然裂隙发育。Based on structural geology and CBM accumulation basic theory and analysis method, analyzed geological conditions in southern Qinshui Basin and discussed CBM accumulating predominance in the area. Main presentations have： stable coal seams and large thicknesses; main coal seams combined with mudstone, limestone formed natural bounding condition; maximum buried depth during the end of Triassic and late Yanshanian tectothermal event provided good gas generating condition for CBM accumulation; structures are not very developed in the area as a whole, thus better coal reservoir frame and physical properties have retained; natural fractures are very developed in reservoir and caprock.

关 键 词：煤层气 地质条件 成藏优势 沁水盆地南部 

分 类 号：P618.11[天文地球—矿床学]