晋城煤层气分布和主导因素的再认识  

The renewed understanding for the distribution of coalbed methane and the controlling factor in Jincheng

作　　者：李贵红[1] 张泓[1] 张培河[1] 晋香兰[1] 牟全斌[1] 

机构地区：[1]煤炭科学研究总院西安研究院,陕西西安710054

出　　处：《煤炭学报》2010年第10期1680-1684,共5页Journal of China Coal Society

基　　金：国家重点基础研究发展计划(973)资助项目(2006CB202200;2009CB219602);国家科技重大专项课题(2008ZX05040)

摘　　要：收集到晋城地区169组含气量及其它相关测试数据,对采集的65个气井排采水样进行了全水质化验,通过相关性分析,探讨了含气量与煤的热成熟度、煤储层埋深、厚度、围岩封闭性等因素的关系,并在分析地下水等水位线和水化学特征基础上确定了水动力分区,探讨了含气量与水动力条件之间的联系。结果表明,这些传统意义上界定的影响含气量的因素决定了晋城煤储层含气量整体上较高,但与其在区域上的分布规律并无相关性,进一步证实地下水动力场通过控制储层压力的分布而控制着煤层气的聚集,成为影响晋城含气量区域分布的主导因素。研究表明,不仅潘庄是煤层气富集区域,而且寺头断层以西的郑庄一带同样是勘探开发的有利区域,建议加大勘探力度。169 sets of data and other interrelated information were collected and 65 groups of water samples were tested.By correlative analysis,the relationship between gas content and coal rank,the reservoir depth,thickness,and the trapping of adjacent rock were analyzed,on the basis of water table isoline and chemistry water,dynamic areas was divided,and the relation between gas content and water dynamic condition was discussed.The result shows that the influence factors considered traditionally only determine the overall high gas content in Jincheng,with no correlation to the areal distribution of gas content,and confirms that underground water dynamic field controls the gas gathering by controlling reservoir pressure,which is the main factor of CBM distribution.Not only Panzhuang area,but also Zhengzhuang is the favorable CBM area in the west of Sitou fault,and it is necessary to enhance the CBM exploration degree for area in the west of Sitou fault.

关 键 词：晋城 煤层气 主导因素 含气量 地下水动力场 

分 类 号：P618.11[天文地球—矿床学]