郑庄区块煤层气赋存特征及控气地质因素  

Analysis of the coal bed methane occurrence characteristics and gas-controlling geologic factors in Zhenzhuang block

作　　者：曹新款[1] 朱炎铭[1] 王道华[1] 赵雯[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤田地质与勘探》2011年第1期16-19,23,共5页Coal Geology & Exploration

基　　金：国家科技重大专项课题(2008ZX05034-04);国家自然科学基金重点项目(40730422)

摘　　要：沁水盆地南部郑庄区块煤层气资源条件良好,勘探开发潜力大。通过对郑庄区块煤层气地质条件和储层条件的深入分析,认为本区煤层气赋存条件良好,含气量较高,储层吸附/解吸能力较好,但储层渗透率相对较低;郑庄区块煤层气藏主要受3类地质因素控制:构造对煤层气含量和赋存规律具有明显的控制作用;水文地质条件对煤层气具明显的水力封闭作用,该区地下水径流较弱,为典型的等势面扇状缓流型,有利于区块内煤层气的富集;燕山晚期岩浆活动和高异常地热场对煤层热演化和煤层气生成有显著的控制作用。There exist good conditions of coalbed methane（CBM） resources condition in Zhengzhuang block in the south of Qinshui basin and great potential for exploration and development.After deeply analyzing the geological and reservoir conditions of Zhengzhuang block,it is believed that there are good occurrence conditions for CBM in this area,the gas content is high and the reservoir has good adsorption and desorption capacity,but the permeability is low.The coal gas reservoir is controlled by three geology factors.Among which,the structures obviously control the occurrence of CBM and the gas content,the hydrogeological conditions have an apparent effect on the coal-bed gas.In the area,the radial flow of ground water is weak and belongs to typical equipotential slow fan flow,which is favorable for CBM accumulation.Igneous activity in Late Yanshan and abnormal geothermal field obviously controlled the thermal evolution of coal and coalbed methane.

关 键 词：煤层气 构造 水文地质 煤化作用 郑庄区块 

分 类 号：P618.11[天文地球—矿床学]