摘要
为揭示打通区块煤层气基本地质特征及主要控气因素,基于区内煤田钻孔、煤层气钻井取得的地质资料、测井资料和实验测试数据,对煤储层煤岩煤质、渗透率、含气性等进行了分析。研究表明:该区块煤层气具有"一多一薄、两高低"特征,即煤层层数多、厚度薄、孔隙度低、渗透率低、变质程度高、含气量高等,具有较好的勘探开发前景;区内煤层气富集主要受沉积、构造作用和水动力条件耦合作用控制。
To reveal CBM basic geological features and main gas control factors in the Datong block, on the basis of geological, well logging and testing data from coal and CBM boreholes in the area, carried out analyses for coal petrology, quality, permeability and gas -bearing property. The study has shown that CBM in the block has features of multi - reservoir, thin single layers, low porosity and permeability, high degree of metamorphism and gas content etc. with better exploration and exploitation prospect. The CBM enrichment in the area is mainly controlled by coupling of sedimentation, tectonization and hydrodynamic conditions.
作者
郭东鑫
张华莲
王晋
张跃磊
Guo Dongxin;Zhang Hualian;Wang Jin;Zhang Yuelei(Chongqing Exploration Engineering Technological Research Center for Shale Gas Resources(Chongqing Institute of Geology and Mineral Resources),Chongqing 400042;State Key Laboratory of Coal Resources and Safe Mining Chongqing Center,Chongqing 400042)
出处
《中国煤炭地质》
2018年第7期25-27,83,共4页
Coal Geology of China
基金
国家自然科学基金项目"页岩气储层低频脉冲水力压裂增渗机理研究"(51304258)
重庆市国土资源和房屋管理局科技计划项目"松藻矿区煤体结构定量评价技术研究"(KJ-2017008)
关键词
打通区块
煤层气
控气因素
Datong block
CBM
gas controlling factor