摘要
通过研究韩城矿区的煤体结构分布图以及矿区产气井的排采曲线,从单采井和合采井等不同角度综合分析了不同煤体结构对煤层气排采的作用。研究表明:原生煤结构致密、孔隙率低,内部绝大部分层理和割理为胶结闭合状态,原生煤储层不是煤层气开发的有利区域;碎裂煤内部裂隙广泛发育,张开度和连通性较好,包含碎裂煤的含气储层是煤层气开发的首选区域。
By studying the coal body structure distribution and the production curve of mining area in Hancheng mining area, comprehensive analyzes the role of different coal structure on the high rank CBM from different angles such as single production wells and production wells. Studies show that the native coal structure compact, low porosity, inside most of the bedding and cleat for cementing closed state,native of coal reservoir is not CBM development area; cataclastic coal internal crack widely development, opening and better connectivity, contains the cataclastic coal of coal reservoir is the first choice for coalbed methane development area.
出处
《煤炭技术》
CAS
北大核心
2016年第7期120-122,共3页
Coal Technology
关键词
构造煤
煤体结构
排采曲线
渗透性
tectonic coal
coal body structure
production curve
permeability