摘要
从煤厚、煤岩组成、煤级、煤体结构、裂隙系统、渗透性、吸附/解吸特性等方面对河南省的主可采煤层二1煤的煤层气的储层特征进行了详细论述.指出镜质组含量较高、割理比较发育、外生裂隙发育适中的原生结构煤和碎裂煤渗透性最好,是最有利的储层;外生裂隙发育适中的无烟煤是有利储层;碎粒煤为不利储层;糜棱煤为不可开发储层.临界解吸压力较高、含气量较高的中煤级煤分布区是煤层气勘探开发的首选地区.
The main factors which control coalbed methane exploration and development are coal thickness, maceral, rank, coal structure, fracture system, permeability and sorption/desorption. The coalbed methane reservoir of Ⅱ 1 in Shaixi formation of Henan province are described through these factors. The most favorable reservoir possesses middle rank, high vitrinite content, primary structure of fissure structure. The unfavorable reservoir possesses clactic structure. The coalbed methane can be developed from mylonitic coal reservoir. High critical desorption pressure and gas content will be favorable to coalbed methane development.
出处
《焦作工学院学报》
1999年第1期9-13,17,共6页
Journal of Jiaozuo Institute of Technology(Natural Science)
基金
国家自然科学基金
关键词
煤层气
储层描述
煤体结构
煤层气地质学
天然气
coalbed methane
reservoir description
coal structure
coalbed methane geology