摘要
煤储层渗透性是影响煤层气开发选区和产量最重要的因素,运用资料查阅、文献综合研究等方法,分析了煤层变质、煤层厚度、煤体结构、构造曲率等因素与煤储层渗透率之间的耦合关系,结果表明,煤储层具有双重孔隙结构,割理裂隙的发育程度直接影响煤层渗透率的大小,天然裂隙的发育密度与煤岩类型条带或分层厚度呈负相关。
The permeability of coal reservoir is the most important influencing factor for choosing favorable area and production ot eoalbed methane, this article takes a detailed analysis of coal rank, thickness of coal seam, coal structure, construct curvature, effective stress, Klingberg effect and matrix shrinkage effect on reservoir permeability with comprehensive information consulting, lit- erature review methods. The results show that coal reservoir is dual pore structure; the degree of development of fracture directly influences the size of the coal seam permeability. The growth of natural fracture density and lithotype band or negatively correlate to the layer thickness.
出处
《重庆师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2014年第2期100-104,共5页
Journal of Chongqing Normal University:Natural Science
基金
国家自然科学基金(No.40972225)
关键词
煤储层渗透率
孔裂隙系统
动态变化效应
coal reservoir permeability
system of pore and fracture
effect of dynamic changes
