采动影响稳定区煤层气储层特征及描述内容

Reservoir Characteristics and Description Content of Coalbed Methane in Mining Influence Stability Zone

基于传统意义的煤层气储量评估和采动稳定区煤层气储量评估的定义,分析了二者之间的区别和联系,认为采动稳定区煤层气储量评估的研究重点是煤层采动卸压影响范围、煤层气有效来源以及煤层气储层特性等各项参数。从储层定义出发,讨论了采动稳定区煤层气储层描述内容,认为其主要包括几何形态及边界条件、物理化学组成、储层结构及裂隙、储气性、流体性质和储层孔渗特性等6个部分,并详细论述了各自的主要内容。

After analyzing difference and relationship between reserves evaluation technology about traditional CBM and mining influence zone methane,the paper finds that the study emphasises of methane reserves evaluation technology in mining influence zone are mining pressure relief range,gas sources and methane reservoir characteristics.Extended from definition of reservoir of coalbed methane,the paper researches the reservoir reservoir description content about coalbed methane in mining influence zone,and presents the most key contents such as geometry and boundary conditions,physical and chemical component,the reservoir structure and fracture field,storage capacity of reservoir,fluid properties in reservoir and porous medium characteristics about reservoir,and discusses the respective main content in detail.