煤储集层是一种特殊的储集层 ,其孔隙特征、渗流能力、吸附能力等主要受煤的原始组分、变质程度两大因素控制 ,煤层作为储集层时所表现出的特殊性 ,与常规砂岩储集层在生储气方式、生储气能力、开采范围和方式、储层孔渗性等方面存在许多不同之处 ,全面了解和认识二者的特性 ,对于正确评价煤气层有一定的指导意义 The coal reservoir is a special type of reservoir. Its pore characteristics, seepage ability and adsorption capacity are mainly controlled by the two factors of the original components and metamorphic degree of the coal. The coal seam, as a reservoir, shows its particularity , Which has many differences with conventional sandstone reservoirs in terms of raw gas storage, gas storage and recovery, mining range and mode, reservoir porosity and permeability and so on, so as to fully understand and recognize the characteristics of the two reservoirs, Have some guiding significance