Coal reservoir is a dual porous rock composed of matrix porosity and fracture with its unique cleat system.

煤储层是一种双重孔隙介质，其孔隙由基质孔隙和裂隙组成，并具有自身独特的割理系统。

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Finally, the model of matrix porosity and the evolution of permeability tensor of Microfracture for hydraulic fracturing rock is established.

最后，建立水力压裂岩体基质孔隙和微裂缝渗透张量演化模型。

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The pore spaces are mainly residual intergranular porosity, dissolution porosity in clastic rock reservoir, dissolution matrix porosity and fractures in volcanic reservoirs.

碎屑岩储层中主要的储集空间为剩余粒间孔隙以及在此基础上扩大溶蚀的孔隙；火山岩储层中则以火山岩基质溶蚀孔为主，构造缝、溶蚀缝次之。

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