摘要
By the methods of scanning electron microscopy,rock thin section, cast thin section, microscopic fluorescence and conventional murcury injection and so on,the characteristics of microscopic pore structure of Triassic sandstone reservoir in Dongpu Depression were studied. The research shows that the fracture and microfracture were developed well in Triassic sandstone reservoir of Dongpu Depression, the pore system is composed of the rock matrix pores and the fracture-cave pores, which are the effective pore of hydrocarbon storage.