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从地层、层序、构造、地球化学和岩石学等方面研究了孤岛潜山下古生界碳酸盐岩缝洞性储层。储层储集空间主要有晶间孔和晶间溶孔、粒间孔和粒间溶孔、铸模孔、砾内—砾间孔和砾内—砾间溶孔、溶洞、溶蚀缝和构造缝等。下古生界碳酸盐岩缝洞体系有沉积期、准同生期、成生期、表生期,后生期和进后生期(深埋藏)缝洞体系。碳酸盐岩缝洞系统形成的主要控制因素是沉积相、岩石类型、构造、层序界面和水—岩作用。孤岛潜山下古生界碳酸盐岩缝洞系统具多类型、多成因和多期次叠加的特点。
From the aspects of stratigraphy, sequence, tectonics, geochemistry and petrology, the research on the Palaeozoic carbonate rock fractured-cavity reservoirs in the isolated island buried hill. The main reservoir space is intergranular and intergranular dissolved pores, intergranular and intergranular dissolved pores, mold holes, gravel-gravel interbedded pores and gravel-intergranular dissolved pores, karst caves, erosion and structural joints Wait. The Lower Paleozoic carbonate rock fracture-cave system has sedimentary period, quasi-syngenesis, mature stage, epigenetic stage, epigenetic stage and advanced stage (deep buried) fracture-cavity system. The main controlling factors of formation of carbonate cave system are sedimentary facies, rock type, structure, sequence boundary and water-rock interaction. The buried hill system of the Lower Paleozoic carbonate rock fracture system has the characteristics of multi-type, multi-genesis and multi-period superposition.