These reservoir rocks interpreted as pore-fissure reservoir rocks consist of sandstones and conglomerates of gravity flow origin and marls of mixed origins.

• 指出研究区储层原生孔隙不发育，以孔隙-裂缝型储层为主，储集空间以次生溶孔和裂缝为主，渗滤通道主要是裂缝，属特低孔特低渗储层。