残丘

It's a residual mountain(unaka) which were a set of thrust blocks under the erosion unconformity.It's reservoir pore space is a fracture-vug-pore system of Ordovician carbonate karst.

该气藏的构造为道冲构造侵蚀而成的残丘山,储集体为碳酸盐岩溶蚀缝洞孔体,流体呈层状布(集中布于峰峰和马家段)。