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,为奥陶系碳酸盐岩溶蚀缝洞孔
系,流
呈层状分
(
中分
于奥陶系峰峰组和
马家沟组
段)。