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,储集为奥陶
碳酸盐岩溶蚀缝洞孔
,
呈层状
(集中
奥陶
峰峰组和上马家沟组上段)。