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而成的残丘山,储集体为奥陶系碳酸盐岩
洞孔体系,流体呈层状
布(集中
布于奥陶系
和上马家沟
上段)。