The reservoir of thrust belt was mainly of pore-fracture type, dissolved pore, fracture and a little primary pore are mainly interstice of the reservoir.

• 该区发育有4个构造带：前陆冲断带储层类型为孔隙-裂缝型，以溶蚀孔和裂缝为主，见少量原生残余孔；