The formation of carbonate reservior is controlled by the overlaid C-P strata and the intensity of karstification which was related to the palaeo geomorphy and palaeodrainage system.

• 下古生界碳酸盐岩裂缝-溶蚀型储集层的发育特征以有无上古覆盖是岩溶发育的前提；古地貌、古水系控制岩溶发育强度。