Gas-bearing carbonatite of marine facies is the main pay reservoirs of Feixianguan Formation of Triassic, Changxing Formation of Permian and Huanglong Formation of Carboniferous.

• 建南气田的主要产气层是三叠系飞仙关组、二叠系长兴组和石炭系黄龙组海相碳酸盐岩储集层。