The reservoir rocks are Archaean granite, Lower Paleozoic carbonate rocks,Mesozoic sand rock and volcanic rock and fracture,solution cavities and pores are the major preserving spaces.

• 储集层由太古界变质岩、下古生界碳酸盐岩和中生界砂岩、火山岩组成,储集空间主要为构造裂缝及溶蚀孔隙;