RESERVOIR MODEL OF CARBONATE BURIED-HILL IN RIFTED BASIN—TAKING THE JIYANG DEPRESSION AS AN EXAMPLE

Carbonate buried-hill of rifted basin has 3 basic types of reservoir: fracture,corrosion and pore space.Each type has its specific forming mechanism and distribution rule.Various reservoirs assemble to form combinational solid reservoir model in space.It can be divided into weathered crust filtered belt,vertical seepage belt,horizontal corrosion belt,internal pore space belt,fracture corrosion belt and structural fracture belt.