Adaptability of Development Methods for Offshore Gas Cap Edge Water Reservoirs under Different Permeability Levels

The BZ 34-1 oilfield is a typical gas cap edge water reservoir in the Bohai oilfield. main characteristics of were multi-phase sand body stacking and was composed three parts: cap, oil reservoir, water. actual production site results show that permeability difference multi-layer bodies has serious impact on development effect. This article establishes model numerical based total recovery degree each layer, analyzes gradient. As gradient increases, all four well patterns decreases, gradually decreases. low layers high increases. decreases under different contents. reduction rate remaining saturation slower, while faster. By analyzing effect fields, we could further deepen our understanding reservoirs guide this type field.