Abstract:Fractures in fractured gas reservoirs are the main contributors to the gas well productivity, which is influenced greatly by the shape and location. The gas well productivity model of traditional fractured gas reservoirs is mostly based on the equivalent continuum theoretical model, and the shape and location of reservoir fractures are not considered. Based on the equivalent percolation resistance method, this paper fully considered the influence of fracture shape and location on the productivity of gas wells. This paper used the radial permeability of fracture microelement to characterize the contribution of fractures to gas well productivity, and finally derived a new method for calculating the productivity of fractured gas reservoirs. Based on the example calculation, it is found that the new method can accurately predict the gas well productivity. The fracture length of the fractured gas reservoirs has little effect on the gas well productivity, but the fracture deflection angle, the distance between fracture and gas well have a great influence on it. With the fracture deflection angle, the distance between fracture and gas well gradually increasing, the absolute open flow potential of the gas well is gradually reduced, and the decreasing range is continuously reduced.