The Study On Reservoir Modeling And Numerical Simulation Of Fuyang Reservoir In X71 Experimental Area

Low permeability reservoir has the characteristic of tight reservoir, large seepage resistance, and low degree of producing reserves,therefore how to develop the low permeability reservoir reasonably, obtain good development effects and economic benefits has become one of the important problems of keeping the oil industry development stably.The Fuyang reservoir in X71 in experimental area is a low permeability reservoir and has been put into production for 3 years. In order to determine the reasonable development plan of experimental area, the well pattern optimization, the fracturing and well pattern matching optimization, the reasonable development technology policy are studied by numerical simulation in this paper; according to the parameter request of the reasonable development plan, the adaptability of the current well pattern development plan is evaluated, at the same time the shortcomings of the current well pattern are adjusted. Finally, we predict the development effects of the reasonable development plan. In the process of numerical simulation in this paper, adopt the local grid refinement method to simulate the artificial fracture length, flow conductivity and other parameters. Apply "threshold pressure" keyword to simulate the existence of start-up pressure. In the process of plan design, the reasonable well density and water injection mode are studied by different well distribution plan( different well spacing and well array spacing) and different water injection mode(inverted nine points pattern flooding, five points pattern flooding, linear water injection); the matching relation is studied from row direction and artificial fracture orientation, fracture length; the advanced water injection policy includes four aspects, there are the reasonable intensity of injection allocation, the keeping level of formation pressure, the reasonable injection-production ratio and oil recovery rate.In this paper, the study of the reasonable development plan can not only provide a theoretical basis and technical experience for the Fuyang reservoir, but also has a great significance to the oilfield sustainable development.