The Reasonable Injection-production Parameters Research Of Asp Flood In The Class â…¡ And â…¢ Reservoirs Of The East Of The Fault Block In Beiyi District

Under the combination development condition of class 2 and class 3 oil layers, East Area of North First Segment of Daqing Oil Field adopted two sets of well pattern, and was divided into two sets of layer series, which conducted weak base asp flooding development on class 2 and class 3 oil layers at the same time with the advantages of same period,synchronization, divided medium injection, sharing pressure, perfect injection-production and high control degree. Therefore, it conducted asp flooding numerical simulation research with same period and divided medium on class 2 and class 3 oil layers.On the base of geologic modeling, firstly, it conducted water flooding stage history matching, through matching all the areas’ pressure, moisture content, single well’s mo isture content, cumulative oil production, single well’s daily oil production and other i ndexes, thus made the established model in accordance with the actual migration rule of oil-water in reservoir.Based on water flooding simulation, applied CMG software component simulator(STARS) to conduct asp flooding numerical simulation research, then conducted overall consideration on all kinds of physical and chemical reactions during asp flooding pro cess: adsorption, reducing interfacial tension, inaccessible pore volume, etc. of each co nstituent of three-component system.Through the selection on system parameters of asp flooding(system viscosity, inter facial tension, component adsorption) and injection-production parameters(injection-pro duction rate, injection speed, injection pressure), considered the influence of combinati on of different slug sizes and different concentrations of components on the efficiency of asp flooding, thus researched the feasibility of flooding fluid in synchronization an d different mediums with three-component compound system on class 2 and class 3 oi l layers, and then optimized the best oil flooding project.