Quantitative Study On Parameters Of Stopping Injection And Accumulation Of Two Kinds Of Oil Reservoirs In X Block

Polymer flooding as a kind of method to enhance oil recovery,has entered the stage of industrial application from field trials,the technology is more widely in the daqing oilfield,shengli oilfield of popularization and application,has obtained the good economic benefits.This paper,by using polymer flooding production static data,combined with fine sedimentary facies digital research results,using Petrel three-dimensional geological modeling software to establish the corresponding structural model and property model.Application to Eclipse numerical simulation software of geological model is set up by history matching stage of water flooding and polymer flooding stage,in the stage of water flooding and polymer flooding stage,on the basis of history matching,conducting polymer flooding numerical simulation research,for the determination of polymer injection timing.Stop polymer injection in reservoir engineering methods research evaluation parameters,the grey correlation analysis method is the first principle of the optimization parameter analysis,fuzzy comprehensive evaluation method to calculate comprehensive evaluation coefficient value,finally to establish evaluation system of polymer injection.Determine the reasonable timing of the stop,and give the boundary value of the parameters.Using numerical simulation method or reservoir engineering method,the water together with displacement under different intensity of injection-production parameters such as moisture content,oil production,the relationship between optimization water injection intensity and strength than the polymer injection.Research stopped after the polymer injection of moisture content and oil content under different intensity of injection-production parameters,the relationship between optimization water injection intensity and polymer injection intensity ratio,according to the optimization of polymer injection timing,development index prediction station stop after polymer injection.