The Research Of Evaluation Of Effect Of Polymer Injection And Other Measures In SZ36-1 Oil Field Research

SZ36-1 oil field I phase has experienced nearly 10 years of polymer injection test,Polymer injection test is mainly composed of single well experiments,the polymer injection well group test and field expanding test.The various stages of test has achieved obvious production characteristics of polymer flooding and good flooding effect as well.A series of polymer flooding efficiency measures such as the extraction of oil wells and acidizing of water injection well and profile ect.At the same time,the work for adjusting the exploitation that contain encrypt well pattern and changing the way of water injection was carried in the polymer flooding area.At present,reservoir rapid water cut rising and there is still a large part of the remaining oil has not been mined out in spite of the end of the polymer injection.Therefore,evaluate the effect of prior polymer flooding and division of oil production by polymer flooding which contains all kinds of measures for increasing production.According to the characteristics of typical offshore oil reservoir and its remaining oil distribution,the comprehensive development-adjustment scheme of water flooding and polymer flooding were simulated and compared to selection of optimum development plan within secondary recovery technology.As an earlier development and technology mature oil field in china,the research of SZ 36-1 oil field can provide technical basis for other offshore oilfields.This article split incremental oil from measures taken through the method of combination of numerical simulation technology and reservoir engineering.The contribution of increasing oil content in water flooding process: the encryption and the liquid extraction greater than encryption greater than liquid extraction.Using eclipse numerical simulation software getting the best virtual water flooding development solution is the comprehensive development solution for the water drive encryption and extraction and subdivision layers system.Compared with the water flooding based scheme,the proposed scheme increases the oil production by 9 million 350 thousand illion cubic meters,and increases the oil recovery by7.91%.The best virtual polymer flooding development solution is the comprehensive development solution for the polymer drive encryption and extraction and subdivision layers system.Compared with the polymer flooding based scheme,the proposed scheme increases the oil production by 15 million 350 thousand cubic meters,and increases the oil recovery by12.98%.