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Offshore oil generally has a large reservoir porosity , high permeability , strong heterogeneity , high oil viscosity , high temperature and high salinity , etc. , if the land is usually implemented in the early oilfield waterflood development way, not only consumption duration and waterflood efficiency is low. In order to shorten the development cycle and improve oilfield oilfield overall development effect , this article from the actual needs of offshore oilfield development , combined with reservoir geology and fluid nature of the characteristics of the polymer gel system weak performance filters , and filter out the polymer and Cr 3 polymer weak gel viscosity property characteristics , rheological and viscoelastic indicators were evaluated. The results show that the well water quality conditions , Cr 3 polymer molecules can form a \. On this basis , the use of indoor physical simulation methods, 35-2 oilfield early implementation Cr 3 polymer gel flooding technology transfer and economic effects were studied. The results showed that the early implementation of the Cr 3 polymer gel oilfield control and flooding not only shorten the development cycle , saving operating costs, and ultimate recovery has drastically increased . In addition , Cr 3 polymer gel injection timing , dosage and polymer concentration on the direct impact on the oil displacement effect . Injection timing sooner , the greater the amount of weak gel and polymer concentration the higher the rate of pressure rise larger swept volume the better the effect , the greater the decrease in moisture content , the better the effect of increasing oil production . On the basis of research results in the interior , in the 35-2 oilfield implemented early Cr 3 polymer gel tune flooding tests. The results showed that , Cr 3 polymer gel can greatly improve the injection pressure , to improve suction section , the better able to see the effect of increasing oil precipitation .
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