Research and Application of Enhanced Oil Recovery Technology after Polymer Flooding of Conventional Heavy Oil
In view of the situation that the remaining oil distribution after polymer flooding is more scattered and the development contradiction is more prominent,the micro-interface flooding technology is studied to make up for the deficiency of polymer flooding by injecting an efficient oil flooding system,based on the comprehensive evaluation of its main performance indexes in laboratory experiments,the injection and production parameters are optimized and field tests are carried out in 4 well groups.The daily increase in oil production is 17.6 tons,with a 6.0%decrease in water content,and the efficiency of the well is 82%.The natural decline rate has decreased by 19.1%,and the oil recovery rate is expected to increase by 3.1 percentage points.The research and application of micro-interface flooding technology provide a reliable technical support for improving the post-development effect of conventional heavy oil polymer flooding,and has a good reference significance.
polymer floodingconventional heavy oilmicro-interface flooding technologyrecovery rate
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