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《Journal of Daqing Petroleum Institute》 2006-01
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Polymer flooding experiment in transitional zone in Daqing oilfield

HUANG Mei(Oil Recovery Plant No.3,Daqing Oil Field Corp.Ltd.,Daqing,Heilongjiang 163113,China)  
The high viscosity,wax and gelatine of crude oil in transitional zone make it difficult to increase oil recovery by only water flooding displacement.This paper analyzes the dynamic characteristic changes of oil displacement of polymer flooding field test in main zone of transitional belt and deals with the swept oil reservoir and displacement efficiency.The test showed that central area in the polymer flooding of the main zone of transitional belt could increase by over 8% OOIP;polymer flooding enlarged the swept volume and increased the swept oil reservoir.Compared with the polymer flooding of pure oil zone ,the increasing amplititude of injecting pressure and the decreasing amplititude of liquid production in the main zone of transitional belt is also large.
【CateGory Index】: TE357.46
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