强边水小断块油藏聚驱后期开发技术对策研究

doi:10.13809/j.cnki.cn32-1825/te.2020.06.011

Abstract

Abstract:

In order to solve the problems of decline continues to increase,carry out the research on the factors affecting the development effect of polymer flooding in the later stage.There are some problems in the small faulted block reservoir He Er Duan of Shuanghe Oilfield, such as strong edge water energy shows low efficiency, irregular well pattern leads to fluid channeling,formation plugging results in a large drop in well fluid production and so on.In order to improve the development effect of polymer flooding in later stage and further enhance oil recovery.Studing the effect of cluster displacement under different injection-production parameters by numerical simulation technology,define reasonable injection-production ratio. The inhibition effects reserched single point cross-flow in different injection-production way by numerical modeling, and draw the best way. Study on radius of oil congestion in polymer flooding stage and come up with reasonable countermeasures,good field application effect had been taken.

Key words: strong edge water, polymer flooding, numerical simulation, improve the development effect, small fault-block reservoir

CLC Number:

TE357

ZHANG Lei,JIA Lan,ZHANG Daolian. Developing technical countermeasures in the late stage of polymer flooding in small fault block reservoirs with strong edge water[J].Reservoir Evaluation and Development, 2020, 10(6): 72-77.

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年份	生产压差/MPa	累积产油/10⁴ t	累积产水量/10⁴ m³	地层亏空/10⁴ m³	累积水侵量/10⁴ m³
1987	-1.02	5.70	8.78	18.80	15.65
1992	-0.55	11.60	55.48	76.46	69.08
1997	-1.13	17.33	148.07	186.94	168.46
2002	-1.98	24.56	295.39	360.95	324.40
2007	-2.66	32.05	557.29	639.75	595.15
2011	-2.30	36.01	777.70	866.67	820.06

Developing technical countermeasures in the late stage of polymer flooding in small fault block reservoirs with strong edge water

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