Adaptability of Reservoir for the Re-injecting Polymer-bearing Sewage

Geoscience ›› 2006, Vol. 20 ›› Issue (4): 641-646.

• Engineering Geology and Environmental Geology • Previous Articles Next Articles

Adaptability of Reservoir for the Re-injecting Polymer-bearing Sewage

YIN Yin^1,2,3, LIU Da-meng¹, HUANG Jin-feng³, WANG Jin-zhan²

1 School of Energy Resources, China University of Geosciences, Beijing100083, China;
2 CNPC International Research Center, Beijing100083, China;
3 No.3 Oil Production Company of Daqing Oilfield Co.Ltd, Daqing, Heilongjing163003, China

Received:2006-01-10 Revised:2006-05-30 Online:2006-04-20 Published:2006-04-20

Abstract

Abstract:

Through analyzing the molecular properties of polymer and component changes after disposal of polymer-bearing sewage produced by polymer flooding, it is considered that polymer concentration is a key factor to lower the permeability of reservoir. The results from the core displacement test show that the adaptability of reservoir with different permeabilities for the polymer-bearing sewage with different polymer concentrations is different. It is proposed to choose suitable polymer concentration for different types of injection water. The research result has a significant reference for utilizing this kind of sewage water and studying the standard of injection water after polymer-flooding.

Key words: polymer-bearing sewage, polymer flooding, molecular property, polymer concentration

CLC Number:

TE34

YIN Yin, LIU Da-meng, HUANG Jin-feng, WANG Jin-zhan. Adaptability of Reservoir for the Re-injecting Polymer-bearing Sewage[J]. Geoscience, 2006, 20(4): 641-646.

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Adaptability of Reservoir for the Re-injecting Polymer-bearing Sewage

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