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- W2364294744 abstract "In the alkali-polymer pilot test of Yangsanmu oilfield, scaling often led to surface pipeline plug and polymer degradation while preparing combination flooding system with produced sewage.A new active alkali with strong capacity of calcium and magnesium scale resistance and decreasing interfacial tension was adopted to prepare with produced water polymer.This paper discusses the oil-displacement capacity when different alkali matches with polymer, and whether binary system flooding can be carried out when viscosity of crude oil reaches 530 mPa·s.Research indicates that oilwater interfacial tension reaches magnitude of 10-3, and recovery factor with binary system flooding increases about 17% compared with pure water flooding, at oil viscosity of 530 mPa·s and alkali-polymer binary solution viscosity of 45 mPa·s prepared with produced water.Given crude oil viscosity and ultra-low oilwater interfacial tension, once the system concentration exceed technologic critical point, continuous increase of solution viscosity will not obtain the large increase of recovery factor.The research provides a powerful technical means for enhanced oil recovery with chemical flooding in the late stage of water injection development in ordinary heavy oil reservoir." @default.
- W2364294744 created "2016-06-24" @default.
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- W2364294744 date "2008-01-01" @default.
- W2364294744 modified "2023-09-26" @default.
- W2364294744 title "Laboratory test of active alkali-polymer binary combination flooding with produced sewage in heavy oil reservoir" @default.
- W2364294744 hasPublicationYear "2008" @default.
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