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- W222510189 abstract "This paper deals with the screening of a number of alkaline reagents for potential application in the waterflooding of heavy oil reservoirs at moderate temperatures. Sodium hydroxide, sodium metasilicate and sodium orthosilicate were all screened in accordance with a novel methodology that is based on physical and interfacial property measurements for selecting the most appropriate alkali for a target crude. The experimental oil was a Saskatchewan crude with an acid number of 1.88 mg KOH/g oil and a viscosity of 475 mPa.s at 25{degrees} C. The interfacial tension between this oil and distilled water was measured at various temperatures ranging from 25{degrees} C to 75{degrees} C. These tension values were relatively unaffected by changes in temperature as well as by the contact time between the two phases. However, the viscosity of the oil decreased by 87% when the temperature was raised from 35{degrees} C to 75{degrees} C. The addition of small quantities of the alkaline reagents (up to a maximum concentration of 500 mM in salt-free water) resulted in significant reductions in the interfacial tension." @default.
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- W222510189 date "1992-01-01" @default.
- W222510189 modified "2023-09-27" @default.
- W222510189 title "Effects of temperature and alkali concentration on the dynamic interfacial tension between heavy oil and alkaline solutions" @default.
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