Citation:
LIU De-Xin, ZHAO Xiu-Tai, QIU Guang-Min, YUE Xiang-An. Behavior of Viscoelastic Surfactant Based Gel[J]. Chinese Journal of Applied Chemistry,
;2008, 25(7): 865-867.
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The system of viscoelastic surfactant (VES-Y) was formed with potassium oleate and potassium chloride,and the viscoelastic gel (VES-G) was formed by the addition of a crosslinking agent (N,N'-methylene diacrylamide) and an initiator (sodium supersulphate) to VES-Y and heated for 24 h at 60℃ under nitrogen.The properties of VES-Y and VES-G were evaluated in terms of temperature tolerance,shear thinning,sensitivity to hydrocarbon,breakdown and damage to permeability.The results showed that VES-G was less sensitive to hydrocarbon and had an improvement on its temperature tolerance and shear thinning.VES-Y and VES-G both exhibited the same breakdown propertities.In addition,VES-G showed no damage regained permeability over 99 percent after breakdown by core flow experiments.
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Keywords:
- viscoelastic surfactant,
- gel,
- micelle,
- viscosity,
- potassium oleate,
- permeability
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