Well Treatment Fluid Containing Viscoelastic Surfactant and Viscosification Activator
AssigneeBJ Services Company
InventorsRichard S. Wheeler, Kay E. Cawiezel
Life of this patent
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Abstract
A well treatment fluid contains a viscoelastic surfactant and a viscosification activator. The viscosification activator enhances the viscosity of the well treatment fluid in contrast to a treatment fluid that does not contain a viscosification activator.
Claims25
A well treatment fluid comprising water or brine, a viscoelastic surfactant and a viscosification activator, wherein the viscosification activator is present in the well treatment fluid in an amount effective to initiate or increase viscosification of the treatment fluid, the viscosity of the well treatment fluid being greater in the presence of the viscosification activator than in the absence of the viscosification activator.
A method of treating a well with a treatment fluid comprising (a) water or brine;
- (b) a viscoelastic surfactant;
- and (c) a viscosification activator selected from the group consisting of alkoxylated alcohols, condensation products of an alkyl phenol and an alkylene oxide, alkylene carbonates and glycol ethers, wherein the viscosification activator is present in the treatment fluid in an amount effective to enhance the viscosification of the treatment fluid prior to the treatment fluid reaching the wellbore.
Dependencies are inferred from the claim text.