Viscoelastic surfactant rheology modifier

Details Viscoelastic surfactant rheology modifier Viscoelastic surfactant rheology modifier

2011-03-01

2011-03-01

Figueroa, John J (Department: 1765)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S240000, C507S244000, C507S246000, C507S248000, C507S261000, C166S305100

Reexamination Certificate

active

07897547

ABSTRACT:
A method for shortening the shear recovery time of cationic, nonionic, anionic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of an amphiphilic polymeric rheology enhancer. The rheology enhancer is a grafted polymer of polydimethylsiloxane, for example polydimethylsiloxanes grafted with ethylene/propylene glycol. The rheology enhancer also increases fluid viscosity and very low rheology enhancer concentration is needed.

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patent: 2010/0120637 (2010-05-01), Bendejacq et al.

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