Fluid system having controllable reversible viscosity

Details Fluid system having controllable reversible viscosity Fluid system having controllable reversible viscosity

2006-10-10

2006-10-10

Tucker, Philip C. (Department: 1712)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S240000, C507S266000, C507S267000, C507S277000, C166S305100

Reexamination Certificate

active

07119050

ABSTRACT:
This Invention relates to methods of treating a subterranean hydrocarbons reservoir comprising contacting the formation with a treating fluid comprising an aqueous solution, an acid, a surfactant acting as gelling agent essentially consisting of erucylamidopropyl betaine (or a protonated/deprotonated homolog or salt thereof). The treating fluid may further comprise a lower n-alcohol for improved temperature stability.

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SPE 65033 “A Novel Self-Deverting-Acid Developed for Matrix Stimulation of Carbonate Reservoirs” By Frank Chang, Qi Qu, Wayne Frenier.
SPE 73704 “The Successful Use of Polymer-Free Diverting Agents for Acid Treatments in the Gulf of Mexico” By Scott M. McCarthy, Qi Qu, Dan Vollmer.

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