High viscosity well treating fluids, additives and methods

Details High viscosity well treating fluids, additives and methods High viscosity well treating fluids, additives and methods

1994-09-28

1998-06-02

Clardy, S. Mark

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

507211, 507212, 507213, 507214, 507215, 507216, 507217, E21B 4327, C09K 702

Patent

active

057599645

ABSTRACT:
Improved high viscosity well treating fluids for use at temperatures above about 200.degree. F., gel breaking additives for the treating fluids and methods of using the treating fluids are provided by the present invention. The high viscosity well treating fluids are basically comprised of an aqueous liquid, a polysaccharide gelling agent to increase the viscosity of the aqueous liquid and a gel breaker comprised of a bromate ion releasing compound to reduce the viscosity of the aqueous liquid after a desired period of time.

REFERENCES:
patent: 4552675 (1985-11-01), Brown et al.
patent: 4704214 (1987-11-01), Russell et al.
patent: 4750562 (1988-06-01), Jennings, Jr.

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