Acidic high temperature stable aqueous brine fluids viscosified

Details Acidic high temperature stable aqueous brine fluids viscosified Acidic high temperature stable aqueous brine fluids viscosified

1982-12-28

1984-12-25

Guynn, Herbert B.

Compositions

Leather or fur treating

252 855R, 524548, C09K 700, E21B 4300

Patent

active

044902611

ABSTRACT:
There is provided an aqueous brine fluid having a pH of less than about 5 and containing a high salt concentration and a basic N-heterocyclic polymer or copolymer such as polyvinyl pyridine which serves to increase the viscosity of the fluid, particularly at elevated temperatures of above about 300.degree. F. These fluids are particularly useful as drilling fluids for the drilling of oil and gas wells.

REFERENCES:
patent: 4045357 (1977-08-01), Reed
patent: 4046197 (1977-09-01), Gruesbeck et al.
patent: 4079011 (1978-03-01), Tate
patent: 4304677 (1981-12-01), Stauffer et al.
patent: 4396734 (1983-08-01), Williams et al.

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