Aqueous acid gels and use thereof

Details Aqueous acid gels and use thereof Aqueous acid gels and use thereof

1985-03-28

1986-08-05

Guynn, Herbert B.

Compositions

Leather or fur treating

166307, 5253266, 526278, E21B 4327

Patent

active

046042180

ABSTRACT:
Copolymers of a predominant proportion of an alkyl allyl ammonium halide and a vinyl phosphonic acid, optionally with other copolymerizable vinylidene monomers, form aqueous acid gel compositions when added to the aqueous acid, along with a gelling agent selected from titanium or zirconium compounds, and gel destabilizing compounds containing fluoride, sulphate or phosphate anions, the apparent viscosity and time of stability of the acid gel composition being controlled by the addition of these ingredients. These acid gels are particularly effective as fracture-acidizing fluids in deep, hot oil or gas well stimulation.

REFERENCES:
patent: 3779914 (1973-12-01), Nimerick
patent: 4068719 (1978-01-01), Clampitt et al.
patent: 4225445 (1980-09-01), Dixon
patent: 4313834 (1982-02-01), Harris
patent: 4428432 (1984-01-01), Pabley
patent: 4470915 (1984-09-01), Conway
patent: 4488975 (1984-12-01), Almond
patent: 4518745 (1985-05-01), Engelhardt et al.

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