Corrosion inhibitor for heavy brines

Compositions – Leather or fur treating

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Details

252 855E, 252389R, E21B 3313, E21B 4311, E21B 4300

Patent

active

045391220

ABSTRACT:
The present invention provides a method for reducing the corrosive effects of a heavy brine upon a metal by admixing a quantity of a selected corrosion inhibitor with the brine solution. The corrosion inhibitor can comprise at least one member selected from the group consisting of a monovalent or divalent salt of erythorbic acid, a molybdate salt, ferrous gluconate and sodium gluconate. The brine solution can contain potassium, sodium, calcium or zinc halide salts. The corrosion inhibitor can be used in drilling, completion, packer and workover fluids.

REFERENCES:
patent: 2913420 (1959-11-01), Alderman et al.
patent: 3215637 (1965-11-01), Clerbois
patent: 4046197 (1977-09-01), Grvesbeck et al.
patent: 4317735 (1982-03-01), Crowe
patent: 4490262 (1984-12-01), Stauffer et al.
Chem. Abstract 85: 150,846z, Kodama, 1976.

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