Method for preventing the precipitation of ferric compounds duri

Details Method for preventing the precipitation of ferric compounds duri Method for preventing the precipitation of ferric compounds duri

1985-07-18

1986-03-04

Guynn, Herbert B.

Compositions

Leather or fur treating

166307, E21B 4327

Patent

active

045740500

ABSTRACT:
The formation and subsequent precipitation of undesirable ferric compounds during the acid treatment of wells is substantially eliminated by incorporating in said treating acid an inhibiting amount of a monobasic alkanoic and/or alkenoic acid having at least four carbon atoms and bearing at least two alcoholic hydroxyl groups per molecule, and/or a soluble salt or .gamma.-lactone of said acid. E.g. ascorbic acid or erythorbic acid.

REFERENCES:
patent: 2175081 (1939-10-01), Grebe
patent: 3686123 (1972-08-01), Hiroshi
patent: 4160483 (1979-07-01), Thomas et al.
patent: 4167214 (1979-09-01), Street
patent: 4199469 (1980-04-01), Walzer

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