Method of retarding degradation of surfactants employed in water

Details Method of retarding degradation of surfactants employed in water Method of retarding degradation of surfactants employed in water

1978-10-16

1982-05-25

Guynn, Herbert B.

Compositions

Leather or fur treating

166275, E21B 4327

Patent

active

043315437

ABSTRACT:
A process for the recovery of oil from subterranean oil reservoirs by waterflooding employing ether-linked sulfonate surfactants in which oxidative degradation of the surfactant is retarded through the establishment of an anaerobic condition in the surfactant solution or through the use of oxidation inhibitors. The anaerobic condition may be provided by mechanical means such as scrubbing the injected water with an inert gas in order to remove oxygen or by employing produced well water which is handled under a closed system to exclude oxygen. A preferred class of oxidation inhibitors are sterically hindered phenolic compounds which function as free radical chain inhibitors.

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patent: 4108830 (1978-08-01), Kline
patent: 4124073 (1978-11-01), Wier
Donbrow et al., "Development of Acidity in Non-Ionic Surfactants: Formic and Acetic Acid", Analyst, vol. 103, 1978, pp. 400-402.
Schwartz et al., Surface Active Agents and Detergents, vol. II, 1958, pp. 71-78 and 91-93.
Gould, Mechanism and Structure in Organic Chemistry, Mar. 1964, pp. 705-710.

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