Waterflooding employing thickened aqueous liquids

Details Waterflooding employing thickened aqueous liquids Waterflooding employing thickened aqueous liquids

1978-08-07

1980-03-18

Guynn, Herbert B.

Wells

Processes

Distinct, separate injection and producing wells

166275, 252 855D, E21B 4322

Patent

active

041934520

ABSTRACT:
Waterflood process for the recovery of oil from a subterranean oil reservoir in which at least a portion of the injected water is thickened by the addition of a surface-active amphoteric quaternary ammonium sulfonate and an aliphatic alcohol containing from 5 to 8 carbon atoms. The alcohol is employed in a concentration to provide a ratio of the volume amount of alcohol in the solution to the weight amount of the amphoteric sulfonate within the range of 0.1-0.6 to produce a pronounced thickening effect. The alcohol-amphoteric sulfonate systems are useful viscosifiers in highly saline systems.

REFERENCES:
patent: 3280179 (1966-10-01), Ernst
patent: 3366174 (1968-01-01), Ferrell et al.
patent: 3939911 (1976-02-01), Maddox et al.
patent: 4042030 (1977-08-01), Savins et al.
patent: 4076743 (1978-02-01), Koch et al.

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