Waterflooding employing thickened aqueous liquids

Details Waterflooding employing thickened aqueous liquids Waterflooding employing thickened aqueous liquids

E - Fixed Constructions

21

B

31/30

E21B 43/16 (2006.01) C09K 8/584 (2006.01)

Patent

CA 1107049

9718 WATERFLOODING EMPLOYING THICKENED AQUEOUS LIQUIDS Abstract of the Disclosure 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. -1-

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