Waterflooding using sulfonated polyethoxylated aliphatic...

Details Waterflooding using sulfonated polyethoxylated aliphatic... Waterflooding using sulfonated polyethoxylated aliphatic...

E - Fixed Constructions

21

B

31/16

E21B 43/22 (2006.01)

Patent

CA 1139929

Abstract of the Disclosure Waterflooding process for the recovery of oil from a subterranean formation in which at least a portion of the injected water is thickened by the addition of a mixture of sulfonated polyethoxylated aliphatic alcohol surfactants. The thickened water has a salinity within the range of 5-18 percent. The mixture of sulfonated polyethoxylated aliphatic alcohols has an HLB within the range of 10.0-14.0 and the lipophilic base of the surfactant mixture contains an average of from 16 to 20 carbon atoms, The surfactant mixture increases the viscosity of the water to a value greater than viscosity achieved through the addition of only one of the surfactant components.

357912

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