Oil recovery employing an alcohol and an ether- linked...

Details Oil recovery employing an alcohol and an ether- linked... Oil recovery employing an alcohol and an ether- linked...

E - Fixed Constructions

21

B

31/30, 31/31

E21B 43/22 (2006.01)

Patent

CA 1177636

ABSTRACT OF THE DISCLOSURE Waterflooding process for the recovery of oil from a subterranean formation in which at least a portion of the injected fluid consists of an oil slug containing a preferentially oil-soluble alcohol and a preferentially oil-soluble either-linked sulfate or sufonate. Specifically disclosed either-linked surfactants include sulfonated or sulfated polyethoxylated alkylohenols. Specifically disclosed alcohols include aliphatic alcohols containing from 5 to 7 carbon atoms and having a water solubility of less than 3 percent.

383315

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