Method of improving conformance in steam floods with...

Details Method of improving conformance in steam floods with... Method of improving conformance in steam floods with...

E - Fixed Constructions

21

B

31/14

E21B 43/24 (2006.01) C09K 8/592 (2006.01)

Patent

CA 1274381

A METHOD OF IMPROVING CONFORMANCE IN STEAM FLOODS WITH CARBOXYLATE STEAM FOAMING AGENTS (D#78,530-F) ABSTRACT The disclosed invention is a group of steam foaming agents for injection with steam and a non-condensable gas to decrease permeability in steam swept zones and increase oil recovery. The foaming agents have the general formula: RO(R'O)nR"CO2M where R is an alkyl radical, branched or linear, having from about 8 to about 24 carbon atoms in the alkyl chain, R' is ethylene, propylene or a mixture of ethylene and propylene, n has an average value of about 3 to about 11, R'' is methylene or ethylene, and M is an alkali metal or ammonium ion. pg:EX8F

532435

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