E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
31/14
E21B 43/22 (2006.01) C09K 8/592 (2006.01) E21B 43/24 (2006.01)
Patent
CA 1230220
A METHOD OF IMPROVING CONFORMANCE IN STEAM FLOODS WITH STEAM FOAMING AGENTS (D#77,989-Cl-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''SO3M where R is an alkyl radical, branched or linear, or an alkylbenzene, alkyltoluene or alkylxylene group, having from about 8 to about 24 carbon atoms in the alkyl chain, R' is ethyl, propyl or a mixture of ethyl and propyl, n has an average value of about 1 to about 20, R'' is ethyl, propyl, hydroxypropyl or butyl and M is an alkali metal or ammonium ion.
471280
Gassmann Zean Z.
Hall Wilbur L.
Hawkins Jeffrey T.
Huang Wann-Sheng
Schievelbein Vernon H.
Gowling Lafleur Henderson Llp
Texaco Development Corporation
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