E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
31/31
E21B 43/22 (2006.01) C09K 8/584 (2006.01)
Patent
CA 1316683
HOE 88/F 055 ABSTRACT OF THE DISCLOSURE Aqueous surfactant mixtures, and the use thereof in oil recovery Surfactant mixtures made from 5 to 80% by weight of an ether sulfonate, 5 to 80% by weight of an alkyl or alkylphenol polyglycol ether and 10 to 80% by weight of an alkanesulfonate, petroleumsulfonate or alkylben- zenesulfonate. This combination of surfactants produces stable, aqueous solutions or dispersions which are highly suitable for surfactant flooding in tertiary oil recovery since these aqueous surfactant solutions or dispersions form microemulsions with the oil even at high salinities.
593191
Holst Arno
Miller Dennis
Schmidt Manfred
von Halasz Sigmar-Peter
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
Holst Arno
Miller Dennis
Schmidt Manfred
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