Aqueous surfactant formulations based on protein/fatty acid...

Details Aqueous surfactant formulations based on protein/fatty acid... Aqueous surfactant formulations based on protein/fatty acid...

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B01F 17/12 (2006.01) B01F 17/00 (2006.01) B01F 17/30 (2006.01) C09K 8/584 (2006.01) E21B 43/16 (2006.01) E21B 43/22 (2006.01)

Patent

CA 2007817

Abstract of the disclosure Aqueous surfactant formulations based on protein/fatty acid condensates and their use in crude oil production Aqueous surfactant formulations, containing a surfactant mixture composed of: a) 2 to 95 %, preferably 20 to 80 %, of a protein/fatty acid condensate obtained by reacting 1 mole of a protein of the formula Image in which R is the radical of an amino acid, m is an alkali metal ion or ammonium ion and n is a number from 0 to 50, preferably from 2 to 33, with 0.5 to 4 moles of a fatty acid chloride of the formula R1-CO CL in which R1 is C7-C21-alkyl or C7-C21-alkenyl, b) 5 to 98 %, preferably 20 to 80 %, of a hydro- carbon-sulfonate and c) 0 to 80 % of an alkoxylated surfactant. These surfactant mixtures are used in surfactant flooding for increasing the yield in crude oil production.

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