Patent ID: 8124658
Filing Date: 2012-02-28
Classification: B01F,C09K

Abstract:
1. A method of tertiary mineral oil extraction from a mineral oil deposit, the method comprising: injecting a surfactant of the general formula R 1 —X, where R 1 is an aliphatic C 17 H 35 -alkyl radical and X is a hydrophilic group selected from the group consisting of sulfonate groups, polyoxyalkylene groups, anionically modified polyoxyalkylene groups, glucoside groups, amine oxide groups, cationic groups, and betainic groups, wherein the mean degree of branching of the R 1 radical is from 2.8 to 3.7, in the form of an aqueous formulation into the mineral oil deposit through an injection bore, and withdrawing crude oil from the deposit through a production bore.