公开(公告)号：CA2610758A1

公开(公告)日：2006-12-14

申请号：CA2610758

申请日：2006-06-08

Applicant: BASF AG

Inventor： KUEHNLE ANGELIKA ,  PETROVIC SUSANNE ,  GUZMANN MARCUS ,  OETTER GUENTER ,  BRODT GREGOR ,  HUFF JUERGEN ,  MUENSTER INGO

IPC: C09K8/584 ,  C09K8/588 ,  C09K23/52 ,  E21B43/22

Abstract: The invention relates to the use of a mixture containing a surfactant and a cosurfactant in the form of an aqueous solution for flooding underground hydrocarbon fields in order to mobilise and extract hydrocarbons therefrom, wherein the cosurfactant is embodied in the form of a substance or the group of substances selected from an amphiphilic comb polymer comprising a backbone which is provided with two or more side chains which differ from each other and/or from the backbone in terms of the amphiphilic character thereof, the amphiphilic polymer comprises one or several hydrophobic sub-groups [A2] based on a polyisobutene block, wherein at least 50 Mol % of polyisobutene macromolecules have terminal double bonds and one or several hydrophobic sub- groups [A2] or an amphiphilic polymer of a general structural formula (I).