Drinker Biddle & Reath LLP
Process for producing mineral oil using surfactants based on a mixture of C32 Guerbet-, C34 Guerbet-, C36 Guerbet-containing alkyl alkoxylates
The present invention relates to a process for mineral oil extraction by means of Winsor type III microemulsion flooding, in which an aqueous surfactant formulation comprising at least three ionic surfactants which are different with regard to the alkyl moiety (R1)(R2)—CH—CH2— and are of the general formula (R1)(R2)—CH—CH2—O-(D)n-(B)m-(A)l-XYa−a/bMb+ is injected through injection boreholes into a mineral oil deposit, and crude oil is withdrawn from the deposit through production boreholes. The invention further relates to surfactant formulations of ionic surfactants of the general formula.
BASF SE
C E C
C09K E21B C09K
inventional inventional inventional
Sophie Martin Günter Jack Christian Gabriela Veronika Petra Christian
Vogel Bock Oetter Tinsley Spindler Alvarez Jürgenson Wloka Neumann Bittner