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is injected through injection boreholes into a mineral oil deposit, and crude oil is withdrawn from the deposit through production boreholes.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 C E
C09K C09K E21B
inventional inventional inventional
Christian Petra Jack Günter Gabriela Christian Sophie Martin Veronika
Bittner Neumann Tinsley Oetter Alvarez-Juergenson Spindler Vogel Bock Wloka