Process for Producing Mineral Oil Using Surfactants Based on C16C18-Containing Alkyl Propoxy Surfactants

摘要

The invention relates to a process for mineral oil production by means of Winsor Type III microemulsion flooding, in which an aqueous surfactant formulation comprising at least one ionic surfactant of the general formula R¹—O—(CH₂C(CH₃)HO)_m(CH₂CH₂O)_n—XY⁻M⁺ is injected through injection boreholes into a mineral oil deposit, and crude oil is withdrawn from the deposit through production boreholes.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 ionic surfactants of the general formula.