Process for mineral oil production using surfactant mixtures

A process for mineral oil production especially Winsor type III microemulsion flooding, in which an aqueous surfactant formulation which comprises at least one nonionic surfactant having 11 to 40 ethoxy units and a hydrophobic radical having 8 to 32 carbon atoms and at least one further surfactant d...

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Bibliographische Detailangaben
Hauptverfasser: OETTER GUENTER, ALVAREZ JUERGENSON GABRIELA, TINSLEY JACK, BITTNER CHRISTIAN, SPINDLER CHRISTIAN, VOGEL SOPHIE
Format: Patent
Sprache:eng
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Zusammenfassung:A process for mineral oil production especially Winsor type III microemulsion flooding, in which an aqueous surfactant formulation which comprises at least one nonionic surfactant having 11 to 40 ethoxy units and a hydrophobic radical having 8 to 32 carbon atoms and at least one further surfactant differing therefrom is forced through injection wells into a mineral oil deposit and crude oil is removed from the deposit through production wells.