Surfactant mixtures for tertiary oil recovery

US8524643B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Juergen Huff · Ludwigshafen, DE
• Guenter Oetter · Bischofswerda, DE
• Angelika Kuehnle · Osnabrück, DE
• Susanne Petrovic · Eppelheim, DE
• Marcus Guzmann · Bad Windsheim, DE
• Ingo Muenster · Haßloch, DE
• Gregor Brodt · Heppenheim, DE

Key dates

• Filing date: Sep 23, 2011
• Grant date: Sep 3, 2013
• Expiry date: Oct 4, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S507/936
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Use of a mixture comprising a surfactant and a cosurfactant in the form of an aqueous solution for flooding underground deposits of hydrocarbons for mobilizing and recovering the hydrocarbons from the underground deposits, the cosurfactant being a substance or a group of substances selected from the following list: