Process for mineral oil production using surfactant mixtures

US8584751B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christian Bittner · Bensheim, DE
• Günter Oetter · Bischofswerda, DE
• Jack Tinsley · Mannheim, DE
• Christian Spindler · Günzburg, DE
• Gabriela Alvarez Jürgenson · Mannheim, DE
• Sophie Vogel · Mannheim, DE

Key dates

• Filing date: Oct 13, 2010
• Grant date: Nov 19, 2013
• Expiry date: Dec 1, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K8/604
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

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.