Process for producing mineral oil using surfactants based on C16C18-containing alkyl propoxy surfactants

US8596367B2 · 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
• Veronica Wloka · Mannheim, DE
• Marcus Guzmann · Bad Windsheim, DE

Key dates

• Filing date: Mar 9, 2011
• Grant date: Dec 3, 2013
• Expiry date: Jul 23, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K23/42
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for mineral oil production by means of Winsor Type III microemulsion flooding and an aqueous surfactant formulation are disclosed. The aqueous surfactant formulation containing 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is injected through injection boreholes into a mineral oil deposit, and crude oil is withdrawn from the deposit through production boreholes.