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

US9505973B2 · 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-Juergenson · Mannheim, DE
• Sophie Maitro-Vogel · Mannheim, DE
• Veronika Wloka · Mannheim, DE
• Marcus Guzmann · Bad Windsheim, DE

Key dates

• Filing date: Nov 1, 2013
• Grant date: Nov 29, 2016
• Expiry date: Aug 30, 2034

Classification

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

Abstract

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is injected through injection boreholes into a mineral oil deposit, and crude oil is withdrawn from the deposit through production boreholes.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.