Formulations for enhanced oil recovery comprising sulfonates

US11692124B2 · kind B2 · utility

Assignee

• RHODIA OPERATIONS · FR

Inventors

• Olivier Back · Val-de-Reuil, FR
• Rémy Leroy · Vaulx-en-Velin, FR
• Mikel Morvan · Princeton, US
• Patrick Moreau · Saint-Jean-le-Blanc, FR
• Philippe Marion · Vernaison, FR

Key dates

• Filing date: Sep 8, 2020
• Grant date: Jul 4, 2023
• Expiry date: Sep 8, 2040

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/16
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compositions suitable for enhanced oil recovery comprisinga) a mixture of α-sulfocarbonyl compounds of formulae (1) and (2) in a mixture ratio (1) to (2) of from 1:99 to 99:1whereinR1, R3 and R5, which may be the same or different at each occurrence, are hydrogen or a linear or branched alkyl chain having 1 to 20 carbon atoms,R2 and R4, which may be the same or different at each occurrence, may be a linear or branched alkyl group having 4 to 24 carbon atoms and in which the alkyl chain may comprise one or more cycloaliphatic groups, andX is H or a metal forming a salt with the sulfonate group, andb) a salt containing aqueous solution.