Aminosulphonate foam stabilizers

US10370583B2 · kind B2 · utility

Assignee

• RHODIA OPERATIONS · FR

Inventors

• Mikel Morvan · Princeton, US
• Max Chabert · Paris, FR

Key dates

• Filing date: May 4, 2015
• Grant date: Aug 6, 2019
• Expiry date: May 4, 2035

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/168
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to the use of an aminosulphonate compound corresponding to the following formula (I): R1R2N—CHR3—CHR4—CHR5—SO3− (I) where: •R1 is a preferably C2 to C24 alkyl or alkylamido radical; •R2 is an optionally hydroxylated alkyl radical; •R3, R4 and R5 are, independently of one another, H or OH; it being understood that at least one of the R3, R4 and/or R5 groups is OH, for stabilizing a foam, in particular a foam used to extract hydrocarbons in an underground formation.