METHOD FOR RECOVERING CRUDE OIL USING SURFACTANTS BELONGING TO THE CLASS OF ALKYL POLYGLUCOSIDES

摘要

The invention relates to a method for recovering crude oil. An aqueous surfactant formulation comprising at least one alkyl polyglucoside is injected into a crude oil reservoir through at least one injection bore, and crude oil is removed from the reservoir through at least one production bore, said formulation not containing alcohols as cosolvents.