AQUEOUS FORMULATIONS OF SURFACTANTS AND ASSOCIATIVE POLYMERS FOR THE ASSISTED RECOVERY OF PETROLEUM

摘要

The invention relates to aqueous formulations suitable as extraction fluid in enhanced oil recovery, which comprise:at least one surfactant; andat least one associative polymer, such as obtained by micellar radical polymerization by bringing into contact, in an aqueous medium: hydrophilic monomers, dissolved or dispersed in the aqueous medium;hydrophobic monomers in the form of a micellar solution; andat least one radical polymerization initiator;and preferably at least one radical polymerization control agent.