Improved process for enhanced oil recovery

Details Improved process for enhanced oil recovery Improved process for enhanced oil recovery

E - Fixed Constructions

21

B

E21B 43/22 (2006.01) C09K 8/584 (2006.01) C09K 8/588 (2006.01)

Patent

CA 2698785

Method for enhanced oil recovery consisting in introducing into the injection water a solution containing at least one polymer and at least one surfactant, the surfactant/polymer weight ratio being between 1 and 10 and the surfactant concentration in the solution being higher than 100 ppm (parts per million), characterized in that the said polymer contains at least one hydrophobic cationic monomer.

Procédé de récupération assistée du pétrole consistant à introduire dans l'eau d'injection une solution contenant au moins un polymère et au moins un agent tensio- actif, le rapport pondéral tensio-actif / polymère étant compris entre 1 et 10 et la concentration en agent tensio-actif dans la solution étant supérieure à 100 (partie par million) ppm, caractérisé en ce que ledit polymère contientau moins un monomère cationique hydrophobe.

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