Method of treating an underground formation

Details Method of treating an underground formation Method of treating an underground formation

E - Fixed Constructions

21

B

E21B 43/22 (2006.01) E21B 43/02 (2006.01)

Patent

CA 2238173

A method of treating an underground formation comprising the sequential steps of: (a) contacting the formation with an aqueous medium; (b) contacting the formation with a hydrocarbon fluid; (c) contacting the formation with a solvent in the form of a glycol ether; and (d) contacting the formation with a consolidation solution of between 30 and 60 %m of monomeric and/or polymeric organic polyepoxides having more than one epoxy group per molecule and between 5 and 20 %m of a curing agent in the solvent.

Ce procédé de traitement d'une formation souterraine comprend les étapes séquentielles consistant à mettre cette formation en contact: (a) avec un milieu aqueux, (b) avec un fluide d'hydrocarbure, (c) avec un solvant sous la forme d'un glycol éther, et (d) avec une solution de consolidation composée de 30 à 60 % en masse de polyépoxydes organiques monomères et/ou polymères possédant plus d'un groupe époxy par molécule, et de 5 à 20 % en masse d'un agent de durcissement dans le solvant.

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