Method of enhancing adsorption of an inhibitor onto a...

E - Fixed Constructions – 21 – B

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E21B 43/28 (2006.01) C09K 8/528 (2006.01) E21B 37/06 (2006.01)

Patent

CA 2702693

The instant disclosure is directed to a method of enhancing adsorption of a salt inhibitor onto a wellbore region, wherein the method comprises preconditioning the wellbore region, emplacing the salt inhibitor into the wellbore region, and shutting in the wellbore region for a period of time to at least initiate adsorption of the salt inhibitor onto the wellbore region. The salt inhibitor comprises an at least partially water soluble compound comprising a Group 3 to Group 15 metal and/or an at least partially water soluble compound having any one of the formulae (I) wherein X is O or S; and R1, R2, R3, R4, and when present, R5 and/or R6 each independently comprise an organic or an inorganic functional group.

Le procédé de cette invention permet d'améliorer l'adsorption d'un inhibiteur de sel sur une partie de puits de pétrole. Ledit procédé comprend le préconditionnement de la partie de puits de pétrole, le positionnement de l'inhibiteur de sel dans ladite partie préconditionnée, et la fermeture de ladite partie de puits de pétrole préconditionnée pendant un laps de temps suffisant pour au moins initier l'adsorption de l'inhibiteur de sel sur la région d'alésage de puits. L'inhibiteur de sel comprend un composé au moins partiellement hydrosoluble comprenant un métal des Groupes 3 à 15 et/ou un composé au moins partiellement hydrosoluble répondant à l'une quelconque des formules (I) où X est O ou S; et R1, R2, R3, R4, et si présents, R5 et/ou R6 représentent chacun indépendamment un groupe fonctionnel organique ou inorganique.

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