Method of controlling fluid loss and materials useful therein

Details Method of controlling fluid loss and materials useful therein Method of controlling fluid loss and materials useful therein

C - Chemistry, Metallurgy

08

G

C08G 73/02 (2006.01)

Patent

CA 2600123

A method of controlling the loss of a drilling fluid from a well bore into a subterranean formation in which one illustrative embodiment includes: drilling the well bore with an aqueous based drilling fluid that includes an aqueous phase and a shale hydration inhibitor that is a polyether amine compound, and circulating into the well bore a fluid pill including a dialdehyde crosslinking agent. The dialdehyde crosslinking agent reacts with the polyether amine compound and forms a polymeric material.

L'invention concerne un procédé permettant de commander la perte d'un fluide de forage d'un puits de forage dans une formation souterraine consistant, dans un mode de réalisation: à forer le puits de forage au moyen d'un fluide de forage à base aqueuse comprenant une phase aqueuse et un inhibiteur d'hydratation d'argile litée, soit un composé d'amine de polyéther, et à faire circuler dans le puits de forage un comprimé fluidique renfermant un agent de réticulation de dialdéhyde. Celui-ci réagit avec le composé d'amine de polyéther et forme un matériau polymère.

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