Compositions and methods for water control and strengthening...

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 8/32 (2006.01) E21B 43/02 (2006.01)

Patent

CA 2566627

The present invention relates, in general, to subterranean fluids, and more particularly, to subterranean drilling fluids that may be useful for reducing the production of water from a portion of a subterranean formation and/or stabilizing an unconsolidated portion of a subterranean formation while drilling. In some embodiments, the present invention provides methods of reducing the flow of water from a portion of a subterranean formation that comprise contacting the portion of the subterranean formation with an organoaluminum compound, the organoaluminum compound being capable of forming a reaction product in the presence of water. The present invention also includes methods of drilling a well bore in a subterranean formation, methods of enhancing the stability of an unconsolidated portion of a subterranean formation, methods of stabilizing an unconsolidated portion of a subterranean formation, and drilling fluids.

L'invention concerne, d'une manière générale, des fluides souterrains et, plus précisément, des fluides de forage souterrains pouvant être utiles pour réduire la production d'eau provenant d'une partie d'une formation souterraine et/ou pour stabiliser une partie non consolidée d'une formation souterraine lors du forage. Dans quelques modes de réalisation, l'invention concerne des procédés permettant de réduire le flux d'eau provenant d'une partie d'une formation souterraine et consistant à mettre en contact la partie de la formation souterraine avec un composé d'organoaluminium capable de former un produit de réaction en présence d'eau. L'invention concerne également des procédés de forage d'un puits de forage dans une formation souterraine, des procédés permettant d'améliorer la stabilité d'une partie non consolidée d'une formation souterraine, des procédés permettant de stabiliser une partie non consolidée d'une formation souterraine et des fluides de forage.

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