Fluid loss additives for cement slurries

C - Chemistry – Metallurgy – 04 – B

Patent

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C04B 14/04 (2006.01) C04B 24/38 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2561346

Methods for cementing in a subterranean zone, which use a cement composition that includes zeolite, cementitious material, proportioned fluid loss control additives and a mixing fluid. Cement compositions containing proportioned fluid loss control additives, and methods of making cement compositions containing proportioned fluid loss control additives.

L'invention concerne des procédés de cimentation en zone souterraine, reposant sur l'utilisation d'une composition de ciment qui comprend : zéolithe, matériau à base de ciment, additifs de contrôle de perte de fluide dosés, et fluide mélangeur. On décrit aussi des compositions de ciment qui renferment les additifs susmentionnés, et des procédés relatifs à l'élaboration des mêmes compositions renfermant ces additifs.

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