Particles

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C - Chemistry, Metallurgy

09

K

C09K 8/80 (2006.01) E21B 43/267 (2006.01)

Patent

CA 2632179

Manufactures particles comprising a chemical treatment agent which are useful in wells are provided. The particles have the advantage of being able to chemically treat a well, e.g. to remove filter cake. Embodiments of the invention improve well production by providing sand control and/or increasing permeability of a gravel pack. Methods of using the particles and a gravel pack comprising the particles are also provided.

L'invention concerne des particules fabriquées comprenant un agent de traitement chimique et qui sont utiles dans des puits. Les particules présentent l'avantage de pouvoir traiter chimiquement un puits, p. ex. d'éliminer le gâteau de filtration. Les formes de réalisation de l'invention permettent d'améliorer la production d'un puits par la régulation du sable et/ou l'accroissement de la perméabilité d'un filtre à gravier. Des procédés d'utilisation des particules et un filtre à gravier comprenant les particules sont également décrits.

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