Packer with bypass channels

Details Packer with bypass channels Packer with bypass channels

E - Fixed Constructions

21

B

E21B 33/128 (2006.01) E21B 47/10 (2006.01)

Patent

CA 2565137

There is disclosed a downhole packer for use in a well bore, and in particular, a packer which can be used for downhole testing. In an embodiment of the invention, a packer tool (10) for mounting on a work string to provide a seal against a tubular (32) is disclosed, the packer tool comprising a body (12) with one or more packer elements (18) and a sleeve (14), the packer tool being set by movement of the sleeve relative to the tool body compressing the one or more packer elements, wherein the tool has a plurality of bypass channels (16) to provide a fluid path past the packer elements, the sleeve including at least owe anchoring member (22, 50), the at least one anchoring member being actuate to contact the tubular by fluid pressure from the bypass channels when the packer is set.

L'invention porte sur une garniture d'étanchéité de forage et en particulier sur une garniture utilisable pour des tests en fond de puits, et sur un outil (10) de mise en place d'une telle garniture sur un train de tiges pour en assurer l'étanchéité avec un élément tubulaire (32). Ledit outil qui présente un corps (12) pourvu d'une ou plusieurs garnitures (18) et d'un manchon (14), est mis en place par un mouvement du manchon par rapport au corps (12) qui comprime la ou les garnitures. L'outil comporte en outre plusieurs canaux de dérivation (16) livrant passage au fluide en contournant la ou les garnitures. Par ailleurs, le manchon est muni d'un ou plusieurs éléments d'ancrage (22, 50) actionnés par la pression du fluide traversant les canaux (16) de manière à entrer en contact avec l'élément tubulaire lorsque les garnitures sont posées.

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