Downhole tool having radially extendable members

Details Downhole tool having radially extendable members Downhole tool having radially extendable members

E - Fixed Constructions

21

B

E21B 10/32 (2006.01)

Patent

CA 2524189

A downhole tool (10) comprises a body (14), radially extendable members (16) mounted to the body and movable between retracted and extended positions, a cam member (32) operatively associated with the extendable members and movable relative to the body to extend the extendable members, and a support member (30) configurable to permit retraction of the extendable members (16) from an extended position. The tool may be an under-reamer, and the extendable members may be cutting blades (16).

L'invention concerne un outil de fond (10) comprenant un corps (14), des éléments extensibles radialement (16) montés au corps et pouvant se déplacer entre des positions rétractée et étendue, un élément de came (32) lié de manière fonctionnelle aux éléments extensibles et pouvant se déplacer par rapport au corps, de manière à étendre les éléments extensibles, et un élément de support (30) conçu pour permettre une rétraction des éléments extensibles (16) d'une position étendue. Ledit outil peut être un élargisseur et les éléments extensibles peuvent être des lames coupantes (16).

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