Whipstock attachment to a fixed cutter drilling or milling bit

Details Whipstock attachment to a fixed cutter drilling or milling bit Whipstock attachment to a fixed cutter drilling or milling bit

E - Fixed Constructions

21

B

E21B 7/08 (2006.01)

Patent

CA 2753856

An assembly is provided to attach a whipstock to a mill/drill bit. The assembly includes an upper collar adapted for installation around a shank of the mill/drill bit. At least one connecting member is mounted at a first end to the upper collar. The connecting member extends downwardly from the upper collar and is adapted to fit within a junkslot of the mill/drill bit to which the upper collar is attached. A whipstock attachment structure is mounted to a second end of the at least one connecting member.

La présente invention concerne un ensemble qui est prévu pour fixer un sifflet déviateur à une fraise/un trépan. L'ensemble comprend un collet supérieur conçu pour être installé autour d'une tige de la fraise/du trépan. Au moins un élément de liaison est monté à une première extrémité sur le collet supérieur. L'élément de liaison s'étend vers le bas à partir du collet supérieur et est conçu pour aller à l'intérieur d'une fente de déchet de la fraise/du trépan auquel le collet supérieur est fixé. Une structure de fixation de sifflet déviateur est montée sur une seconde extrémité du ou des éléments de liaison.

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