Lockable swivel apparatus and method

Details Lockable swivel apparatus and method Lockable swivel apparatus and method

E - Fixed Constructions

21

B

E21B 7/08 (2006.01)

Patent

CA 2276517

A lockable swivel (4) for use in drilling applications which allows the operator to selectively engage and disengage the swivel (4). The lockable swivel (4) is comprised of a locking mandrel (7) carried in a body (3) which engages, upon actuation, splined surfaces (20, 21) within the swivel mandrel (5) thereby locking the two together. Various methods for the use of the lockable swivel (4) in wireline and other drilling operations are demonstrated.

L'invention concerne une tête d'injection (4) verrouillable destinée aux opérations de forage, qui permet à l'opérateur d'accoupler et de désaccoupler la tête d'injection (4), de manière sélective. La tête d'injection (4) verrouillable comprend un mandrin (7) de verrouillage placé dans un corps (3) qui, lorsqu'on l'actionne, entre en contact avec des surfaces cannelées (20, 21) situées à l'intérieur du mandrin (5) de la tête d'injection, les verrouillant ainsi l'un à l'autre. On a également décrit plusieurs procédés destinés à l'utilisation de la tête d'injection (4) verrouillable dans des travaux au câble ou dans d'autres opérations de forage.

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