Pipe gripping device

Details Pipe gripping device Pipe gripping device

E - Fixed Constructions

21

B

E21B 19/10 (2006.01)

Patent

CA 2250686

A pipe gripping device is taught which is useful for moving pipe into and/or out of a well. The pipe gripping device includes a first set of slips for holding a pipe in a pipe light condition and a second set of slips for holding a pipe in a pipe heavy condition. The second set of slips are actuatable independently from the first set of slips. The pipe gripping device can include a slip moving system which prevents the slip carrier blocks from being driven outwardly against the housing, to thereby prevent the carrier blocks from locking, by being driven against the housing.

Dispositif de saisie de tuyaux servant à descendre ces derniers dans un puits ou à les en remonter. Le dispositif comprend une première série de coins capables de soutenir des tuyaux que l'on remonte du puits, et une deuxième série de coins capables de soutenir des tuyaux au cours de leur descente dans le puits. La deuxième série de coins est commandée indépendamment de la première. Le dispositif peut comprendre un mécanisme qui sert à déplacer les coins pour empêcher les carrés d'entraînement d'être poussés vers l'extérieur contre le boîtier, et donc de rester bloqués contre ce dernier.

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