Top drive unit, pipe gripping device and method of drilling...

Details Top drive unit, pipe gripping device and method of drilling... Top drive unit, pipe gripping device and method of drilling...

E - Fixed Constructions

21

B

E21B 19/20 (2006.01)

Patent

CA 2588745

A top drive unit comprising a top drive (20) and a pipe gripping device (50; 110) connectable beneath said top drive (20) , the arrangement being such that, in use, whilst a pipe is connected to said top drive (20) said pipe gripping device (50; 110) is moveable between a first position in which said pipe is accommodated within said pipe gripping device (50; 110) and a second position in which said pipe is not accommodated within said pipe gripping device (50; 110).

La présente invention décrit une unité d'entraînement par le haut comprenant un dispositif d'entraînement par le haut (20) et un dispositif de prise de tube (50; 110) pouvant être relié en dessous dudit dispositif d'entraînement par le haut (20), l'agencement étant tel que, durant l'utilisation, tandis qu'un tube est relié audit dispositif d'entraînement par le haut (20), ledit dispositif de prise de tube (50; 110) est mobile entre une première position dans laquelle ledit tube est logé à l'intérieur dudit dispositif de prise de tube (50; 110) et une seconde position dans laquelle ledit tube n'est pas logé à l'intérieur dudit dispositif de prise de tube (50; 110).

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