Top drive interlock

Details Top drive interlock Top drive interlock

E - Fixed Constructions

21

B

E21B 44/00 (2006.01) E21B 3/02 (2006.01) E21B 19/06 (2006.01)

Patent

CA 2747864

Embodiments of the present invention generally relate to methods and apparatus for improving top drive operations. In one embodiment a method of ensuring safe operation of a top drive includes operating a top drive, thereby exerting torque on a first tubular to makeup or breakout a first threaded connection between the first tubular and a second tubular. The method further includes monitoring for breakout of a second connection between a quill of the top drive and the first tubular; and stopping operation of the top drive and/or notifying an operator of the top drive if break-out of the second connection is detected.

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