Drill pipe breakout device

Details Drill pipe breakout device Drill pipe breakout device

E - Fixed Constructions

21

B

E21B 17/02 (2006.01) E21B 3/02 (2006.01) E21B 17/043 (2006.01) E21B 19/16 (2006.01)

Patent

CA 2104924

DRILL PIPE BREAKOUT DEVICE ABSTRACT OF THE DISCLOSURE A drill unit (12) is disclosed which uses slides (18, 20) mounted on the saver-sub (16) of the drill unit to lock the drill pipe (14) to the saver-sub (16) for joint rotation. Dogs (32) are engaged with flats (50) on the drill pipe by moving an outer collar (42) over the end of the drill pipe. The outer collar holds the dogs within the flats to ensure joint rotation between the saver-sub and the drill pipe. The outer collar (42) can be retracted away from the drill pipe to move the dogs out of engagement with the flats and move the slides (18, 20) to the retracted position.

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