Double-action power pipe wrench

Details Double-action power pipe wrench Double-action power pipe wrench

B - Operations, Transporting

25

B

B25B 17/00 (2006.01) B23P 19/00 (2006.01) B25B 13/50 (2006.01) E21B 19/16 (2006.01)

Patent

CA 2376577

An adjustable power wrench is provided for spinning together, and apart, sections of pipe used in long drill strings such as are typically seen in water well and oil drilling. The wrench is preferably designed for use with large diameter drill pipes or rods, including casings. Two sturdy engaging arms, each containing a pair of serrated power rollers driven by a hydraulic motor, are manually positioned about the subject pipe length. The arms are closed about the pipe by two air rams , one for each engaging arm, to engage the serrated rollers and impart spin to the pipe. The apparatus is preferably supported by wire cable in a balanced fashion from the mast of an available drill rig.

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