Independently powered breakout apparatus and method for a sectio

Details Independently powered breakout apparatus and method for a sectio Independently powered breakout apparatus and method for a sectio

1978-03-09

1979-04-03

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

81 5716, 81 5734, 166 775, 173164, B25B 1700, E21B 300, E21B 1916

Patent

active

041472152

ABSTRACT:
An improved means for making up and breaking out sections of drill pipe is disclosed herein. The make-up and breakout system is adapted for drill rigs having powered rotaries and powered carriages for moving the rotary up and down the mast. A wrench is mounted to the carriage for gripping the first section of the pipe. Slips are mounted at the work table for gripping the second section of pipe to support the string of pipe and prevent its rotation. The wrench is powered independently of the rotary, and the wrench and rotary can also rotate a certain amount with respect to each other while the wrench is gripping the first section of pipe. The independent power of rotation allows the wrench to breakout the first section from the second section. It also allows the rotary to breakout the first section from the rotary while the wrench restrains the first section from rotation.

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