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Maneuverable wellbore tubular makeup and breakout apparatus and method
Maneuverable wellbore tubular makeup and breakout apparatus and method
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机译:可操纵井眼管状补漏装置和方法
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摘要
A maneuverable powerjaw apparatus for making and breaking joints of well bore tubular is provided for operation on a rig floor. Preferably a plurality of wheels are mounted to a mobile housing in a reverse tricycle orientation that permits high maneuverability of the mobile housing including rotation in position. Preferably, the two forward wheels are individually powered by hydraulic motors. Vertical orientation of the mobile housing is preferably provided by hydraulic struts that, once the mobile housing is positioned adjacent the pipes on the rig floor, permit the power jaws to be positioned at the correct vertical position on the joints for making, breaking, and spinning of the pipes. In one presently preferred embodiment, a pivotal connection is provided between the mobile housing and a frame to which torque arms are attached. In this embodiment, the frame rotates with respect to the well bore tubular as the joints are made or broken while the mobile housing may remain stationary.
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