Suspension system and method for wellbore tubular makeup and breakout apparatus

摘要

A power tong apparatus for making and breaking joints of well bore tubulars is provided for operation on a rig floor. A first extendable boom is provided for moving the power jaw apparatus across the rig floor. Preferably at least one wheel is mounted to a support frame to which the power tong apparatus is attached. The wheel steers the power tong apparatus as the boom extends and retracts. The wheel is pivotally mounted so that a non linear path may be followed when desired. In one embodiment, a track may be laid along a desired path on the rig floor. In another embodiment, a second extendable boom is mounted to said first boom for lifting the power tong apparatus. A pivotal connection may be provided between the second boom and the power tong apparatus to allow rotational movement thereof as connections are made or broken. The first boom is mounted on a pivot assembly that permits rotation of the first boom with respect to the rig floor. One or more lateral supports may be secured to the pivot assembly. In another embodiment, a single boom may be used.