Invention Grant
US09243450B1 System for operating a drilling rig with a retracting guide dolly and a top drive 有权
用于操作具有回缩引导台和顶部驱动器的钻机的系统

System for operating a drilling rig with a retracting guide dolly and a top drive
Abstract:
A top drive assembly having a top drive traveling block; a retracting guide dolly for use with the top drive traveling block and top drive operably by a master control system to hydraulically operate all of the top and bottom dolly arms simultaneously to extend and retract the top drive and top drive traveling block laterally and move the dolly as needed based on signals from a plurality of sensors disposed on the drilling rig, or on equipment adjacent the drilling rig.
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