The down-the-hole drilling rig is an impact rotary drilling rig. Its internal structure is different from that of a general rock drilling machine. Its gad distribution and piston reciprocating mechanism.
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[pdf] Combining Nabors proprietary Smart Suite of automated drilling software with Canrig® robotics on the PACE®-R801 creates an unmanned rig floor that removes crews from red zone areas and delivers consistent, predictable drilling performance. Video from the first well is available here, PACE®-R801.
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