Intelligent drilling tool for weakly cemented formation
The invention provides an intelligent well drilling tool for a weakly cemented formation, and relates to the technical field of coal mine equipment, the intelligent well drilling tool comprises a transmission rod and a reamer bit, the reamer bit is fixedly installed on the transmission rod, the ream...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides an intelligent well drilling tool for a weakly cemented formation, and relates to the technical field of coal mine equipment, the intelligent well drilling tool comprises a transmission rod and a reamer bit, the reamer bit is fixedly installed on the transmission rod, the reamer bit comprises a reamer cutterhead, a first tool rest and a second tool rest are rotatably installed on the reamer cutterhead, and a gear is installed on the reamer cutterhead; an adjusting support and an adjusting rotating disc are rotationally installed in the reaming cutter disc, a gear disc is fixedly installed on the adjusting support and the adjusting rotating disc, and a transmission gear is rotationally installed on the reaming cutter disc. The mud discharging rod is arranged, and the mud discharging key fixedly installed on the mud discharging rod solves the problem that a drill bit is wrapped by mud in the drilling process; the connecting rod and the adjusting rod are arranged, the distance between the |
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