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Sectional back reamer apparatus and method for horizontal directional drilling
Sectional back reamer apparatus and method for horizontal directional drilling
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机译:用于水平定向钻孔的分段后铰刀装置和方法
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摘要
An improved back reamer for horizontal directional drilling is provided with multiple components which can be assembled and disassembled before and after the back reaming process. The reamer includes a main shaft connectable to the drill string, a reamer head removably mounted on the main shaft, and a pull tab removably attached to the main shaft. Faceted couplings between the reamer shaft and head, and between the reamer head and pull tab preclude rotation between the components.
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