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drill string
drill string or drill pipen (Mining & Quarrying) (in the oil industry) a pipe made of lengths of steel tubing that is attached to the drilling tool and rotates during drilling to form a boredrill string
drill string[′dril ‚striŋ] (mechanical engineering) The assemblage of drill rods, core barrel, and bit, or of drill rods, drill collars, and bit in a borehole, which is connected to and rotated by the drill collar of the borehole. AcronymsSeedata set |