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drill string |
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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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Today, MTI operates three modern manufacturing facilities, supplying mine operations with hydraulic jumbo drills, load haul dump loaders, trucks, in-the-hole drilling rigs, rail haulage systems, mine locomotive buckets, crushers, underground mine utility vehicles and drill string components. A big problem with working in the polar regions is icebergs--as the Leg 113 ice observer reportedly joked, the sound of the drill string is a mating call for icebergs. Earlier in the drilling of the Bina-Bawi 1, oil was recovered from the drill string during a fishing operation from intervals in the Upper Cretaceous at the depths of 550 to 750 meters. |
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