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Chuck up
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
A command indicating that drill rods are to be inserted in the drive rod of a diamond drill and that they are to be clamped in the chuck preparatory to resuming drilling.
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Preparatory, английский
Подготовительный (сигнал)
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Circulating head, английский
A casing-to-drill-rod coupling. when attached to the top of casing, it is used during the process of pumping cement slurries or circulating water through the casing, forcing the fluid to flow out of the casing into the drill hole between the outside of the casing and the walls of the borehole. also called stuffing box, tight head.
Chip bit, английский
A bit in which the major portion of the inset diamonds are either diamond chips or thin, tabular-shaped, low-grade drill diamonds.
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