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Come-along
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
- An open, fixed-jaw spanner used to grip, hold, and lift rods, casing, or piping. compare lowering iron.
- A device consisting of two serrated jaws so attached to a ring that a pull on the ring causes the opposing jaws to close and grip a wire, cable, or any cylindrical piece of drill equipment
- Рычажная лебёдка
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Cylindrical, английский
Цилиндрический
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Compass deflection, английский
- The difference, expressed in degrees, between the direction a magnetic compass needle points and true or astronomical north.
- Differences, expressed in degrees, between magnetic-north directions and the direction a magnetic compass points, owing to local magnetic interference.
Collared, английский
- A borehole just begun, in which a length of pipe has been placed.
- Pipe or drill rods coupled together by means of threaded couplings, the outside diameter of which is larger than the outside diameter of the pipe or rods.
- A drill hole deep enough in rock to keep the drill from slipping.
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