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Overdrilling
Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
The act or process of drilling a run or length of borehole greater than the core-capacity length of the core barrel, resulting in loss of the core.
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Diamond drilling, английский
The act or process of drilling bore¬holes using bits inset with diamonds as the rock-cutting tool. the bits are rotated by various types and sizes of mechanisms motivated by steam, in¬ternal-combustion, hydraulic, compressed-air, or elec¬tric engines or motors. see diamond drill.
Rat-holing, английский
The act or process of drilling a deflected or pilot hole. see rathole 2, 3.
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