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Slit-side solid sampler
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
A solid-tube sampler with a slight worm twist on the bottom and an offset slit in the side. when rotated, the lip of the slit scrapes a sample from the side of a borehole.
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Triple-tube core barrel, английский
A special core barrel used to take soil samples, as in foundation testing. the inner tube is swivel mounted and nonrotating and extends through, and a short distance beyond, the bit. hence, the bit only cuts clearance for the outer tube or core-barrel assembly, and the core taken by the inner tube is cut by a spudding action. the triple or core tube is mounted inside the inner tube to receive the core and is split longitudinally to facilitate removal of the core. also called glay barrel.
Drill core, английский
A solid, cylindrical sample of rock produced by an annular drill bit, generally rotatively driven but sometimes cut by percussive methods. see core.
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