- hollow drill bit
- колонковое долото* * *колонковое долото
Англо-русский словарь нефтегазовой промышленности. 2011.
hollow drill bit
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Drill bit — For the fictional character, see Drill Bit (Transformers). For the cancelled skyscraper nicknamed Drill bit, see Chicago Spire. For the types used in drilling wells, see Well drilling. From top to bottom: Spade, lip and spur (brad point), masonry … Wikipedia
Drill bit (well) — A Drill bit, is a device attached to the end of the drill string that breaks apart, cuts or crushes the rock formations when drilling a wellbore, such as those drilled to extract water, gas, or oil. The drill bit is hollow and has jets to allow… … Wikipedia
Drill — For other uses, see Drill (disambiguation). Drill scheme A drill or drill motor is a tool fitted with a cutting tool attachment or driving tool attachment, usually a drill bit or driver bit, used for drilling holes in various materials or… … Wikipedia
Drill string — A drill string on a drilling rig is a column, or string, of drill pipe that transmits drilling fluid (via the mud pumps) and torque (via the kelly drive or top drive) to the drill bit. The term is loosely applied as the assembled collection of… … Wikipedia
drill collar — drill collar, a joint of hollow steel pipe fastening the drill pipe to the bit … Useful english dictionary
Drill pipe — Drill pipe, is hollow, thick walled, steel piping that is used on drilling rigs to facilitate the drilling of a wellbore and comes in a variety of sizes, strengths, and weights but are typically 30 to 33 feet in length. They are hollow to allow… … Wikipedia
core bit — noun a hollow drilling bit that is the cutting part of a core drill; allows core samples to be taken • Hypernyms: ↑drilling bit, ↑drill bit • Part Holonyms: ↑core drill * * * noun : a hollow cylindrical bit that is the cutting part of a core… … Useful english dictionary
diamond drill — noun : a usually annular drill faced with bort diamonds and used for rock boring * * * a drill having a hollow, cylindrical bit set with diamonds, used for obtaining cores of rock samples. [1820 30] * * * diamond drill, a drill or borer which… … Useful english dictionary
diamond drill — a drill having a hollow, cylindrical bit set with diamonds, used for obtaining cores of rock samples. [1820 30] * * * … Universalium
diamond drill — /ˈdaɪmənd drɪl/ (say duymuhnd dril) noun a drill having a hollow, cylindrical bit set with diamonds, used for obtaining cores of rock samples for geological or mineralogical examination …
coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… … Universalium
