rotary drill

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• rotary drill — noun : a rock drill that bores by a rotary action …   Useful english dictionary

• drill — I n. boring tool 1) to operate, use a drill 2) an electric, power; hand; rotary drill exercise 3) to conduct a drill 4) (mil.) close order drill 5) an air raid; evacuation; fire drill II v. 1) (D; intr.) ( to prospect ) to drill for (to drill for …   Combinatory dictionary

• drill pipe — noun or drill rod : a pipe or rod that drives a rotary drill bit (as in drilling wells) * * * (in oil well drilling or the like) any of several coupled tubes for rotating the bit and supplying drilling mud. * * * drill pipe, a pipe for driving a… …   Useful english dictionary

• drill stem — noun : the string of drill pipe that transmits power from the surface down to the drill bit in well drilling * * * drill stem, the part of a rotary drill that transmits power from the rotary table to the bit that grinds and crushes rocks. * * * n …   Useful english dictionary

• drill — Synonyms and related words: SOP, accustom, aculeus, acumination, application, apprentice, apprenticeship, athletics, auger, basic training, bed, bit, bite, bone, boning, bore, bore bit, borer, brace and bit, brainwork, break, break in, breaking,… …   Moby Thesaurus

• rotary — adj. & n. adj. acting by rotation (rotary drill; rotary pump). n. (pl. ies) 1 a rotary machine. 2 US a traffic roundabout. 3 (Rotary) (in full Rotary International) a worldwide charitable society of businessmen, orig. named from members… …   Useful english dictionary

• Drill bit sizes — Drill bits are the cutting tools of drilling machines. They can be made in any size to order, but standards organizations have defined sets of sizes that are produced routinely by drill bit manufacturers and stocked by distributors. In the U.S.,… …   Wikipedia

• Drill cuttings — Drill cuttings[1] are the broken bits of solid material removed from a borehole drilled by rotary, percussion, or auger methods. Boreholes drilled in this way include oil or gas wells, water wells, and holes drilled for geotechnical… …   Wikipedia

• drill — [n1] practice, exercise assignment, call, conditioning, constitutional, daily dozen*, discipline, dress, drilling, dry run*, gym, homework, instruction, learning by doing, maneuvers, marching, preparation, repetition, run through*, shakedown*,… …   New thesaurus

• 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 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