drill string

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drill string, pipe

(Mining & Quarrying) (in the oil industry) a pipe made of lengths of steel tubing that is attached to the drilling tool and rotates during drilling to form a bore

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drilling mud			National Oilwell Varco (NOV) and Schlumberger have created a joint venture to provide high-speed drill string telemetry systems to improve the efficiency and safety of oil and gas operations. NOV and Schlumberger form IntelliServ joint venture by Saudi Economic Survey Recent safety alerts reveal lessons learnt from incidents including an electric shock while carrying out routine maintenance on lighting systems, electrical arc flash injury involving an extension cord, confined space activity resulting in loss of consciousness and a dropped drill string. Website launches safety alert index by Oil & Gas News Deep bores expose the drill string to unpredictable working pressures and temperature extremes. Stringing along energy development: pipe strings down oil well bores ... by Modern Applications News			Driftweed Driftwind driftwood Drifty drill Drill barrow drill bit Drill bow drill down Drill harrow drill hole drill in drill instructor Drill jig Drill lathe drill master drill mine Drill pin Drill plow drill press drill rig drill rod drill sergeant drill site drill steel drill string drill-like drilled Driller drilling drilling bit drilling fluid drilling mud drilling pipe drilling platform drilling rig drillmaster drillstock drily Drimys Drimys winteri Drin Drina drink drink away drink down drink in Drink money drink off Drink offering drink up			drill press drill press drill presses drill presses Drill Pump drill rig drill rod drill rod drill runner Drill Seeding Drill sergeant Drill sergeant Drill sergeant hat Drill Sergeant Identification Badge Drill Sergeant Major Drill Sergeant of the Year Drill Sergeant Program Drill Sergeant Program Proponent Drill Sergeant School drill sergeants drill site drill sleeve drill socket Drill Status Guardsman drill steel drill steel drill stem Drill Stem Test drill stems drill string drill strings drill strings drill track drill up drill weave Drill-Bit Drill-Bit Stock Drill-Bit Stock Drill-Bit Stock Drill-Bit Stocks Drill-Bits drill-down analysis drill-hole logging drill-hole pattern drill-hole survey drill-in Drill-In Fluids drill-like Drill-on-the-Fly drill-over drill-stem test drillability Drillbit Drillbit Drillbit Drillbit Stock Drillbit Stocks Drillbits Drillbits Drillbits

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