drill column

drill column

[′dril ‚käl·əm]
(mining engineering)
A steel pipe that can be wedged across an underground opening in a vertical or horizontal position to serve as a base on which to mount a diamond or rock drill.
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The tools are - Hand tools, measuring instruments and control,- Hand tools (screwdrivers, pliers, wrenches) and other measuring hand instruments and electrical control, mechanical,- Site and workshop equipment,- Tools heavy and commissioning (fixed or mobile): compressor, pressure washer, hacksaw / wood, a drill column, other machine tools, spare parts and accessories of machine tools,- Power tools, electrical, thermal, pneumatic and hydraulic.
Investigators know the explosion was triggered by a bubble of methane gas that escaped from the well and shot up the drill column, expanding quickly as it burst through several seals and barriers before igniting.
The original blowout was triggered by a bubble of methane gas that escaped from the well 18,000 feet into the earth and shot up the drill column, expanding quickly as it burst through several seals and barriers before exploding at the rig one mile above the seafloor.
Rescued rig workers described how a bubble of methane gas escaped from the well and expanded as it shot up the drill column before exploding.
Part VIII: a) Drill column with mechanical feed - 1 piece
engine lathes, shears, cnc machining center, universal center lathes, cnc tool grinder drill column and table saw, floor sander, hand rolls (stranding), table grinder, drill floor.