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(on a drill rig) the assemblage of drill pipes that link the drill bit to the mechanism that imparts rotary or reciprocating motion.
Based on the Random House Dictionary, © Random House, Inc. 2014.
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safety valve was installed but could not be closed.
The downhole guidance probe is positioned directly behind the downhole motor, thus becoming an integral part of the
At the end of the
, at the bottom of the hole, a drill bit grind s away at the rock.
During drilling, elevators are used to add additional pipe to the
as the depth increases.
The gel will be pumped through the
and inflated packer equipped with a one-way check valve.
The bottom of the borehole normally heaves when the cleanout
is pulled back creating suction.
Do not tighten the chuck jaws against a moving
Drill pipe is the tubular member of the
to which tool joints are attached.
The operator pumps mud down the
while controlling the well bore pressures by using a choke at the outlet.
It is placed on the leading end of the rotating
and gradually bends the well bore until the desired angle is reached.
British Dictionary definitions for
(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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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