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drilling mud

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drilling mud
n
(Mining & Quarrying) a mixture of clays, water, and chemicals pumped down the drill string while an oil well is being drilled to lubricate the mechanism, carry away rock cuttings, and maintain pressure so that oil or gas does not escape
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.drilling mud - a mixture of clays and chemicals and water; pumped down the drill pipe to lubricate and cool the drilling bit and to flush out the cuttings and to strengthen the sides of the hole
drilling fluid
lube, lubricant, lubricating substance, lubricator - a substance capable of reducing friction by making surfaces smooth or slippery


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Drilling mud, used to keep the drill bit cool, was spilled early Tuesday on K Street at Mono Street, Kern County road officials said.
BRIEFLY A MUDDY MESS FOR ROAD CREWS by Daily News (Los Angeles, CA)
Wastes included petroleum-related chemicals, solvents, sludge, construction debris and drilling mud.
Five Key Parcels That Are Ripe for Redevelopment by FINE, HOWARD / Los Angeles Business Journal
Designed to operate "in reverse", or rather, to cause shaft rotation by the supplied differential pressure, such motors are referred to as Mudmotors, referring to drilling mud that provides a hydraulic medium to drive the rotor, lubricate the drill bit and remove the debris.
Knowledge of the Types of Pumps, Their Design and Application Is ... by Business Wire
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