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
drilling mud in American English
US
a suspension of fine-grained mineral matter, usually in water, circulated in oil-well drilling to cool and lubricate the drill bit, plug up porous surfaces, etc.
drilling mud in the Oil and Gas Industry
(drɪlɪŋ mʌd)
noun
(Extractive engineering: Field development, Equipment)
Drilling mud is a mixture of fluids and solids which is used downhole in the drilling process.
Drilling mud is a circulating fluid used to bring cuttings out of the well bore, to cool the drillbit, and to provide hole stability and pressure control.
Drilling mud is a substance which helps the drilling operation by cooling, lubricating, and cleaningthe bit, reducing friction, and transporting cuttings from bit to the surface.
Drilling mud is a mixture of fluids and solids which is used downhole in the drilling process.