drilling mud

Noun
  1. 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 (synset 114863121)
    is a type of: lube, lubricant, lubricating substance, lubricator - a substance capable of reducing friction by making surfaces smooth or slippery
    same as: drilling fluid

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