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make-up water

1. n. [Drilling Fluids]

Water added to maintain or dilute a water-mud system. The added water may be fresh water, seawater or salt water, as appropriate for the mud. Make-up water volume is an important parameter in a material balance check on solids content and solids removal efficiency for a mud system. The amount of dilution strongly influences mud economics. If soft make-up water is needed, treatments to remove hardness ions should be done prior to adding the water to the mud to avoid clay flocculation and polymer precipitation.

Synonyms: dilution water

See: calcium testchloride testclay-water interactionhard waterhardness ionmaterial-balance equationnative-solids mudpeptized clayseawater mudtotal hardness test

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