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filter medium

1. n. [Drilling Fluids]

A permeable material used in a filtration device through which filtrate passes and on which the filter cake is deposited, commonly a specifically designed filter paper or permeable disk used in a static filter press that meets API standards. The filter medium can be the cylindrical, permeable core or disk used in a dynamic filtration test or permeable rock downhole on which a filter cake is deposited in a wellbore.

Synonyms: filter media

See: capillary suction time testdynamic filter pressfilter pressfluid-loss controlfluid-loss-control materialhigh-pressure, high-temperature filtration testlow-pressure, low-temperature filtration testparticle-plugging apparatusrelative filtrate volumestatic filtrationwastewater cleanupwater clarification

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