1. n. [Drilling Fluids]

The process of separating components of a slurry by leaving the suspended solids as filter cake on a filter medium while the liquid passes through. The process can be either static or dynamic.

See: bentonite,  colloidal solids,  dynamic filtration,  filtercake,  filter medium,  high-pressure, high-temperature filtration test,  low-colloid oil mud,  low-pressure, low-temperature filtration test,  mud program,  static filtration