1. n. [Drilling Fluids]

A filtration process in which the slurry being filtered is being circulated over the filter cake, so that the cake is simultaneously eroded and deposited. The erosion rate depends on the shear rate of the fluid at the face of the cake. If the shear rate remains constant, cake thickness and filtration rate reach steady state, usually in a matter of hours. When the conditions change, a new steady state will be established.

Antonyms: static filtration

See related terms: bland coring fluid,  core,  dynamic filter press,  filtercake,  filter medium,  filter press,  filter-cake quality,  filter-cake thickness,  filtrate,  filtrate tracer,  filtrate volume,  fluid-loss-control material,  relative filtrate volume,  shear rate,  slurry,  spotting fluid