Drilling fluid cross flow filtration principle2013-05-31
The basic principle of drilling fluid cross flow filtration
The cross flow
filtration principle is developed by people and is complete different with the
common filter cake method, but fusion the principle of tradition filtration
The methods of limit the thickness of drilling fluid mud
In the filtration process, the increase thickness is the main factor of obstruct the filtration speed improve, so should be limited.
The methods of limit filtration cake thickness:
·The gravity or centrifugal force or electrophoretic force and unload the filtration cake.
·Fluid spouting scraper or use brush discharge filtration cake.
·Use the filtration liquid related to the filtration medium contraflow unloads the filtration cake.
·Use vibration unload filtration cake or prevent the residue sediment on medium.
·Use cross flow filtration limit the filtration cake thickness.