Hydrocyclone desander in Mud drilling system

Introduction of Hydrocyclone Desander

Hydraulic cyclone is widely used in concentrator of nonferrous and ferrous, chemical, pharmaceutical, ceramics and other industries. It is mainly applied to the process of second paragraph grinding, coarse or concentrates re-grinding and the closed-circuit composed by mechanical grading machine, its grading operation is according to the particle size.


In closed circuit grinding system, it features high classification efficiency and fine over fall fineness under high mine concentration.Classification efficiency is higher for 5-10% than common screw grader.

It benefits for enhancing grader utilizing coefficient. Choose proper specification and mode of cyclone according to grinding processing capacity, over fall fineness and sedimentation concentration.

Hydrocyclone desander for drilling mud

Hydrocyclone is also called cyclone separator. Desander (10 in. cone) and desilter (4 in. cone) are drilling rig equipments with a set of hydrocyclones that separate sand and silt from the drilling fluid. Desander is installed after shakers and degasser but before desilter. Desander removes those abrasive solids from the drilling mud which cannot be removed by shakers.

Desander has no moving parts. The larger the internal diameter (ID) of the desander is, the greater the amount of fluid it is able to process and the larger the size of the solids removed.

Desander with 10 hydrocyclones are able to remove roughly 50 percent of those solids within the 40-50 micron range at a flow rate of 500 gallons per min (gal/min), while desilter with 4 hydrocyclones are able to remove approximately 50 percent of those solids within the 15-20 micron range at a flow rate of 60 gal/min. Micro fine separators are able to remove around 50 percent of those solids within the 10-15 micron range at a flow rate of 15 gal/min.


Desander is typically positioned next-to-last in the arrangement of solids control equipment, with decanting centrifuge as the subsequent processing unit. Desander is preceded by gas busters, gumbo removal equipment (if utilized), shale shakers, and mud cleaner (if utilized) and vacuum degasser.Desander is widely used in oilfield drilling.


OGEM’s CSQ series hydrocyclone desander


CSQ series desander is the second class and the third class solid control equipment to treat the drilling fluid. According to the size of the cone diameter, it is divided into Desander and Desilter. Usually the cone diameter is more than 6″is called Desander, and used as the second-control equipment in drilling operation. We commonly used 8 “and 10″ cones desander to separate solid-phase particle size 47-76μm in the drilling fluids.

Technical parameters of desander



CSQ200 CSQ250 CSQ300

Treating capacity


Desander cones size

8″ 10″ 12″

Working pressure


Feed inlet

125mm 150mm 150mm

Discharge output

150mm 200mm 200mm

Separation size

47-76μm 47-76μm 47-76μm

Bottom shaker screen



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