Desander— the detailed introduction

Desander is a very important part when using machines to separate solids and liquids, and widely used in oilfield and hdd and mining projects. Here is the detailed information, the definition, and the desander’s use, especially in oilfield, then I will recommend the GN ZQJ series desander.

What is a desander

bentonite desander

hydrocylone bentonite desander

Desander is the second class and the third class solid control equipment to treat the drilling fluid. 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
When referring the desander, hydrocyclones are very urgent to come to the stage. Hydrocyclones is also called cyclone separator.Hydrocyclones are drilling rig equipments with a set of hydrocyclones that separates sand and silt from the drilling fluid. Desander is installed after shakers and degasser but before desilter. It removes those abrassive solids from the drilling mud which cannot be removed by shakers.
drilling rig equipment with a set of hydrocyclones that separates sand and silt from the drilling fluid. …

a centrifugal device for removing sand from drilling fluid to prevent pump abrasion.

A specially designed piece of equipment consisting of a series of screens and hydrocyclones which remove sand and silt particles from the slurry

Desander is widely used

Desander is widely used in various field, the one we always know is in oil and gas drilling, to separate the drilling cuttings, in oilfield it  is one part of solids control system, just after the shale shaker, you can get the detailed information of solids control system here, and then is the most important part, and the enviorment friendly phase, to deal with the used drilling fluids.
Another one is some likely with the oil and gas field, it is drilling work, HDD&UNDERGROUND—-Mud Recycling  System.
Desander is also used in MINING&INDUSTRIAL as one part of  Slurry Separation Plant

Desander in oilfield, take GN ZQJ series desander as an example

ZQJ300S desander is the largest  in GN ZQJ series desander, its treating capacity is 240m3/h(equal to 1056GPM), it adopts 1~2pcs 12″  cone, 12″ cone =120m3/h, it means that if you choose one 12″ cone, the treating capacity of the desander is 120m3/h, if you choose 2pcs 12″ cone, the treating capacity is 240m3/h. It can be customized.

It can separate 47~76 μm particles, the screen area is 1.0m2. If there is no “S” in the model No., it means no under fluids shaker. Our Kuwait clients have bought 5 sets of desander and desilter but without under fluids shaker.

ZQJ Desander Technical Parameters

Model ZQJ200S ZQJ250S ZQJ300S ZQJ200 ZQJ250 ZQJ300
Screen area 1.0m2(600×1600mm) No Under fluids  Shaker
Capacity ≤120m3/h











≤ 1056GPM

Cone size 8″ 10″ 12” 8″ 10″ 12”
Cone number 1-2 1-2 1-2 1-2 1-2 1-2
Pressure 0.15~0.35Mpa 0.15~0.35Mpa 0.15~0.35Mpa 0.15~0.35Mpa 0.15~0.35Mpa 0.15~0.35Mpa
Inlet Size 75-100mm 100-150mm 150-200mm 75-100mm 100-150mm 150-200mm
Outlet Size 125-150mm 150-200mm 200-250mm 125-150mm 150-200mm 200-250mm
Separation size 47-76μm

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