Solids Control Equipments Manufacturer

Home > Service > Application of desanders and desilters

Application of desanders and desilters

2015-11-06

Desander is the second equipment in solids control system, it is used to separate the solid phase particles whose diameter is more than 44μm from drilling fluid. Desilter is the third class equipment in solids control system, it is used to separate the solid particles whose diameter is 15-44μm from drilling fluid. 


Desander Application

Normally 8in, 10in or 12in diameter. Flow rate 1 200 gpm. The application of desanders will depend upon the type of mud in use. A desander:shall be run continuously with unweighted water based muds to maintain low mud gradient, in top hole sections only may be run sparingly with weighted water based mud.

Shall never be used with oil based mud.
The purpose of Desanders is: 
To maintain sand content of mud below 0.5%.
To prevent overloading of desilters.
A feed rate of 300 - 400 gpm shall be used.
Desanders shall be balanced to produce a spray discharge using the procedure outlined above before use.
Cones shall be stripped and cleaned after every period of continuous use.
For optimum performance, the desander overflow should be routed to the desilter suction tank.
Desilter Application

The following guidelines for application of desilters shall be applied:
Shall be run continuously with unweighted water based muds to maintain low mud gradient.
shall not be run with weighted water based mud systems.
Shall not be used with oil based mud.
The purpose of desilters is to maintain low levels of solids in unweighted mud systems.
Each desilter bank shall be assigned a dedicated pump.