Desilter and desander are important constituent parts of solid control equipment, their working will directly influence drilling fluid property, and influence drilling engineering.
Desander and desilter work principle
The drilling fluid will move to cone end close since the cone degree is rather small the drilling fluid will move more and more quickly. If the particle holding higher density will be pushed to cone well easily and strongly. Finally the solid will be discharged through drain output.
The basic principle is decanter separation principle. When the suspension particles pumped by centrifugal pump, the drilling fluid will be forced to move as swirl. This will result large centrifugal force. At same time, lighter solids will become reverse whirl go up straightly. When the centrifugal force is not sufficient this small part of particles will be involved by fluids and flow away
Different cones will lead hydrocyclone separator get different performance and process result. When we use hydrocyclone separator to separate useless solids there will be much barite in the under flow drilling mud.
Usually, hydrocyclone can be made with under set shaker or not. When there is under set shaker, the bigger solid particles will be separated out, while barite will go back to recycling tank
According to the requirements from clients, sometimes, not both these two equipment are needed in one system, it all depends on the working purpose. If you want learn more about desander and desilter, or other solids control equipment like shale shaker, decanter centrifuge, sand pump and so on, please contact Aipu solids control.
