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Four-stage purification system of solid control equipment

Mud cleaning system is mainly made of a group of store drilling fluid solid control tank and a group of equipment which rid of the solid phase in drilling fluid, solid control tanks which store drilling fluid are divided into circulating tanks and store tanks. Circulating tanks as a part of the ground cycle, there are shale shaker, vacuum degasser, deserter, desande and centrifugal on the surface of tank. The store tank is according to the need of drilling condition to allocated the different performance drilling fluid, or store drilling fluid which used for different drilling condition.

mud cleaning system

The purification process

The first level purification

The mud disposed in shale shaker. The allocation drilling fluid enter into the bottom well under the foundation of the drilling pump and carry drilling cuttings return the ground, through the elevated tubes enter into the shale shaker, the larger rock debris in drilling fluid are screened.

The second level purification

When drilling fluid have gas cutting, we can use vacuum degasser remove the gas which in the drilling fluid and can recovery the density of drilling fluid, steady the drilling fluid viscosity.

The third level purification

The drilling fluid is disposed by the 2level purification enter into the desander through the desander feed liquid pump, the harmful sold phase which the diameter is above 40-60um is separated in desander.

solid control

The fourth level purification

The drilling fluid is disposed by the 3level purification enter into the desilter through the desilter feed liquid pump, the harmful sold phase which the diameter is above 15-40um is separated in desilter.

The fifth level purification

The drilling is disposed by the 4level purification enter into the centrifugal through the centrifugal feed liquid pump, the small harmful sold phase particles are separated in centrifugal.

Usually, the 5 purification is working at the same time. If it works one equipment or several equipments, the parameters of the drilling fluid can meet the work requirements, it can work one equipment or several equipments. After the purification, drilling fluid can enter into the next common drilling cycle.

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