Hydrocyclone is a kind of mechanical separation equipment with simple and easy to maintain. Separation is realized by the admission energy change into the interior barrel centrifugal force. The centrifugal force act on drilling fluid, make drilling cuttings and other solid phase separated, this is follow Joe hicks’s law. Because the drilling cutting is too fine in some strata drilling, drilling fluid shale shaker can’t remove the drilling cuttings, so must use hydrocyclone remove the most of particles. Drilling fluid shale shaker avoid the big particles enter into the hydrocyclone and led to blocking, protect the hydrocyclone.
The best separate effect of hydrocyclone is the least liquid loss, obtain the maximum drilling fluid solid phase to discharge. The small and light particles are discharged through the overflow month. The biggest effect to the performance of hydrocyclong is the diameter, cone Angle, the diameter of bottom month, the pressure of admission, the model form viscosity of admission.
Advantages
1 The device is compact, the structure is simple, the price is cheap, have no movement parts
2 The throughput is big, the range of separation is large.
3 Adjustment and operation is easy, and it is easy to maintain.
4 The ability of separation is great, in some cases, can obtain the overflow of more fine and the higher of separative efficiency.
The shortcomings of hydrocyclone
1 The power consumption is big
2 When the viscosity of the pulp, the density of solid phase and the composition of particles size are changed, the separation particle size and separation effect is changes.
3 The working condition of desander pump is greatly influenced the hydrocyclone.
4 It can’t carry out super fine separation. It can’t disposed flocculating substance