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The classification of hydrocyclone used for solid control system

Hydrocyclone is divided into drilling fluid desander, desilter and miniature swirler according different diameter.

The drilling fluid desander: The diameter is 150-300mm swiler is called drilling fluid desander. The throughput of desnader is exceed 20-120m3/h in the pressure of 0.2MPa. In the normal condition of drilling fluid desander can eliminate 95% is bigger than 74um drilling cuttings and 50% is bigger than 30um drilling cuttings. When choose drilling fluid desander, the throughput should be 5 times of maximum discharge.

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The desilter: The diameter is 100-150mm swire is called desilter. When the input pressure is 0.2Mpa, the throughput can’t be less than 10-15m3/h. The normal working sate of drilling fluid desander can eliminate 95% bigger than 40um
drilling cuttings and 50% bigger than 15um drilling cuttings. The licensing throughput of desilter should be 1.25-1.5times of the maximum displacement.

We should add the right amount water in swire, decreasing drilling fluid density and viscosity and increasing the separation efficiency of swire.

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Design hydrocyclone must base the minimum liquid loss provide the maximal solid phase eliminating efficiency. And it accords to well field physical truth, installation the appropriate number hydrocyclones to increase the treating capacity to meet the requirements of all drilling fluid performance in the whole drilling system.


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