Desander

Desander
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Desander & Desilter.jpg
Desanders and desilters are drilling rig equipment with a set of hydrocyclones that separates sand and silt from the drilling fluid. Desander is installed after shakers and degasser but before desilter. Desander removes those abrassive solids from the drilling mud which cannot be removed by shakers. Desilting is employed in dams and lakes.
A centrifugal pump is used to pump drilling fluid through the set of hydrocyclones.
Contents
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* 1 Desander For Solids Control
* 2 See also
* 3 External links
o 3.1 Manufacturers

[edit] Desander For Solids Control

Desander, as stated earlier, have no moving parts. The larger the internal diameter (ID) of the desander is, the greater the amount of drilling fluids it is able to process and the larger the size of the solids removed. Desander (10 in/254 mm Cone) are able to remove roughly 50 percent of those solids within the 40-50 μm (micron) range at a flow rate of 500 US gallons per minute (0.032 m3/s) (USgal/min), while desilter (4 in/101.6 mm Cone) are able to remove approximately 50 percent of those solids within the 15-20 μm (micron) range at a flow rate of 60 US gallons per minute (0.0038 m3/s). Micro fine separators are able to remove around 50 percent of those solids within the 10-15 μm (micron) range at a flow rate of 15 US gallons per minute (0.00095 m3/s). Desander is typically positioned next-to-last in the arrangement of solids control equipment, with decanter centrifuge as the subsequent processing unit. Desander are preceded by gas busters, gumbo removal equipment (if utilized), shale shaker, mud cleaner (if utilized) and vacuum degasser.Desander is widely used in oilfield drilling.
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