Desander is placed after shakers and degasser but before desilter. Different from the Shale Shaker separating solids by screen, desander removes those abrasive solids from the drilling mud by centrifugal force. Due to different density of solid and liquid, the very fine solid which cannot be removed by shakers could be separated out by desander. Desander is also the first one equipment to separate by using centrifugal force.
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