Production of sand and solids from oil & gas wells is an ongoing problem for processing facilities. Its often caused by unconsolidated reservoirs, high production rates, or the failure of gravel packs and other sand control measures.Detrimentaleffectsofsandproductionincludemechanicaldamage&erosiontochokes,fow lines, control valves, pumps and other equipment; reduced equipment capacity due to reduced residence time; or due to partial blockage of pipelines, and high environmental discharge costs.WELLHEAD DESANDERCYCLONIC SOLIDS SEPARATION & REMOVALSolids handling is an increasingly important task, and aneffcientprocessdealingwiththeproblemneeds toaddresstheeffectiveremovalofallsolidsfrom multiphasefows,upstreamordownstreamofthe choke.AWellheadDesanderbyeProcessisacyclone based process system, providing the most cost effective solution for the separation and removal of solids.eProcessWellheadDesandercyclonesarepressure drop dependant, where multiphase fuids are directed intothecyclonecausingthefuidstospinundera centrifugal force. These strong forces cause the solids and fuids to separate. Gasin particular, disengagesand separatesquickly. The heaviersolidsareforcedoutwardtowardthecyclone wall, and the lighter fuids and gas phases migrate in the opposite direction toward a centre core.Solidsspiraldownthecyclonetotheunderfowoutlet, whiletheremainingfuidsareforcedintheopposite directiontotheoverfow.Theprocessisasimpleand effective separator, with a 2-3 second retention time, and no moving parts.loosely arranged Applications:Wellstream Sand removal;Coiled Tubing Cleanup;Underbalanced Drilling Operations; Benefts:No moving parts, low maintenance anddowntime, result in signifcant capital andoperating cost savings;Compact; 10% ofthesize and weight ofconventional flter systems; ease of mobilisation;Activatesoilandgaswellspreviouslyshut-indueto excessive sand production;Eliminates solids erosion on downstream pipework, valves, chokes, and process vessels;Providessolidsremovalpriortooilcontaminationand eliminatessludgeformationandotherdiffcultsolids accumulation problems; Operations:Wellhead Desanders are available in many sizes., separating 98% of particles from 5 to 50 microns and larger, and up to 99% by weight;Operating pressure drop requirements vary from 10to60psig,withthelargerunitshandling solidsvolumesofupto20%andthesmaller units handling up to 1-2% by volume; Storage & Transportation:Solidsaretypicallycollectedintodedicatedsecondary accumulatorvessels.Forhighoperatingpressures,these are also used to prevent high quantities of gas fashing to atmosphere during the purge cycle;To ensure liquids content in the fnal batch are minimised, water is reduced by the use of overfow tank designs. The solids remain, and the water is collected and pumped to a slops tank. The fnal sand slurry is typically >80% solids by volume;The collected solids are removed either by tank replacement, or by vacuum truck operation;