深锤电潜泵基础知识(英文).ppt

深锤电潜泵基础知识(英文).ppt

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CentriliftBasicsAguidetoCentriliftESPSystemsCentrilift,TheSystemConsistentlysettheindustrystandardAllthetechnologytoprovidethecompletesystemWiththesystemapproachtotechnology,wearebetterabletocontrolthequalityandreliabilityofproductsandservicesDownholeCentrifugalPumpIssonamedbecauseheadaddedtofluidisduelargelytocentrifugaleffectsDownholepumpsarecharacterizedby:

SmalldiameterLargequantityofstagesHighdesignloadsDownholeCentrifugalPumpIsnormallydrivenbyatwo-polesubmersiblemotorattypicaloperatingspeedsofapproximately3,600rpmDownholeCentrifugalPumpMaybedrivenatotherspeedseitherduetopowersourceorintentionallytomodifyperformanceFlow=（rpm）=（frequency）Head=（rpm2）=（frequency2）Power=（rpm3）=（frequency3）PumpStageWorksbytransferringenergyprovidedbydrivertofluidtobemovedGasHandlingGasSeparationUsedinapplicationswherefreegascausesinterferencewithpumpperformanceSeparatesomeoffreegasfromfluidstreamenteringpumptoimprovepumpsperformanceGasseparatormethodsinclude:

WellboreshroudingReverseflowintakesCentrifugeseparatorsSpeciallydesignedrotatingchamberactsasacentrifugeForcesheavierfluidtooutsideandallowsfreegastomigratetocenterofchamberTwostreamsarephysicallyseparatedattopLiquidrichstreamisportedinternallytopumpinletGasrichstreamisventedtocasingannulusRotaryGasSeparatorSealSectionIslocatedbetweenpumpandmotorMainfunctionistoprotectmotorSealSectionProtectsmotorfromcontaminationbywellfluidAbsorbsthrustfrompumpEqualizespressurebetweenwellboreandmotorSealSectionEqualizespressureandpreventswellfluidfromenteringmotorbyusing:

MechanicalsealsAbladdersystemAlabyrinthsystemSubmersibleMotorIsoilfilledIsatwo-pole,three-phase,3600RPMdesignMotorcomponentsdesignedtowithstand500oFtemperaturesSubmersibleMotorMotorcoolingisachievedby:

InternaloilcirculationFlowofwellfluidalongoutsideskinVariableSpeedDriveSimpletooperateMultiplefunctionsMostwidelyusedforoilfieldapplicationAvailableinNemaIorIIIEnclosuresPumpfailuresinabrasiveenvironmentsarecausedby:

1.Excessiveradialbearingwearespeciallycriticalintopandbottomofpumpwhereresultingvibrationistransferredtothemechanicalsealsorbetweencoupledunitslossofradialsupportthroughoutpumpresultsinvibrationandoperationalinstability2.Excessivestagedownthrustwearcancutthroughimpellershroud,causinghydraulicperformancedegradationandcanblockflowpassagewayslabandfielddatademonstratesthisfailuremodeisaclosesecondtoradialbearingfailure3.ErosivewearinflowpassagewayshydraulicperformanceslowlydegradesovertimelongertermfailuremodethandownthrustandradialbearingfailuregenerallyonlyobservedinhighlyabrasiveenvironmentsPumpAbrasiveWearARMPumpLine11ModuleconsistsofstandardstageslocatedinintermediatepositionsaboveanARstage.ThrustistransferredtotheARinsertsetthroughadjacentimpellerhubswithinthemodule.Patenteddesignprovidesenhanceddownthrustandradialsupportwearprotectionineverymodule2233Apremiumpumplineformildtoaggressivewellconditionsthatgivesenhancedradialandthrustwearprotection.ARCoatedStagesCentriliftalsouse“Pumpguard”coating（polymer）onstagestoimprovestagewearcharacteristicsandincreaserunlifeA“PumpguardI”coatingwouldtypicallybeusedwithabrasives,inconjunctionwithARbearings.A“PumpguardII”coatingwouldbeusedforapplicationswithscaleandasphalteneproblemsandwouldnotnecessarilyrequireARbearingsCentriliftarealsotestingnewcoatingsforcontinualimprovementCentriliftMotorCentriliftSealCentriliftCableESPESPCPGearreducerFlexshaftassemblyESPPumpPCPumpESPCPSystemThroughTubingConveyedDeploymentSequenceMotorGearReducerSealTubingCrossoverTubingCableLocatorFlexshaftPCPumpCentralizerPackoffAnchorTheESPCP“ReducesCustomerCost”ReducedpowerrequirementsoverESP,especiallywithheavy,viscosefluidNoemulsioncreation,aswithESP&JetPumpThroughTubingConveyedESPCPreducesworkovercostsMaximizesrunlifeofPermanentdownholeequipmentAllowsBackFlushCapabilitiesbyReversingMotorElectrocoilsystemsMarkII-BCoiledtubingdeployedESPPowercableinsidetheCTAnnular/LinerproductionInvertedESPconfigurationMarkII-BSystem（InvertedESP）ElectroCoil,CTw/InternalPowerCableShearSubElectricalPenetratorAdaptor,HighPressureThrust/SealingAdapterPumpSealSectionMotorIntakeStinger,PerforatedPackerw/HydraulicControlledSSSVCasing/LinerProductionPerforationsPump,DischargeSolidsSkirtDownholeOil/WaterSeparation“SubSep”Separatesoil/waterdownholeProducesoilrichstreamtosurfaceInjectsvastmajorityofproducedwater（85-95%）intoadisposalzoneOilcarryoverof500ppmorlessHydrocycloneTubeInjectedWaterSealProd.ZoneInj.ZoneSepPMPSubSepEconomicDriversDOWSeco