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.ZoneSepPMPSubSepEconomicDriversDOWSeconomicsbasedonabilitytoaccelerateandmaximizeproductionfromagivenwell/fieldGenerally,acceleratedoilproductionprovidesprimaryincentiveWaterhandlingcostdefinitionisimportantGenerally,reductioninOpex,waterhandlingandliftingexpensesissecondaryincentiveDown-holeWaterSinkIntroductionAnewcompletionmethodologytomitigatewaterconingConventionally,operatorsperforatehighintheoilcolumntostayawayfromwaterDWScompletionsrelyonadditionalproductionperforations(inthewatercolumn)tocreateanoffsettingpressuredroptosuppressconingDownHoleWaterSinkBypassToolUpperESPSealborePackerLowerESPBypassToolProductionPerforationsRetrievableESPPackerLoopPerforationsSinkPerforationsDWSCompletionforIn-situRe-injectionHPumpProductRangeDecksaverPluslVerticallymounted,surfacepumpingsystemforuseinlimitedspaceenvironments.lTwopump,orfourpumpintegrateddesign.lSingleDecksaversystemusing40squarefeet,canreplacetraditionalsystems300-500squarefeetrequirement.lA2000hp,4PumpDecksaverusing80-100squarefeet,canmove70,000bpdandup.lThecapitaloutlayforaDecksaversystemisgenerally40%lessthanPDpumpequivelentQuestionTimeCentriliftBasicsQuestionTime