深锤电潜泵基础知识（英文）.ppt

CentriliftBasics,AguidetoCentriliftESPSystems,Centrilift,TheSystem,ConsistentlysettheindustrystandardAllthetechnologytoprovidethecompletesystemWiththesystemapproachtotechnology,wearebetterabletocontrolthequalityandreliabilityofproductsandservices,DownholeCentrifugalPump,IssonamedbecauseheadaddedtofluidisduelargelytocentrifugaleffectsDownholepumpsarecharacterizedby:SmalldiameterLargequantityofstagesHighdesignloads,DownholeCentrifugalPump,Isnormallydrivenbyatwo-polesubmersiblemotorattypicaloperatingspeedsofapproximately3,600rpm,DownholeCentrifugalPump,MaybedrivenatotherspeedseitherduetopowersourceorintentionallytomodifyperformanceFlow=(rpm)=(frequency)Head=(rpm2)=(frequency2)Power=(rpm3)=(frequency3),PumpStage,Worksbytransferringenergyprovidedbydrivertofluidtobemoved,GasHandling,GasSeparation,UsedinapplicationswherefreegascausesinterferencewithpumpperformanceSeparatesomeoffreegasfromfluidstreamenteringpumptoimprovepumpsperformanceGasseparatormethodsinclude:WellboreshroudingReverseflowintakesCentrifugeseparators,SpeciallydesignedrotatingchamberactsasacentrifugeForcesheavierfluidtooutsideandallowsfreegastomigratetocenterofchamberTwostreamsarephysicallyseparatedattopLiquidrichstreamisportedinternallytopumpinletGasrichstreamisventedtocasingannulus,RotaryGasSeparator,SealSection,IslocatedbetweenpumpandmotorMainfunctionistoprotectmotor,SealSection,ProtectsmotorfromcontaminationbywellfluidAbsorbsthrustfrompumpEqualizespressurebetweenwellboreandmotor,SealSection,Equalizespressureandpreventswellfluidfromenteringmotorbyusing:MechanicalsealsAbladdersystemAlabyrinthsystem,SubmersibleMotor,IsoilfilledIsatwo-pole,three-phase,3600RPMdesignMotorcomponentsdesignedtowithstand500oFtemperatures,SubmersibleMotor,Motorcoolingisachievedby:InternaloilcirculationFlowofwellfluidalongoutsideskin,VariableSpeedDrive,SimpletooperateMultiplefunctionsMostwidelyusedforoilfieldapplicationAvailableinNemaIorIIIEnclosures,Pumpfailuresinabrasiveenvironmentsarecausedby:1.Excessiveradialbearingwearespeciallycriticalintopandbottomofpumpwhereresultingvibrationistransferredtothemechanicalsealsorbetweencoupledunitslossofradialsupportthroughoutpumpresultsinvibrationandoperationalinstability2.Excessivestagedownthrustwearcancutthroughimpellershroud,causinghydraulicperformancedegradationandcanblockflowpassagewayslabandfielddatademonstratesthisfailuremodeisaclosesecondtoradialbearingfailure3.Erosivewearinflowpassagewayshydraulicperformanceslowlydegradesovertimelongertermfailuremodethandownthrustandradialbearingfailuregenerallyonlyobservedinhighlyabrasiveenvironments,PumpAbrasiveWear,ARMPumpLine,ARCoatedStages,Centriliftalsouse“Pumpguard”coating(polymer)onstagestoimprovestagewearcharacteristicsandincreaserunlifeA“PumpguardI”coatingwouldtypicallybeusedwithabrasives,inconjunctionwithARbearings.A“PumpguardII”coatingwouldbeusedforapplicationswithscaleandasphalteneproblemsandwouldnotnecessarilyrequireARbearingsCentriliftarealsotestingnewcoatingsforcontinualimprovement,ESP,ESPCP,ESPCPSystem,ThroughTubingConveyedDeploymentSequence,TheESPCP“ReducesCustomerCost”,ReducedpowerrequirementsoverESP,especiallywithheavy,viscosefluidNoemulsioncreation,aswithESP&JetPumpThroughTubingConveyedESPCPreducesworkovercostsMaximizesrunlifeofPermanentdownholeequipmentAllowsBackFlushCapabilitiesbyReversingMotor,Electrocoilsystems,MarkII-BCoiledtubingdeployedESPPowercableinsidetheCTAnnular/LinerproductionInvertedESPconfiguration,MarkII-BSystem(InvertedESP),DownholeOil/WaterSeparation“SubSep”,Separatesoil/waterdownholeProducesoilrichstreamtosurfaceInjectsvastmajorityofproducedwater(85-95%)intoadisposalzoneOilcarryoverof500ppmorless,SubSepEconomicDrivers,DOWSeconomicsbasedonabilitytoaccelerateandmaximizeproductionfromagivenwell/fieldGenerally,acceleratedoilproductionprovidesprimaryincentiveWaterhandlingcostdefinitionisimportantGenerally,reductioninOpex,waterhandlingandliftingexpensesissecondaryincentive,Down-holeWaterSinkIntroduction,AnewcompletionmethodologytomitigatewaterconingConventionally,operatorsperforatehighintheoilcolumntostayawayfromwaterDWScompletionsrelyonadditionalproductionperforations(inthewatercolumn)tocreateanoffsettingpressuredroptosuppressconing,DownHoleWaterSink,DWSCompletionforIn-situRe-injection,HPumpProductRangeDecksaverPlus,Verticallymounted,surfacepumpingsystemforuseinlimitedspaceenvironments.Twopump,orfourpumpintegrateddesign.SingleDecksaversystemusing40squarefeet,canreplac