wellplan--水力参数计算.

WELLPLANHydraulicAnalysisContents1、TopicsDiscussedintheModule2、Analysisprocess3、IntroductionandConcepts4、NavigatingHydraulicsModule5、ExercisesTopicsDiscussedintheModuleStudycasestoocomplexforhandcalculations“whatif”analysisismadeeasyOptimizeflowratesbasedon:bitperformance(maximizeROP)holecleaningStudyECD’swithregardtolimitationsof:porepressure（孔隙压力）fracturepressure（破裂压力）Avoidkicks（井涌）andformationdamageresultingfromswabandsurgepressuresObjectivesExplainthepurposeoftheHydraulicsmodule(模块).StatewhentheHydraulicsmoduleshouldbeused.ExplainthedifferentmodesofHydraulicsanalysis.ExplaintheuseofHydraulicsmoduleforpracticalapplicationHolecleaningmodelisbasedonempiricalrelationshipscoupledwithanalyticalformulationsBasisforfrictionalpressurelosscalculationsusingRheologicalmodels（流变模型）suchasBinghamPlastic,PowerLaw（幂律）,Newtonian,Herschel-Bulkley,andGeneralizedHerschel-Bulkley.Swab/Surgecalculationsbasedonconventionalsteady-statemodel（稳定模型）.Effectofwellborecirculatingtemperaturesonfluidpropertiesarebasedontransientmodels.PiperoughnessandeccentricitycalculationsforHerschel-Bulkleyarebasedonempiricalcorrelations.Pressuredropsacrossmudmotors,MWD’s,splitflow（分流）componentssuchasunderreamersandholeopenersareaccounted.OverviewDrillingCont.onnextslideReviewDataMode:HoleCleaningOperationalViewPlotsPumpLimitations.PumpRateRangeMode（压力损失，环空流速，环空排量）ProvideSolution--BestPump--MinQSensitivity-RPM-ROPProblemOKSelectNewPumpProblemCheckCriticalAnnulusVelocityandQModeOKAnalysisprocessAnalysisprocessMode:Pressure:PumpRateFixedViewQuickLook.OKViewPieCharts.ViewPlotsRateDialogOptimizePlanningImpactForceHHPOptimizeNozzleCheckFinalCheck-HoleCleaning--PressureLoss--ECDChartsOKOKOKOKSignOffWhenShouldIUseHydraulicsModulePressureLossAnnularVelocitySwab/SurgeHydraulicsOptimizationHoleCleaningIntroductionandConceptsRheologicalModelsBinghamPlastic,PV(塑性粘度)&YP(动切力)dependentPowerLaw,n（流性指数）&k（稠度系数）coefficientsHerschelBulkley,n&kcurvefitfromFanndataNewtonian(Water)User-definedSurfaceEquipmentConfigurationsSeveralpumps-active/inactiveECD-accommodatesdeviatedwells(主要适用于斜井)PV＝Φ600-Φ300（MP.s）YP=1/2(2Ф300-Ф600)(Pа)ClassicalMethodsofbitjetoptimization:4calculationmethodsMaximumhydraulichorsepowerMaximumbitjetimpactforceMaximumnozzlevelocityPercentsystempressurelossatthebit1methodusesactualrigcirculatingpressuresGraphicalmethods(BitVendorOptimizationMayBeRqd.)CalculatestemperatureeffectsonfluidrheologyanddensityConsidersworkstringeccentricityConsiderspiperoughnessIntroductionandConcepts1.HoleCleaningOperationalParametric2.Pressure:PumpRateRange3.Pressure:PumpRateFixed4.Swab/SurgeTrippingSchedulePressureandECD5.HydraulicsOptimizationPlanningGraphicalMethodsNumericalMethodsOperationsmethodbasedonrigsite（钻井现场）data.IntroductionandConceptsIntroductionandConceptsCuttingsTransportMechanismHoleCleaningHoleHigh-SideHoleLow-SideDrillstring(Pipe)Eccentricity•Stringoffsettolow-sideofhole•AffectsAnnularVelocityprofile•Low-velocityZoneoccurswhereleastannularclearanceDropinannularvelocityonholelow-sideHoleAngle•GravitationalVelocitycomponentactstowardsholelow-side•Affectsbothdrilledcuttings&mudweightingsolidsGravityactstowardsholelow-sideIntroductionandConceptsHoleCleaningCriticalFlowRateforCuttingsBedBuild-UpAscuttingsbedrises,theannularflowareareduces,andannularmudvelocitywillincreaseCuttingsbedrisesAnnularflowareareducesAnnularvelocityincreasesthroughreducedareaBedcontinuestoriseuntilmudvelocityoverbedreachesa“criticalvalue”,wherestrongerforceswilldislodge（驱除）furthercuttings.Bedreachesanequilibrium（平衡）height.“CriticalFlowRate”istheminimumflowratetomaintainazerobedheightCuttingsTransportMechanism-ForcesForcestendingtoholdcuttingsinthebed•GravityForce•FrictionForceForcestendingtomovecuttingsoutofthebed•Drag（拖曳）Force•LiftForceGravityForceFrictionForceLiftForceDragForceLiftForce•Tendstoliftcuttingsintomainflow•Arisesduetoasymmetric（不对称的）fluidvelocitydistributionand/orturbulenteddies（湍流）DragForce•Tendstodragorrollcuttingsoutofthebed•CausedbyfluidviscousdragonupperexposedsurfaceofcuttingsIntroductionandConceptsHoleCleaningIntroductionandConceptsHoleCleaningCuttingsBedControlKeyParameters•AnnularVelocity•MudViscosity•PipeRotation•PipeEccentricityOtherFactors•Specificholeconditions•FormationpropertiesStringRPM•HigherRPMBetterHoleCleaning•Rotationmechanicallyagitatescuttings•Liftscuttingsintothehigh-velocityflowstreamHigherROPHigherCuttingsLoadingStringRPMROPExample•Needstobeabove120rpmtocleandeviatedholesover9.5”diameter•Stepchangeinholecleaningcanbeachievedabove180rpmPressureLossAnalysisFeaturesCalculatescirculatingsystempressurelossesTwoanalysismodes:PumpRateFixedPumpRateRangeECDasafunctionofdepththeabsolutecirculatingpressureexpressedasagradient,atanypointintheannulus.PressureLossCalculationsBasedonchosenRheologicalModelProgramBackgroundFunctionsDetermine:AverageVelocityofmudinpipeandannulus.CriticalVelocityofmudinpipeandannulus.Whetherlaminar,transitionalorturbulent.BitPressureDrop∑allpressuredropsPressureLossComponentsSurfaceEquipmentStringToolJo