【7A文】钻井工程英文课件10.1 Borehole integrity.ppt

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1、7/24/202110.1-1BoreholeIntegrity10.1-1SergueiJourineTexasA&MUniversity1April20037/24/202110.1-2OutlineDeepWaterBlowoutsandBridgingWellboreBridgingModelBridgingScenariosCurrentActivityConclusions7/24/202110.1-3DeepWaterBlowoutsFORMOREINFO...FlakL.:“ControlofWell

2、Issues”,“MarineInsurance–FacingtheChangedWorld”,InternationalUnionofMarineInsurance-NEWYORK–2002,on-linehttp://www.iumi-newyork-2002.org/Flak.htm4deepwatersustainedundergroundblowoutscontrolledbyBoots&Coots3broachedmudlinegasflows(20”casingsetBOPsinstalled)1BOP

3、FailureGasBlowoutNooilblowouthasreportedtodate7/24/202110.1-4DeepWaterBlowoutsProposedpracticalsolutions:capping,reliefwelldrilling,injectingsolidifiedreactivefluids,inducingbridging7/24/202110.1-5FastestandLeastExpensiveFORMOREINFO...SPE53974,IADC/SPE19917,htt

4、p://www.boots-coots-iwc.com/references/02_Ultra-deepwater%20blowouts.htm39%911951953BridgingBOPCementDepletionEquipmentMudReliefWellMissed0-1hour1hour-1day1-3days3days-1week1week-1month>1monthMissed15%36%14%14%10%4%7%DurationModeofControl7/24/202110.1-6Bridging

5、ModelsTheknownmechanismsthatgovernthebridgingphenomenonaremostlyqualitativeNoneoftheavailable[simple]simulatorscandirectlymodelthebridgingprocesses7/24/202110.1-7OutlineDeepWaterBlowoutsandBridgingWellboreBridgingModelBridgingScenariosCurrentActivityConclusions

6、7/24/202110.1-8ModelConceptWellborewillbridgeifALLCONDITIONSexist:Unstableproductiveformationand/oropenhole;Totalpressuredropexceedformationpressureorstablebridgeisformedwithinwellbore;Formationisstrongenoughtopreventundergroundblowout.UNSTABLEWELLBOREUNSTABLEF

7、LOWSTABLEBRIDGESTRONGFORMATION7/24/202110.1-9ModelConceptPressureProfilesIPRWellborestabilityOutflowperformanceProducedSolidsFEA&OUTFLOWFALSEDYNAMICBRIDGINGFEABridgeStabilityTRUESTATICBRIDGINGFormationStabilityFEATRUEFALSEUNSTABLEWELLBOREUNSTABLEFLOWSTABLEBRIDG

8、ESTRONGFORMATIONC1C2C2C27/24/202110.1-10Model:BackgroundInflowPerformance:Jonesequationsforliquid,gasandgascondensatereservoirs;Fetkovich(Normalizedbackpressure)equation.Out