iadc dec q1 17 - engineering cost out through well design issued · 2020-02-02 · iadc drilling...

IADCDrillingEngineersCommitteeTechnologyForum|WellLifecycleDesign

DECTechnologyForum|WellLifecycleDesignHouston|Texas29th March2017

WellDesignEngineeringoutCostforIntervention,RejuvenationandCessationofProductionOperationsStevenAllanCanny

IADCDrillingEngineersCommitteeTechnologyForum|WellLifecycleDesign 1

AGENDA

1 WellDesignFundamentals

2 InternationalWellDesignExamples

3

FormationEvaluationandWellDevelopment4

WellIntegrity– NORSOKD-010

5 Logging

6 CaseStudies

7 WorkoverwithRe-Perforation

8 ReservoirAbandonment

9 SlotRecoveryandInfillDrilling

WellDesign- EngineeringoutCostforIntervention,RejuvenationandCessationofProductionOperations

“Aninternationalapproachtoleveragingwelldesignandintegrityoperationsintheconstructionphase,toreducethecostofworkover,reservoirabandonmentandrejuvenationoperations.”

StevenAllanCannyEngineeringLeadWellAbandonmentandInterventionServices10 SummaryandQuestions


WellDesignFundamentals2

“Aconduitallowingtheflowofhydrocarbonstosurface”§ Acollectionofverifiedwellbarrierelementsthatassureintegrityof

theconveyancepath:– CasingTubulars– AnnularCement– WellheadSuspensionSystem,CasingHangersandLockDownseals– CompletionPackers– CompletionTubulars

§ FlowAssuranceandControl– DownholeValves– ChemicalInjection(flowassurance,preventativechemicals)– SurfaceControlValvesandChokes

Figure8.8.2,NORSOKD-010,Rev3


ExampleWellDesign3

Reservoir§ NormallyPressurisedGasReservoir§ DualTargetzones,withfurthershallowtargetsidentifiedfor

midlifere-completionandsidetrackuponreservoirdepletion

CasingPlan§ 13-⅜”x9-⅝”x7”with3-½”Completiontubing§ SandControlCompletion§ OpenCAnnulustosidetrack13- ⅜”inlatelife§ DeepSidetrackintendedin7”Productioncasinginthecaseof

wellintegrityissues

Completion§ RetrievableProductionPackertorecoverduringworkover§ 7”Productioncasingtoaccommodatefutureartificiallift

completion


NCSWellArchitectureExamples4

NormallyPressurisedHorizontalOffsetWell

§ 30”x20”x13-⅜x9-⅝x7”Liner

§ HorizontalReservoirSection

§ HighDeparture§ HighMDandTvD§ Open13- ⅜”Annulusfor

ShallowSidetrack§ Open9- ⅝”Annulusfor

DeepSidetrack§ 6-⅝multi-zoneopenhole

completionwithmultiplecontrollines

§ GasLiftCompletion§ Conductorre-usefor

plannedslotrecovery


NorsokStandardD-010 “WellIntegrityinDrillingandWellOperations”

5

§ WellIntegrityStandardcoveringDrilling,WellServicingandAbandonmentOperations

§ Moststringentinternationalstandard,used“asis”orasabaseforInternationalOilCompaniesinternalwellintegritystandards

§ Prescriptiveapproachtobarriersandtheverificationandmonitoring

§ DualWellBarrierApproachinwellswithflowpotentialtosurface:“ensurethatnosinglefailureofaWellBarrierorWBEcanleadtouncontrolledflowofwellborefluidsorgasestotheexternalenvironment”

§ Design,VerificationandmonitoringofWellBarriers

Figure9.6.2.2,NORSOKD-010Rev4

Figure9.6.2.1,NORSOKD-010Rev4Figure4.2.3.1,NORSOKD-010Rev4


WellBarriersandWellBarrierElements6

WellBarrier“WB”“envelopeofoneorseveralwellbarrierelementspreventingfluidsfromflowingunintentionallyfromtheformationintothewellbore,intoanotherformationortotheexternalenvironment”

WellBarrierElement“WBE”“aphysicalelementwhichinitselfdoesnotpreventflowbutincombinationwithotherWBE’sformsawellbarrier”

WellBarrierElementAcceptanceCriteria“technicalandoperationalrequirementsandguidelinestobefulfilledinordertoverifythewellbarrierelementforitsintendeduse”

Primary WellBarrierFluid Colum Drillingmud

Secondary WellBarrierCasingCement AnnularCement

Casing -Wellhead Metallicgasket

HighPressure Riser IfInstalled

DrillingBOP -

Figure5.8.1,NORSOKD-010,Rev3


Table22,NORSOKD-010Rev004


Table24,NORSOKD-010Rev004


WellBarriersinSuspensionandAbandonment9

WB3

WBE2

WBE1

WB3

WB3

WBE2

WBE1

WB3

SecondaryWellBarrier

PrimaryWellBarrier

SurfaceWellBarrier

Example1VerifiedAnnularCementWellBarrierElementsinBandCAnnulus.

VerifiedCasingWellBarrierElementsinplace

CasedholeplugsrequiredwithsectionmillinginWB3

Example2Non-verifiableannularcementinBandCannulus.Removaland“RocktoRock”WellBarriersRequired

VerifiedCasingWellBarrierElementsinplace

Extensivesectionmillingorperforateandwashcementingrequired


SurfaceEquipmentRequirementsBaseonDownholeSOR10

Example1§ 1xsqueezedcementplug§ 3xCasedholeplugs§ 7”Casingcuttingandrecovery§ 10-¾”windowmilling(25ft)

RequiredSurfaceEquipmentRiglessorLightInterventionEquipment§ PressureControlEquipment§ AxialHoisting– CasingJack§ WellServicingPump§ WirelinePCEandToolstrings

Example2§ 1x FormationtoFormationPlug§ 2xFormationtoFormationPlugs§ 1xCasedholeplugs§ LowerCompletionPilotMilling§ 7”CasingSectionMilling(70ftwindow)§ 7”CasingSectionUnderreaming(70ftwindow)§ 7”Casingcuttingandrecovery§ 10- ¾” CasingSectionMilling(70ftwindow)§ 10- ¾”CasingSectionUnderreaming(70ftwindow)§ 10-¾”SectionMilling(25ft)

RequiredSurfaceEquipmentWellConstructionDrillingEquipment§ DrillingEquipmentStructureandDrillingSupport

Module


FormationEvaluation11

MudLogging§ EstablishLithologyofHoleSections§ EstablishFluidProperties

Coring§ EstablishLithologyandStratigraphy§ EstablishUndisturbedFluidProperties

Logging§ ExtensiveOpenHoleandCasedHole

optionsavailable

ReservoirTesting§ Transientpressureresponseallowing

measurementofS,PI,Skin,PVTetc.


LoggingWhileDrilling– AzimuthalSonicToolGeosteering | PorePressureEvaluation| StructuralGeologicalEvaluation| 360° AnisotropyBoreholeImaging


IntegratedLogAnalysis– GroundwaterFluidIsolationCasingImagingLog| Multi-sensorCalliperLog| BondLog| UltrasonicRadialScanLog| Noise/&TemperatureLog


IntegratedLogAnalysis– CasingIntegrityCalView Tool- CalliperLog| FluxView Tool- MagneticFluxLog| BondView Tool- BondLog

14


IntegratedLogAnalysis– AnnularCasingCementBondBondView Tool- BondLog| SlimSectorBond– BondLog


CasedHoleLogging16

DataCollectionDuringWorkoverOperationsCasingIntegrity§ Ovality§ PartedConnections§ Burst/CollapsedTubing

Fluids§ PoreandFracturePressurePrediction§ AnnularMudSettlement§ AnnulusCrossflow

CementIntegrity§ Bondtocasingandformation§ Microchannellingandannuli

CASESTUDIESWorkoverwithRe-PerforationandArtificialLiftReservoirAbandonmentSlotRecoveryandInfillDrilling

WELLABANDONMENTANDINTERVENTION


©2017WeatherfordInternationalplc. Allrightsreserved.

WorkoverwithRe-PerforationMidLifeWellStrategyCaseStudy

18


ReservoirRe-Completion19

Challenge§ AbandonexistingreservoirinMatureWell§ WellboreCleanupandconditioningforTCP§ PerforateproductiontargetwithShootandPullTCPstring§ Installnewartificialliftuppercompletion

Constraints§ MatureWellwithIntegritymonitoring§ ConductorIntegrityissueswithopenE-Annulustomarine

environment§ Annularpressurebuildupduringwellshutdownandstart

upthermalcycle


TypicalScopeofWork– ReservoirAbandonment,Re-PerforationandRe-Completion

FacilityIntegrationandInterfacing§ MobilizationofSurfaceEquipment§ EstablishWellBarrierswithPCE

WellAbandonment§ DisplacewelltoKWMandAccessWell§ ThroughtubingPermanentReservoirAbandonment§ RecoverUpperCompletionandPacker

WellboreConditioning§ DisplacewelltoKWM,removeKillStringandAccessWell§ WBCRunsandFluidConditioning

LowerCompletion,FracturingandStimulation§ RunSumpPacker§ LowerZoneShootandPullPerforation§ RunLowerZoneCompletionandSpacerAssembly§ Gravelpackingandacidisation§ Fracturing

UpperCompletion§ RunUpperCompletion

WellCleanUp§ HandWellovertoProductionandSkidtonextWell



ReservoirAbandonmentCessationofProductionCaseStudy

21


WellAbandonment– OperationPhasesPhaseIPrimaryReservoir(s)

PhaseIIIntermediateReservoir(s)

PhaseIIISurfaceAbandonment

22

“Thereservoirhasbeenpermanentlyisolated”

§ Isolationoftheprimaryreservoirperforationstotheenvironment,throughestablishingaverifiedprimarywellbarrier

§ Typicallypumpedcementconveyed“thrutubing”orviacoiledtubing

§ VerificationviaTaggingTOCandpressuretesting

“Allintermediatezoneswithflowpotentialhavebeenisolated”

§ “Withflowpotential”– zoneswithpermeabilityandapressuredifferentialtosurface

§ Evaluationofwhichisakeyaspecttothebasisofthewellabandonmentdesign

§ Typicallycasingcuttingandrecoverytoexposeformationanddeeperannuli

§ FocusedWellAbandonmentUnits

“Wellisabandonedafterremovingthewellheadandconductor”

§ Typicallyinvolvesanenvironmentalwellbarrierbeingplaced

§ MechanicalorAbrasiveseveranceofthewellhead(subsea)orconductor

§ Cutbelowmudline(subsea);– OilandGasUK– “5ft”– NorsokD-010– “Sufficientto

preventconflictwithothermarineactivities”

DefinitionsarepertheOil&GasUK,GuidelinesfortheAbandonmentofWells,Issue5,July2015


ReservoirAbandonmentDesign23

TheBasisofDesignRequires…I. WellConfiguration:

– Depthsandspecificationofformationswhicharesourcesofinflow– Casingstrings– Casingcement– Wellboresandsidetracks

II. Stratigraphicsequenceofeachwellboreshowingreservoir(s)andinformation:

– Currentandfutureproductionpotential– Reservoirfluids– Reservoirpressures(initial,currentandinaneternalperspective)

III. Logs,dataandinformationfromcementingoperations

IV. FormationssuitabletobeusedasWBEs

V. Specificwellconditionssuchasscalebuildup,casingwear,collapsedcasing,fill,H2S,CO2,hydrates,benzeneorsimilarissues


BasisofDesign24

DrillingDataü FormationEvaluationü OpenHoleLogsü CasedHoleLogsü InflowTesting

WorkoverDataü PorePressureLogsü CalliperLogsü CementBondLogü PressureTest

EstablishBasisofAbandonmentDesign

ü PorePressureü CrossflowPotentialü RechargePotentialü WBRatedPressure


PrimaryWellBarrier

SecondaryWellBarrier

SurfaceWellBarrierExampleAbandonmentPrimaryWellBarrierBarriersetinCompetentformationaboveprimaryreservoirwiththefollowingWBEs.Verification – Tagtopofcement,pressuretest.§ BAnnulusCement(Logged)§ 7”ProductionCasing(PressureTested)§ CasedHoleCementPlugsetongastightretainer

SecondaryWellBarrierBarriersetinCompetentformationontothePrimaryWellBarrierwiththefollowingWBEs.Verification – Tagtopofcement,pressuretest.§ BAnnulusCement(Logged)§ 7”ProductionCasing(PressureTested)§ CasedHoleCementPlugsetonGastightretainer§ VerifiedgastightPrimaryWellBarrierbelowSurfaceWellBarrierB&CAnnulusBarriersetonvisco-reactivepillwiththefollowingWBEs.Verification – Tagtopofcement,pressuretest.§ 9-⅝”IntermediateCasing(PressureTested)§ 7”ProductionCasing(PressureTested)§ Multi-AnnuliCasedHoleCementPlugsetonvisco-reactivepill

I. BullheadWellandEstablishWellBarriers andCutUpperCompletion

II. POOHUpperCompletionIII. RIHCBLandLogBAnnulus



SlotRecoveryandInfillDrillingFieldRejuvenationCaseStudy

26


ReservoirRe-EntrySidetrack27

Challenge§ AbandonexistingreservoirinMatureWell§ MillCasingExitandRathole§ Drill6”sidetrackholesectionfrommotherbore for2,000ft,

totargetattichydrocarboninmaturereservoir§ CompleteWellandhandovertowelltesting

Constraints§ LimitedspaceavailableonwellheadplatformforDrilling

EquipmentSetandDrillingSupportModule§ Marginalprospect,thusmustbecashflowpositiveproject

tobesanctioned§ 5wellsperplatformtobesidetracked§ Marinesupportvesselrequired


ReservoirRe-EntrySidetrackPlanning28

DrillingDataü FormationEvaluationü OpenHoleLogsü CasedHoleLogsü InflowTesting

WorkoverDataü PorePressureLogsü CalliperLogsü CementBondLogü PressureTest

WellDesignü OpenBorCAnnulus

forCasingExitü VerifiedWellBarriersü FormationEvaluation

toplanCasingExit


TypicalScopeofWork– 2,000ftGeosteering Sidetrack

FacilityIntegrationandInterfacing§ MobilizationofSurfaceEquipment§ EstablishWellBarrierswithPCE

WellAbandonment§ DisplacewelltoKWMandAccessWell§ RecoverUpperCompletionandPacker§ PermanentReservoirAbandonment

CasingExitandReservoirRe-Entry§ ConditionwellanWBCruntodisplacetoOBMforDrilling§ Whipstock InstallationandMillingOperationstoExitCasing

DrillingandCompletion§ SidetrackdrillingtoTD

‒ BuildandTurnSectionfromRathole‒ DrainSectiontoTD

Completion§ OpenHoleSandScreenLowerCompletionInstallation§ FluidsDisplacementandBreakertoremovemudcakefilter§ HandovertoWellTestingCleanUp

AccessNextWell§ SkidtoWellslotandEstablishWellBarrierswithPCE



SummaryandDiscussions

30


MidLifeOperationsWorkover

CessationofProductionReservoirAbandonment

WellConstructionDrillingPhase

Create:ExplorationDataSeismic,Coring,LoggingReservoirTesting

ProductionDataSampling,Logging

Use:WellConstructionData

PlanOperations:InterventionStimulationWorkoverRe-perforation

Use:WellConstructionDataMidLifeData

PlanOperation:ReservoirAbandonmentInfillSidetrackInfillDrillingNewTargetSidetrackDrilling

»WellConstructionData»MidLifeData

»WellConstructionData »WellConstructionData»MidLifeData»COPData

iadc dec q1 17 - engineering cost out through well design issued · 2020-02-02 · iadc drilling...

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