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NAPS-2018-20
AUTHORS:AvramiGrader,NaumDehrzi,IngrainaHalliburtonServiceBrendenGrove,JacobMcGregor,DougManning,JohnSmith,RoryDehart,HalliburtonJetResearchCenter
PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsand
Characterization
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Outline
§ Researchprogramoverview§ Statusandinterimresults§ Conclusions&futurework
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
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§ 2mainthreads§ Perforationdamagecharacterization§ Cleanup&flowperformance
§ Approach§ IntegrateIngrain’sdiagnosticandanalysis
capabilitieswithAdvancedPerforatingFlowLaboratoryactivities
§ Workflow§ Perforatecoreatprescribedconditions§ CTscanonsite– inflowlaboratory§ FurtherCTscanning,micro-CT,analysis– at
maincampus
ResearchProgramOverview
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
Endgame(s)
§ Perfdamage– natureandmechanisms§ Mechanisticcleanupmodels§ Differentrocks(“perfdamage”inshale?)§ Simulateperforationinflow(ultimately3D,accounting
forpermheterogeniety &anisotropy)§ BetterinterpretSectionIVresults;applytodownhole
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Status
§ Initialfocus– perfdamage(noflow)§ Severalcoreshavebeenperforatedforthiseffort
§ Sandstones,carbonates;rangeofstrength,porosity,permeability§ Varyinglevelsofcleanup(viaDUB)
§ Preliminaryanalysisconductedon2cores1. Bereasandstone– nocleanup(crushedzonepreserved,tunnelfilledwithlinerdebris)2. CrabOrchardsandstone– “full”cleanup(tunnelsubstantiallyempty,withsomesmallcrushed
zoneremaining)
§ Interimresults– followingslides
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
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InterimResults– Berea
Perforate Full-corescanofperforation Overcore to4” Re-scan;higher
resNextslide
Core=BereaSandstone
Dim
(in) Length 24
Diameter 7
Prop
ertie
s UCS(psi) 6,294
Porosity 21.0%
Saturation OMS
Test
pressures
(psi)
Overburden 15,100
Pore 10,000
Wellbore 15,000
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
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InterimResults– Berea
Overcore to2-1/4” 4mm“pillar”,orthogonaltoperf Micro-CT
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
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InterimResults– Berea
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
f =10.5%
f =21.5%
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InterimResults– Berea
A B
B
A
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
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InterimResults– CrabOrchard
Perforate Full-corescanofperforation
Overcore to2-1/4”
Re-scan
Nextslide
Core=CrabOrchardSandstone
Dim
(in) Length 18
Diameter 7
Prop
ertie
s UCS(psi) 22,474
Porosity 10.7%
Saturation OMS
Test
pressures
(psi)
Overburden 21,500
Pore 20,000
Wellbore 11,500
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
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InterimResults– CrabOrchard
7”core 2-1/4”core 7”core 2-1/4”core
TunnelEntrance TunnelTip
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
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InterimResults– CrabOrchard
Hi-resscanof2-1/4”dia disk,focusingonregionnearperforationtunnel
Tunneldia
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
Interface
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InterimResults– CrabOrchard
4mm“pillar”,orthogonaltoperf Micro-CT
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
Interface– thindamagedzoneremaining
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InterimResults– CrabOrchardFirstlookatporosity
§ Crushedzone• Mostlyremoved,thoughthinlayerremains(tc <1mm)• Porosityappearsreduced(aswithBereacore)• Connectedporositysignificantlyreduced(implieskc/k<<1)
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
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InterimResults– CrabOrchardFirstlookatporosity
§ Crushedzone• Mostlyremoved,thoughthinlayerremains(tc <1mm)• Porosityappearsreduced(aswithBereacore)• Connectedporositysignificantlyreduced(implieskc/k<<1)
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
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Summary,Conclusions
NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization
§ Summary§ Researchprogramunderway;interimresultspresented§ 2perforatedcoreshavebeenanalyzedwithhigh-resolutionCTtechniques§ Crushedzonescharacterized
§ Conclusions§ Integratedworkflowvalidated/confirmed§ Abilitytocontrolparametersthatdictatecleanuplevel§ Abilitytoresolveverysmallfeatures(CZ<1mmrem;porestructure)
§ FutureWork§ Furtheranalysisofthesecores§ Additionalcores(differentrocks– tightsandstones,carbonates,shales)§ Varyinglevelsofcleanup§ Quantifyperms§ Simulateflow;interpretSection4
,andFutureWork
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NAPS-2018-20
AUTHORS:AvramiGrader,NaumDehrzi,IngrainaHalliburtonServiceBrendenGrove,JacobMcGregor,DougManning,JohnSmith,RoryDehart,HalliburtonJetResearchCenter
QUESTIONS?THANKYOU