perforation damage, cleanup, and inflow performance ... · naps-2018-20 / perforation damage,...

NAPS-2018-20

AUTHORS:AvramiGrader,NaumDehrzi,IngrainaHalliburtonServiceBrendenGrove,JacobMcGregor,DougManning,JohnSmith,RoryDehart,HalliburtonJetResearchCenter

PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsand

Characterization

Outline

§ Researchprogramoverview§ Statusandinterimresults§ Conclusions&futurework

NAPS-2018-20/PerforationDamage,Cleanup,andInflowPerformance:AdvancesinDiagnosticsandCharacterization

§ 2mainthreads§ Perforationdamagecharacterization§ Cleanup&flowperformance

§ Approach§ IntegrateIngrain’sdiagnosticandanalysis

capabilitieswithAdvancedPerforatingFlowLaboratoryactivities

§ Workflow§ Perforatecoreatprescribedconditions§ CTscanonsite– inflowlaboratory§ FurtherCTscanning,micro-CT,analysis– at

maincampus

ResearchProgramOverview


Endgame(s)

§ Perfdamage– natureandmechanisms§ Mechanisticcleanupmodels§ Differentrocks(“perfdamage”inshale?)§ Simulateperforationinflow(ultimately3D,accounting

forpermheterogeniety &anisotropy)§ BetterinterpretSectionIVresults;applytodownhole

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


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



Overcore to2-1/4” 4mm“pillar”,orthogonaltoperf Micro-CT




f =10.5%

f =21.5%


A B

B

A


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



7”core 2-1/4”core 7”core 2-1/4”core

TunnelEntrance TunnelTip



Hi-resscanof2-1/4”dia disk,focusingonregionnearperforationtunnel

Tunneldia


Interface


4mm“pillar”,orthogonaltoperf Micro-CT


Interface– thindamagedzoneremaining

InterimResults– CrabOrchardFirstlookatporosity

§ Crushedzone• Mostlyremoved,thoughthinlayerremains(tc <1mm)• Porosityappearsreduced(aswithBereacore)• Connectedporositysignificantlyreduced(implieskc/k<<1)


Summary,Conclusions


§ 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

NAPS-2018-20

AUTHORS:AvramiGrader,NaumDehrzi,IngrainaHalliburtonServiceBrendenGrove,JacobMcGregor,DougManning,JohnSmith,RoryDehart,HalliburtonJetResearchCenter

QUESTIONS?THANKYOU

perforation damage, cleanup, and inflow performance ... · naps-2018-20 / perforation damage,...

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