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1、AdvancesinMicroscopicPoreStructureModellingofRockRuiSongSchoolofGeoscienceandTechnology,SouthwestPetroleumUniversity,Chengdu,China;610500e-mail:songrui0506@126.comJianjunLiuSchoolofCivilEngineeringandArchitecture,StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation(S
2、outhwestPetroleumUniversity),Chengdu,China;610500;e-mail:liujj0906@sina.comABSTRACTDuetotheintricatestructureofporousmedia,themacroscopicpetrophysicaltransportpropertiessuchaspermeability,andfluidsaturationusedforreservoirpredictionarealsoverycomplextoobtain.Thus,furtherunde
3、rstandingoftheinfluenceoftherockstructureonthepetrophysicaltransportpropertiesbecomerelevant.Basedonthemicroscopicimagesofrealrocks,pore-scalemodellinghasbeenusedasaplatformtostudymulti-phaseflowatporescale.Inthispaperdifferenttypesofmicroscopicporemodelsarereviewedandsummar
4、izedintothreetypes:idealporemodels,equivalentporenetworkmodelsandmicroscopicfiniteelement/volume(FEM/FVM)gridsmodels.Thentheresearchstatusofrockpore-scalemodellingissummarizedandtheadvantagesanddisadvantagesofthesemodelsareanalysed.Withtheexampleofapplicationinpetroleumindus
5、try,theexistingproblemsanddevelopmentdirectionsareindicated.KEYWORDS:Rock;PorousMedia;MicroscopicPoreStructureModelling;IdealPoreModels;EquivalentPoreNetworkModels;FEM/FVMGridsModelsINTRODUCTIONPorestructureofrockreferstotheshape,size,distributionandconnectivityofporesandthr
6、oatsintheporousrock.Duetotheintricatestructureofporousmedia,themacroscopicpetrophysicaltransportpropertiessuchaspermeability,andsaturationusedforreservoirpredictionarealsoverycomplextoobtain.Thus,furtherunderstandingoftheinfluenceoftherockstructureonthepetrophysicaltransport
7、propertiesbecomerelevant.Itispossibletoacquirethemicroscopicporestructureintheporousrockbytraditionalexperiments.Forexample,thescanningelectronmicroscope(SEM)andcomputedtomography(CT)areusuallyusedtoacquiretheseinformationingeotechnicalandwaterconservancyindustry[1-2].And,co
8、nventionalexperimentsonmercurypenetrationhavebeenwidelyusedinpetroleumindus