Petrel下裂缝建模的操作流程

更多Petrel资料及实战操作视频，请访问博客：http://iwith.meFractureModelinginPetrelPetrelisdesignedtobeflexible,givingyouthepowertouseanyavailabledata.Typically,togenerateagoodDFN,theIntensityin3Disrepresentedbyapropertygeneratedfromone/severalfracturedrivers.ManyofthesedriverscaneasilybegeneratedinPetrel:Lithological/Faciesdrivers-CanbegeneratedusingFaciesmodeling/Geobodies/PropertyCalculatororGeometricalmodeling.Seismicdrivers-CanbegeneratedfromtheextensiveseismicattributelibrarypresentinPetrel,thenresampledinasapropertyinthe3Dgrid.Mechanicaldrivers-CanbedefinedbySegment/ZonepropertiesorDistancetoobjectsinGeometricalmodeling.InadditiontherearecurvaturegenerationpossibilitiesfromtheOperationstabofsurfaces,seeCurvatureoperations.ParenttopiF:acturemodelingFractureModelingWorkflowBelowisacommonworkflowsequence,whichprovidesthenoviceuserwithaneasyguidethroughthestepsofgeneratingausefulfracturemodel.Fortheexperienceduser,thePetrelfractureworkflowisopen,providingversatilityforspecializedandcustomizedworkflows.Howtosetupastandardfracturemodelworkflow(example)Step1:Import,QCanddisplayfractureinterpretationfromwells;couldbedipandazimuthinterpretationfromImagelogdata.Ausefulimportformatis'Pointwelldata(ASCII)';whereeachattributedescribesafracturetypeandquality.Createtadpolestoshowdip/azimuthdata.UseStereonettovisualizethefracturedata.Step2:DataAnalysisCreatenewpointattributesusingCalculatorforrotationofdiprelativetostratigraphicsurfaceAssignfracturesetsusingselectiontoolsinStereonet

GenerateFractureIntensitylogs口KMH1ITST1Step3:AIodeliDgFracfareueEorkproper旋sUpscaleIntensitylogsandmodelIntensitypropertiesperfracturesetCreatefracturedriverproperties;canbeusedassecondarypropertiesinco-krigingoftheIntensitymodelDipqualityStep4:CreateDiscreteFractureNehvork(DFN)StochasticgenerationbysetsusingIntensitypropertyasinputDeterministicgenerationoffracturesusingfaultpatchesfromant-tracking,faultsurfaces,pointsorpolygonsGeneratefractureattributes(apertureandpermeability)

Step5:UpscaleDFXtopropertiesUpscalefracturenetworkproperties(useStatisticalorFlowbasedmethod)TheupscalingshouldbedoneontoaSimulationgrid(withlesscellsthantheGeogrid)ThiswillcreatepropertyoutputswhichcanbeusedinaSimulationrun液Scaleupfracturenetworkproperties|XScRunGrid:Discretefracturenetwork:(3FracGrid(Depth)#InitialFracturenetwork(w/Sets]I，；.；EditexistingpropertiesUpscaledproperty:.(£：.CreatenewpropertiesPropertyprefix：Upscaling0Upscaleporositv0UpscalesigmafactorGrid:Discretefracturenetwork:(3FracGrid(Depth)#InitialFracturenetwork(w/Sets]I，；.；EditexistingpropertiesUpscaledproperty:.(£：.CreatenewpropertiesPropertyprefix：Upscaling0Upscaleporositv0Upscalesigmafactor0Upscalepermeability■Odamethod•(.；Flowbased覆Fracture_porosityFractureFractureporosityFracturesigmaFractureKiFractureKjFractureKkBoundaryconditions:0Fulltensor Fracture_KijFractureKikFractureKjkApply OKKCancel:SimuhtiouSetupaSimulationrun.UseMatrixproperties(standardproperties)andfractureproperties(fromupscalingprocess)inDualporositysimulation

Consistencybetweenmatrixandfracturecellsindualporosity/permeabilitymodelsECLIPSE&FrontSimrequirethatcorrespondingmatrixandfracturecellsindualporosityordualpermeabilitymodelsarebotheitheractiveorinactive.Whenyouupscalepropertiesfromadiscretefracturenetwork(DFN)somefracturecellsarelikelytohaveveryloworzeroporosity,resultingininactivefracturecells,evenifthecorrespondingmatrixcellsareactive.Thiswillresultinwarningorerromessagesfromthesimulator.Toremedythis,youcanusethe3DpropertycalculatortocreateanACTNUMproperty,forexample:ACTNUM=IF(PorosityFracture<0.01ORPorosityMatrix<0.01,0,1)Youcanvarytheporositythresholdusedasrequired.Assignthis