Petrel地质建模手册2

SyntheticSeismogramObjectives•MakeWellSection•Qualitycheckandeditlogs•CreateanEstimatedlog•ImportCheckshots•CorrectsoniclogandestablishTime-Depthrelation•MakeAcousticImpedancelogandReflectionCoefficientSeries•GenerateSyntheticandExtractedWavelets•ProduceSyntheticSeismogram•Compareseismogramwithrealwellseismic•Manualadjustmentandeventpicking•Displayofsynthetictracein3DwindowMakewellsection1.SelectNewwellsectionwindowfromtheWindowmenu2.ExpandtheWellsfolderandselecttheappropriatewells124.ColorfilllogsbyusingtheCreate/editcurvefilltool33.ExpandtheGlobalwelllogsfolderandselecttheavailablelogstouse4Processoverview1.Selectwells12.Soniccorrection3.Time/Depthlookup4.AIlogandRCseries5.GenerateWavelet6.SyntheticSeismogram7.CorrelateSeismic234567LoginputandQC1.InputdatatoSynthetics;Logs:Sonic[s/ft]Density[gr/cm3]Checkshots(CS):CheckShotSurvey(or)VSPAdditionallogs(optional):GR[API]Caliper[Holediameter]Anyother12GRSonicDensityCaliperCS2.BadlogsmustbeeditedEstimatelogsifmissingSplicelogintervalsManualeditingLogediting1.FromGlobalwelllogsRightclickonDTandselectCalculator12GRSonic542.MakeexpressionSonic_despiked=DT3.Usesonicastemplate4.SampleMDfromlogandselectDTasinput5.ClickEnter3Logediting-Despike123452.ChangeAction#1toDespike3.Usedefaultparameters4.Runandviewtheresultinwellsection5.Undoandadjustparametersifnotsatisfied1.FromGlobalwelllogsRightclickonSonic_despikedandselectLogeditorSonicDespikedLogestimation–Makedensityfromsonic123452.ClickonUseexisting,selectGlobalWellLogfromthelist3.SetAction#1toDensityfromSonic4.SelectInputLog5.Applydefaultparameters1.RightclickonthewellwhereanestimatedlogshouldbegeneratedSonicEst.density1.DoubleclickontheSyntheticsprocessunderStratigraphicmodelingProcessdiagram22.Movethemouseovereachofthedifferenticonstoseehintsonhowtousethem1OpenssettingspagefortheobjectCreateanewobjectOpensthespreadsheetfortheobject3.Selectwellstoworkwithandawellsectiontodisplayanyresultsin31.SelectasinglewellortheWellsfoldertoworkwithfromthedropdownmenuWellselection22.WorkingwithonewellonlydeactivatestheWellstabselection3.ClickingNoneintheWellstab,activatestheseparatewellselectionlist31Loadcheckshots12343.MakesureFilesoftypeiscorrect1.RightclickonWellsfolderanduseImport(onselection)…2.Selectfile(s)toimport4.AccessthefilesbyclickingOpenLoadcheckshots123B5.Rightclickoncheckshotstoopenthespreadsheet1.Fitinputparameters(A)tofile(B)A5462.Connecttowelltrace3.Correctdata(ifneeded)4.OK(onefile)orOKForAll(twoormorefilesifinsameformat)6.ChangedepthfromMDtoTVD.CompareTVDandTWTwithinputfile(s)andothertime/depthinformationSoniccorrection1.DotheSoniccorrectionbasedonoriginalsonicandcheckshotsDepthTimeCheckShotSurveySonicLogT.D.R.2.Usethegeneratedcorrectedsonicasinputintheprocess12Welltime/depthrelation121.WellTDRisdefinedbygeneratingglobaltimelog(s)5.ClickonSharedcheckshots,selectanddropinasourcewellfromtheWellfilterofacheckshotsitem.Execute3542.OpenSettingsforGlobaltime.3.Rearrangetheprioritylistusingtheblueup/downarrows.Mark(greentick)objectstoselectfrom4.ClickonExecutetogeneratetheglobaltimelog21.IntheSeismogramtab,clickonCreatesyntheticseismogramAcousticimpedanceandReflectioncoefficientseries62.SelectDensitytouse3.ClickoncreatenewobjecticontogenerateanAcousticimpedancelog.Settingsopensforselection4.Selectdensityandsoniclogonput5.FromtheAcousticimpedancepulldownmenu,selectthenewlycreatedlog6.ClickontheCreatenewobjecticonforReflectionCoefficients.SelectAIlogforinputandusethenewlogasinputforRC123542.SelectSynthetictypeofseismogramSyntheticwavelet2WaveletshapePhaseAmplitudeRickerOrmsbyKlauderButterworth4331.CreatenewobjectforWavelet.OpenSettingsforit3.SelectwhichSyntheticwavelettouse4.SetparametersdependentontheselectedSynthetic1Extractedwavelet1WaveletshapePhaseAmplitude3a42BartlettPapoulisHammingCosineHanning45.Alternativetypeofseismogramisloadedfromfile5763b1.SelectExtractedtypeofseismogram3.a)SetNeighborhoodextentfor3Dseismicb)If2Dlinesareused,setnumberoftraces2.FromInputpane,selectseismicdataandWell.Dropbothinothedialogboxusingthedropinarrows4.SelectTaperwindowtype6.ImportthefileintheInputpaneandopenitinthedialogbox7.SetTimeunit1.ClickontheSyntheticseismogrampulldownmenutoviewitscontentSyntheticseismogram21Signal:S=R*Wavelet*=2.ReflectioncoefficientsandwaveletisinputwhenApplyorOKisclicked3.a)Selectwhichextractionmethodtouse,RadialorOrbital(3D)b)Setnumberoftracestousealongseismicline(2D)Wellseismicextraction143a3b2.Fromtheinputpane,clickontheseismicdataobjectanddropitinusingthedropinarrow1.IntheWellseismictab,checktheCreatewellseismicbox4.Setappropiateparametersformethodchosen.21.Aftergenerationofthesyntheticseismogram,openSettingsfromtheShyntheticsprocessdialogbox2.OpenSyntheticseismogramtabandsetNumberoftracesto3.SetPeakfrequencyActiontoSequenceandtypein20–25–30.Applyandviewtheresultinthewellsection3.Openthe2DStyletabandselectShowwiggles.FillinthepreferredparametersSyntheticseismogramsettings1321.FromtheInputpane,rightclickontheSyntheticsfolderandselectspreadsheet2.FilteronasinglewellandsettheDomaintoworkin(e.g.TWT)3.Spec