ChronoSeisQuick_Guide

ChronoSeis®5.5QuickGuide1Contents1Introduction____________________________________________________31.1RokDoc-ChronoSeis®Introduction_______________________________31.2ChronoSeis®new5.5Features:__________________________________41.3ChronoSeis®Features:_________________________________________51.4TheChronoSeisQuickGuides___________________________________81.5TheChronoSeis®ContextSensitiveHelp___________________________92ChronoSeisKeyFeatureExplanations_____________________________112.1ChronoSeisMainWindowFeatures(includinga3Dview)_____________112.2TheChronoSeisPropertyModelDescription_______________________122.3RockPhysicsModels_________________________________________132.4TheChronoSeis2DDisplay____________________________________152.5TheChronoSeisCalculator_____________________________________16Workflow1–StartinganewChronoSeis®Project_______________________17ImportingWellData______________________________________________19ImportingSeismicData___________________________________________25QualityControllingtheimportedSeismicData________________________30Workflow2–DefiningaSimpleModelinChronoSeis®___________________33Workflow3–PerformingsimpletaskswithaChronoSeis®model._________41ReviewtheDemonstrationModel_____________________________________41ModelViews:VisualisingtheModel___________________________________48WellPlanning/Forecasting_________________________________________53Volumetrics______________________________________________________55Createa3DPropertyfromaSetofTrendMaps_________________________57SimulatorModel__________________________________________________59Workflow4-FaciesModelling_______________________________________63Workflow5–AChronoSeis®ProjectwithTimeSurfacesandSeismicData._77Workflow6–ModellingwithSeismicdatainChronoSeis®________________82Workflow7–Creatinga4DModelinChronoSeis®______________________88Workflow8–4DSyntheticSeismicfromanIntegratedReservoirModel____96Workflow9–EstimatingFluidMovementsfrom4Dseismicanomaliesinthe3Dgeologicalmodel._________________________________________________104Workflow10–ColouredInversion___________________________________110WorkFlow11-CreatingandUsingPseudo-wells_______________________120WorkFlow12-FaultCompartmentsinVolumetrics_____________________1262ChronoSeis®5.5QuickGuideWorkflow13-DrapingAttributesoverStructure_______________________130Workflow14-StochasticInversion__________________________________132MultipleRealizationsonaFence___________________________________1353DStochasticInversion__________________________________________136PostProcessingofMultipleStochasticInversionProperties___________137Workflow15–RockPhysicsModels_________________________________1393Support______________________________________________________143ChronoSeis®5.5QuickGuide31Introduction1.1RokDoc-ChronoSeis®IntroductionChronoSeis®isa3D/4Dreservoirmodellingandcharacterizationtoolintegratinggeophysics,geologyandreservoirengineeringandclosingthelooparoundthesubsurfacedisciplines.Withitsrangeof4Dseismicreservoirmonitoringtoolsandseismicinversionalgorithmsithasunparalleledfunctionalityandversatility.ChronoSeis’uniqueapproachtobuildingmodelsontheflyfromarecipemeansthatitisfast,flexibleandeasytoupdate;whateverthequestion,yougetanswerstoday,makingitidealforcomparingoptionsandscenariosaspartofareservoirmodellingandsimulationstudy.TheReservoirMonitoringModuleperforms4Dsyntheticseismicmodellingfromreservoirsimulationresultswithina3Dgeologicalmodel.ThisModulealsopredictssaturationandpressurechangesfromtime-lapseseismicandproductiondatainthegeologicalmodelframework.Predictionsarevalidatedwith4Dseismicmodelling.The4Dmodelscontainstructure,chronostratigraphy,rockproperties,date-varyingseismicpropertiesanddate-varyingfluidsaturationandpressurepropertieswhichcanbeuser-definedorderiveddirectlyfromaflowsimulationruns.Themodelscanberealisedon-the-flyforanypropertyatanydateandarepresentedascross-sections,slicesorexportedascubes.ChronoSeiscalculatesdate-dependentvolumetricsandproducesdetailedwellforecastsDate-dependentsaturationsandpressuresarealsoconstructedwithNeuralNetworktechnologyandusemultipletime-lapseacousticandelasticseismicattributes,deterministicorstochasticstaticreservoirproperties(porosity,perm,etc.)andfielddatasuchastime-lapselogs,water-cutand/orpressuredata.AnEEIanalysistoolintheReservoirMonitoringoptionidentifiesanExtendedElasticImpedanceattributewhichwillrespondmostsensitivelytochangesofsaturationsandpressureduringfieldlife.SpectralinversioninChronoSeis®isanIkonScienceproprietarymethodforinvertingseismicdata;itisparticularlygoodatdelineatingdepositionalgeometry.Thisinversiontechniqueisafrequency-domainprocesswhichbreaksdowntheseismictraceintomanyfrequencybandsandthenconstructsanearthmodeltracewithaspectrumbalancedtomatchthelocalearthimpedancespectrum.Theearthimpedancespectrumisdeterminedfromwelllogsandmaybespatially-variantoraglobalmean.Thetechniquecanalsobeappliedwithoutanywells,inwhichcaseatypicalearthspectrumisassumed.ThenewhighresolutioninteractiveJointAVOStochasticinversionmodulea