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基于套变数据的盐岩地层非均匀地应力反演.docx

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基于套变数据的盐岩地层非均匀地应力反演 Title:Non-uniformStressInversionofSaltRockFormationBasedonSeismicDataAnalysis Abstract: Theaccuratedeterminationofstressdistributioninsaltrockformationsisofgreatimportanceforvariousgeologicalandengineeringapplications.Inthispaper,weproposeamethodologyforthenon-uniformstressinversionofsaltrockformationsusingseismicdataanalysis.Thestudyfocusesontheunderstandingofthecomplexnatureofsaltstructuresandtheirimpactonstressdistribution.Theproposedmethodaimstoprovideabetterunderstandingofthesubsurfacestressdistributioninsaltrockformations,whichcancontributetothesafetyandefficiencyofoilandgasextraction,undergroundstorage,andgeotechnicalengineeringprojects. 1.Introduction Saltrockformationsareknownfortheircomplexanduniquemechanicalbehaviorduetotheirviscoelasticandductilenature.Understandingthestressdistributioninsaltrockformationsiscrucialforsuccessfulexplorationandexploitationactivities.Themainchallengeinthiscontextliesinthenon-uniformnatureofstressdistributionduetothepresenceofsaltstructuressuchassaltdomes,diapirs,andsaltwalls.Thispaperexplorestheutilizationofseismicdataanalysismethodstoobtainanon-uniformstressdistributioninsaltrockformations. 2.Methodology 2.1SeismicDataAcquisition Seismicdataacquisitionisthefirststepintheproposedmethodology.High-qualityseismicdataareessentialforaccuratestressinversion.Seismicsurveysshouldbedesignedtocollectdatawithhighresolutionandsuitablecoveragenecessarytocapturethecomplexitiesofsaltstructures. 2.2VelocityAnalysisandConversion VelocityanalysisandconversionareperformedtoestimatetheP-waveandS-wavevelocities,whichareessentialparametersforstressestimation.Variousvelocityanalysistechniques,suchassemblanceanalysisandFullWaveformInversion(FWI),canbeemployedtoimprovetheaccuracyofvelocityestimation. 2.3SaltStructureImaging Saltstructureimaginginvolvestheidentificationandcharacterizationofsaltstructuresusingseismicdata.Techniqueslikepre-stackdepthmigrationandtomographycanbeutilizedtogeneratehigh-resolutionimagesofsaltstructures,a