断块油气田2023年5月IdentificationmethodofsequenceboundarybasedonINPEFAandwavelettransform:acasestudyofMioceneZhujiangtoHanjiangFormationinZhu-3DepressionLYUWei1，2,DONGYanlei1，2,GEJiawang3,SUNLianpu4,XIEXiangdong5,JIATianpeng1，2,ZHENGSaifei1，2,LIYuanliang6(1.StateKeyLaboratoryofPetroleumResourcesandProspecting,ChinaUniversityofPetroleum,Beijing102249,China;2.CollegeofGeosciences,ChinaUniversityofPetroleum,Beijing102249,China;3.CollegeofGeosciencesandTechnology,SouthwestPetroleumUniversity,Chengdu610500,China;4.SinoGeotech(Beijing)Co.,Ltd.,Beijing100015,China;5.GudaoOilProductionPlant,ShengliOilfieldCompany,SINOPEC,Dongying257231,China;6.ExplorationandDevelopmentResearchInstitute,ZhongyuanOilfieldCompany,SINOPEC,Puyang457001,China)Abstract:TheexplorationdegreeofZhu-3DepressioninthePearlRiverMouthBasinisrelativelylow,sotheestablishmentofsequencestratigraphicframeworkisimportantforoil-gasexploration.Inthispaper,integratedpredictionerrorfilteranalysis（INPEFA)technologyandwavelettransformtechnologybasedonloggingcurveareusedtoidentifysequenceboundaryofeachorderandmaximumfloodingsurface（MFS）.TheINPEFAcurvewasobtainedbythemaximumentropyspectrumanalysistechnologyofGRcurve.ThetrendandinflectionpointsintheINPEFAcurvewereusedtoextractthehiddenperiodicfeaturesintheGRcurve,andthenthesequenceboundariesofdifferentordersweredivided.Meanwhile,theGRcurvewasreconstructedbywavelettransformtechnology,andthereconstructedwaveletcoefficientcurveandthetime-frequencychromatogramwereanalyzed.Thethird-ordersequenceboundaryandtheMFSareidentifiedbytheanomalousvibrationofthecurveandtheenergychangeofthespectrogram.Theresultsshowthatthreesecond-ordersequenceboundariesandsixthird-ordersequenceboundariesareidentifiedfromMioceneZhujiangFormationtoHanjiangFormationinZhu-3Depression,whicharedividedintotwosecond-ordersequencesandeightthird-ordersequences.The收稿日期：2022-11-23；改回日期：2023-03-10。第一作者：闾伟，男，1997年生，在读硕士研究生，主要从事层序地层学和地震沉积学方面的研究。E-mail：l...
