基于反饋環(huán)的多次波壓制方法研究.pdf

1、中國石油大學（華東）碩士學位論文基于反饋環(huán)的多次波壓制方法研究姓名：周振曉申請學位級別：碩士專業(yè)：地球探測與信息技術(shù)指導教師：張軍華20080501MultipleEliminationResearchBasedonFeedbackMethodZhoUZhen—xiao(GeophysicalExplorationandInformationTechnology)DirectedbyProfessorZhangJunhuaAbstrac

2、tMultipleeliminationisalwaysallimportantworkinseismicdataprocessingMultiplereducestheresolutionofseismicdatadisturbstherecognitionofprimaryanddamagesthequalityofseismicdataprocessingseriouslySoitissignificantthathowtoeli

3、minationallkindsofmultipleseffectivelyandreservetheprimarypossiblyinseismicexplorationTheeliminationofmultiplebasedonwaveequationconsidernotonlythekinematicscharacteristicofwavepropagationbutdynamiccharacteristic，andalso

4、avoidsomeshortageswhenweusesomefilteringmethodsWebelievethattheeliminationofmultiplebasedonwaveequationwillhaveabrightfuture，becauseitdoesn’tneedanyprioriinformationandhaveabetterresultFirst，thisthesissystemicallydiscuss

5、esallkindsofmethodsaboutmultipleelimination，includingfilteringmethodsandwaveequation—basedmethodsThenIstudythebasictheoryandproceduresofpredictionsubtractionmethodbasedonwaveequationIdiscussthepredictionandsubtractiondet

6、ailedlyBasedontheanalysisoftraditionalSRMEmethod，iachievethesingleensembleSRMEmethodThismethodreducetherequestofcomputer’shardware，andincreasethecomputationspeedIstudysomedetailissuesabouttheextrapolationofnearoffsetwave

7、field，theaffectionofinversesourcewaveletandmultipleencodingschemeAsapartofpredictionsubtractionmethod，thispaperdiscussesadaptsubtractionalgorithmdeeply，makedetailedtheoreticalderivationofsinglechannelleastsquarematchingf

8、iltermethodandconstrainedcross—equalizationexpandedmultichannelmatchingfiltermethod，andcomparethesetwomethodswithmodelsEstablishtherelationbetweentheeffectivenessofSRMEandtheiterativetimesandlengthoftimewindowwhichisused

9、forqualitycontrolofmultipleeliminationThen，Isummarizeandcomparetheseveralcommercialseismicprocessingsoftware，anddevelopasoftwarefocusedonmultipleeliminationIapplythesoftwaretothesyntheticalmodelandrealseismicdata，andgeta