地震波逆时偏移数据规则化技术分析

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1、万方数据地震波逆吐偏整数据规则化拄苤班盈ResearchontheTechnoIogyofReguIarizationofSeiSBIicWaveReverse-timeMigrationDataAbstractSeismicexplorationincludesthreeaspects，thefielddataacquisition，dataprocessingandinterpretationofseismicdata．Thequalityofthefielddataacquisitiondecideswhetherthenext

2、twostepscanbeexecutedaccuratelyornot．Theprocessoffielddataacquisitionisasfollows：inthepreliminarydeterminationoftheoilandgasdistributionlinetargetarea，artificialseismicwaveexcitation，andfieldseismicinstrumentreceiveseismicsignal．Butthefollowingthreeaspectsinfluencecolle

3、ctionofregularizationdata．Firstofall，duetohumanandfinancialconstraints，onlycarryonsparsesampling；secondly，thedistributionofsurveylineisinfluencedbygeographicalfactors，whicharenotstrictlyregularsampling；inaddition，duetotheunavoidablenoise，resultinginsomelowqualityseismic

4、dataneedtobeabandoned．Itwouldencryptspatialsamplingrate，improvetheSNR，eliminatethespatialaliasingcausedbynonregularsampling，andshortentheproductioncycle，savingmanpowerandmaterialresourcesbyruleprocessingseismicdatafrompracticalexploration．seismicsectionfromreversetimemi

5、grationimagingafterseismicdataaftertheruleprocessingbycanreflecttheactualundergroundgeologicalstructurebitterly．Therefore，regularizationofseismicdataprocessingcanprovideeffectivehelpforoilandgasexploration，hasanimportantsignificanceforactualproduction．Accordingtotheappl

6、icationmigrationimagingtechniquebeforeorafterthehorizontalstackingseismicmigration，itcanbedividedintoprestackmigrationandpoststackmigration．Prestackmigrationhasmoreadvantagesthanpoststackmigration：goodimageoncomplextectonicfracture，avoidtheNMOcorrectionstackgeneratederr

7、ormessage，prestackcommonreflectionpointgatherscanbeusedforAVOandprestackinversion，andobtaintheRMSvelocityaccurately．Thispaperuseprestackreversetimemigrationtoimagethedataafterruleprocessing．万方数据地震波逆盟偏整数据规则化拉苤翌f冠一一Firstofall，thispaperanalyzesthetypesofdatasneededtherulep

8、rocessing，oneisthedatawhichislackofsometraces，theotherisregularsamplingdataneedsequidistantinterpolation．Thisp