简介：Thecommon-reflection-surface(CRS)stackingisanewseismicimagingmethod,whichonlydependsonseismicthreeparametersandnear-surfacevelocityinsteadofmacro-velocitymodel.AccordingtooptimizedthreeparametersobtainedbyCRSstacking,wederivedananalyticalrelationshipbetweenthreeparametersandmigrationvelocityfield,andputforwardCRSgathermigrationvelocitymodelingmethod,whichrealizevelocityestimationbyoptimizingthreeparametersinCRSgather.Thetestofasagmodelprovedthatthismethodismoreeffectiveandadaptableforvelocitymodelingofacomplexgeologicalbody,andtheaccuracyofvelocityanalysisdependsontheprecisionofoptimizedthreeparameters.
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