角度域保幅的最小二乘高斯束偏移成像

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中图分类号：P631.4 文献标志码：A

Abstract：This paper proposes aleast-squares Gausian beam migration method based on the extraction of angle-domain commonimage gatherstoovercomethelimitations oftraditional seismic imaging techniques inexploring deepandcomplex hydrocarbonreservoirs.The method leverages theangle informationcarred bythe Gausian beam propagator to separate imaging contributionsatdiferentreflectionangles.Byintegrating iterativeleast-squaresoptimization，itachieveshighresolutionand amplitude-preserving imaging results.Inaddition，theconceptof principal-axiscontinuation is introduced to enhancetheamplitudeof shalowreflection eventsand compensate for missing signals inthe midleanddeep layers，furtherimproving overallamplitudefidelityinthestackedsetion.Modelexperimentsverifythefectivenessoftheproposedapproach，demonstrating its superiorabilitytodelineatecomplex geologicalstructures，suppressimaging noise，and enhance amplitudepreservation compared with conventional Gaussian beam migration.

Keywords;seismic exploration；gaussian beam migration；least-squaresmethod；angle-domain imaging；amplitude-preservingimaging technique

随着油气勘探开发的深入，目标从浅层大尺度简单构造油气藏逐渐转向深层中小尺度复杂岩性油气藏[1-2]。（剩余15188字）