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OBC资料表面多次波问题非常严重.目前对OBC资料表面多次波的衰减方法是先将陆检资料与水检资料进行融合,然后使用拖缆数据表面多次波压制技术.本文开发了上下波场反褶积方法,通过陆检数据与水检数据在极性上的差异,将地震数据分解为上下行波场,然后将上行波场与下行波场进行反褶积运算,达到压制表面多次波的效果.该方法完全数据驱动,具有操作快捷,计算效率高等优点.通过理论模型与实际资料对该方法进行验证,取得了满意的多次波压制效果.
OBC data surface multiple wave problem is very serious.At present OBC data surface attenuation of multiple waves is the first combination of ground inspection data and water sampling data, and then use the surface data of the streamer data suppression technology.In this paper, The wave field deconvolution method decomposes the seismic data into upper and lower wavefields based on the differences in polarities between the groundwater survey data and the watermark data, then deconvolutes the upwelling wavefields and the downwelling wavefields to reach the pressed surface The method is completely data driven and has the advantages of quick operation and high computational efficiency, and the method is verified by the theoretical model and the actual data, and the satisfactory multiple suppression effect is achieved.