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水层多次波和层间多次波干扰是在海上地震数据处理中的常见问题。当介质是横向变化较弱的地区和中等硬度的海底反射时,这些反射可以通过预测反褶积来压制;然而当海底非常坚硬且不规则时,海底构造与一维地球模型的不一致会使传统的去噪方法失效。频率慢度域二阶算子(Remul方法)是以地震正演数据模型为基础,推导了在线性拉东变换(T—p域)中的多次波压制因子。由于它是基于反射数据的模型,既考虑了水层多次波,又考虑了微屈多次波,所以压制因子和数据模型的一致性可以提高反褶积的效果。运用该方法在M工区进行了实验,结果表明,层间多次波得到了有效压制,有效波得到了较好恢复。
Water multiple and inter-layer multiple interference are common problems in the processing of offshore seismic data. These reflections can be suppressed by predicting deconvolution when the medium is a region with weak lateral variation and a medium hardness submarine reflection; however, when the seafloor is very hard and irregular, the inconsistency between the seafloor structure and the one-dimensional earth model renders the traditional The denoising method fails. The second-order operator (Remul method) of frequency slowness domain deduces the multiple suppression factor in the linear pull-out transform (T-p domain) based on the seismic forward modeling data. Because it is a model based on reflection data, considering both the multiples of the water layer and the micro-buckling multiple waves, the consistency of the suppression factor and the data model can improve the effect of deconvolution. The method was used to carry out the experiment in M work area. The result shows that the multi-layer multi-layer wave has been effectively suppressed and the effective wave has been recovered well.