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简述具有二阶精度的三维波场延拓保辛算子,结合复杂介质地震成像的实施流程,着重阐明:(1 )地震资料的相关预处理;(2 )2 5维叠前深度偏移速度估计;(3)三维叠前深度偏移成像实现。还给出对SW地区 1 2 6km2 三维地震资料处理的算例。结果表明,该算法流程实用性能良好。
In this paper, we briefly describe the three-dimensional wavefield preserving Baoshen operator with second-order precision. Combining with the implementation process of complex media seismic imaging, we focus on the following aspects: (1) Preprocessing of seismic data; (2) Prestack depth migration Velocity estimation; (3) 3D prestack depth migration imaging. An example of 3D seismic data processing of 126 km2 in SW area is also given. The results show that the algorithm has good practical performance.