【摘要】 面向目标的控制照明叠前深度偏移属于面炮偏移方法的一种特殊情况.通过对目标区域波场照射方向的控制,实现波场在目的层的最佳入射,提高目标区域成像质量.将目的层定义的目标合成算子外推到地表形成地表合成算子,应用地表合成算子进行波面源和记录的合成,最后通过地表合成算子的一系列旋转,实现旋转控制照明叠前深度偏移.本文系统阐述了面向目标的合成曲面波控制照明叠前深度偏移方法的基本原理和实现方法,通过数值模型试算验证了该方法的有效性,最后将其应用到某探区实际资料的处理中,并进行了实际资料的应用效果分析,总结了其在实际资料应用中的特点.更多还原

【Abstract】 Target oriented controlled illumination pre-stack depth migration is one of the area shot migration methods.With controlling the directional of incident wave,we get the optimal illumination of target layers.Propagating the synthetic operator defined at the target layer to surface,we synthesized the area shot and records.After a series of rotation of the operator,we have realized the target oriented controlled illumination pre-stack depth migration.In this paper,the theory of target oriented curved-wave pre-stack depth migration method is fully illustrated.Numerical model test the validity of our method.We also applied to real data processing and analyzed the application result.Finally,we got some conclusion of the real data processing with this method.更多还原