Abstract：Overturned waves are the reflections from the undersides of steeply dipping reflectors.Conventioal depth migration usually treats them as evanescent waves and ignores them when downward continuing the wave field.To migrate the overturned waves,the reverse time migration method based on the two-way non-reflecting wave equation was suggested by Baysal.Kosloff and Sherwood (1984).As an alternative approach to handle the same problem,a two-way extrapolation method to migrate the normal and the overturned reflections separately was recently proposed by Claerbout(1984).The princi ple of Claerbout's two-way extrapolation method and some practical computation examples are discussed in this paper.
收稿日期: 1984-08-02
引用本文:
李志明, J.F.Claerbout, R.A.Ottolini. 用双向外推法偏移翻转反射波[J]. 石油地球物理勘探, 1985, 20(1): 1-8.
Li Zhiming, J.F. Claerbout, R. A. Ottolini. Overturned-wave migration by two-way extrapolation. OGP, 1985, 20(1): 1-8.
