Poststack reverse-time migration using a non-reflecting recursive algorithm on surface relief
Zhang Min1, Li Zhen-Chun1, Zhang Hua2, and Sun Xiao-Dong1
1. College of Geo-Resource and Information, China University of Petroleum (East China), Dongying 257061, China.
2. Sichuan Petroleum Administrative Bureau, Chengdu 610051, China.
Abstract：
Presently the research based on the accurate seismic imaging methods for surface relief, complex structure, and complicated velocity distributions is of great significance. Reverse-time migration is considered to be one of highly accurate methods. In this paper, we propose a new non-reflecting recursive algorithm for reverse-time migration by introducing the wave impedance function into the acoustic wave equation and the algorithm for the surface relief case is derived from the coordinate transformation principle. Using the exploding reflector principle and the zero-time imaging condition of poststack reverse-time migration, poststack numerical simulation and reverse-time migration with complex conditions can be realized. The results of synthetic and real data calculations show that the method effectively suppresses unwanted internal reflections and also deals with the seismic imaging problems resulting from surface relief. So, we prove that this method has strong adaptability and practicality.
ZHANG Min,LI Zhen-Chun,ZHANG Hua et al. Poststack reverse-time migration using a non-reflecting recursive algorithm on surface relief[J]. APPLIED GEOPHYSICS, 2010, 7(3): 239-248.
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2010, Vol. 7 
