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- Title
High-order generalized screen propagator migration based on particle swarm optimization.
- Authors
He, Run; You, Jia-Chun; Liu, Bin; Wang, Yan-Chun; Deng, Shi-Guang; Zhang, Feng-Qi
- Abstract
Various migration methods have been proposed to image high-angle geological structures and media with strong lateral velocity variations; however, the problems of low precision and high computational cost remain unresolved. To describe the seismic wave propagation in media with lateral velocity variations and to image high-angle structures, we propose the generalized screen propagator based on particle swarm optimization (PSO-GSP), for the precise fitting of the single-square-root operator. We use the 2D SEG/EAGE salt model to test the proposed PSO-GSP migration method to image the faults beneath the salt dome and compare the results to those of the conventional high-order generalized screen propagator (GSP) migration and split-step Fourier (SSF) migration. Moreover, we use 2D marine data from the South China Sea to show that the PSO-GSP migration can better image strong reflectors than conventional imaging methods.
- Subjects
PARTICLE swarm optimization; SEISMIC waves; THEORY of wave motion; OPTICAL reflectors; SQUARE root
- Publication
Applied Geophysics: Bulletin of Chinese Geophysical Society, 2017, Vol 14, Issue 1, p64
- ISSN
1672-7975
- Publication type
Article
- DOI
10.1007/s11770-017-0602-4