High-order generalized screen propagator migration based on particle swarm optimization
He Run1, You Jia-Chun1, Liu Bin2, Wang Yan-Chun1, Deng Shi-Guang3, and Zhang Feng-Qi4
1. China University of Geosciences (Beijing), School of Geophysics and Information Technology, Beijing 100083, China.
2. Sinopec Geophysical Co., LTD, Shengli Branch, Dongying 257086, China.
3. Chinese Academy of Geological Sciences, Beijing 100037, China.
4. Petroleum Exploration and Production Research Institute, Beijing 100083, China.
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.
This research work is supported by the 863 Program of China (No. 2013AA064201) and National Science and Technology Major Project (No. 2016ZX05003-003).
Cite this article:
. High-order generalized screen propagator migration based on particle swarm optimization[J]. APPLIED GEOPHYSICS, 2017, 14(1): 64-72.
[1]
Baysal, E., Kosloff, D. D., and Sherwood, J. W. C., 1983, Reverse time migration: Geophysics, 48, 1514-1524.
[2]
Byoung, Y. K., Seol, S. J., Ho-Young L., and Joongmoo B., 2016, Prestack elastic generalized- screen migration for multicomponent data: Journal of Applied Geophysics, 126(3), 116-127.
[3]
Chen, J. B., 2010, On the selection of reference velocities for split-step Fourier and generalized- screen migration methods: Geophysics, 75(6), 249-257.
[4]
Claerbout, J. F., 1985, Imaging the earth's interior: Blackwell scientific publication, Inc., Cambridge, MA, USA, 73−103.
[5]
de Hoop, M. V., Le Rousseau, J. H., and Wu, R. S., 2000, Generalization of the phase-screen approximation for the scattering of acoustic waves: Wave Motion, 31, 285-296.
[6]
Ferguson, R. J., and Margrave, G. F., 2005, Planned seismic imaging using explicit one-way operators: Geophysics, 70(5), S101-S109.
[7]
Gazdag, J., 1978, Wave equation migration with the phase-shift method: Geophysics, 43, 1342-1351.
[8]
Kelamis, P. G., 1988, On the theory of Chebyshev polynomial in wave-equation migration: Geophysical Journal International, 94, 421-426.
[9]
Kennedy, J., and Eberhart, R. C., 1995, Particle Swarm Optimization: Proceedings of IEEE International Conference on Neural Networks, 4, 1942-1948.
[10]
Kennedy, J., and Eberhart, R. C., 2001, Swarm Intelligence: Morgan Kaufmann publication, San Francisco, 134−142.
[11]
Le Rousseau, J. H., and de Hoop, M. V., 2001, Modeling and imaging with the scalar generalized- screen algorithms in isotropic media: Geophysics, 66, 1551-1568.
[12]
Liu, L. N., and Zhang, J. F., 2006, 3D wavefield extrapolation with optimum split-step Fourier method: Geophysics, 71(3), T95-T108.
[13]
Mitchell, M., 1996, An introduction to genetic algorithms: MIT Press, Cambridge, MA, 155−178.
[14]
Ristow, D., and Rühl, T., 1994, Fourier finite-difference migration: Geophysics, 59, 1882-1893.
[15]
Ristow, D., and Rühl, T., 1997, Optimized operators for 3-D Fourier finite-difference migration: Journal of Seismic Exploration, 6, 367-383.
[16]
Schneider, W. A., 1987, Integral formulation for migration in two and three dimension: Geophysics, 43(1), 691−714.
[17]
Shin, S., Byun, J., and Seol, S. J., 2015, Imaging tilted transversely isotropic media with a generalized screen propagator: Exploration Geophysics, 46(4), 349-358.
[18]
Stoffa, R. H., 1978, Migration by Fourier transform: Geophysics, 43(1), 23−48.
[19]
Stoffa, P. L., Fokkema, J. T., de Luna Freire, R. M., and Kessinger, W. P., 1990, Split-step Fourier migration: Geophysics, 55, 410-421.
[20]
Zhang, J. H., Wang, W. M., Wang, S. Q., and Yao, Z. X., 2010, Optimized Chebyshev Fourier migration: A wide-angle dual-domain method for media with strong velocity contrasts: Geophysics, 75(2), 23-34.
[21]
Zhou, H. M., Chen, S. C., and Ren, H. R., 2014, One way wave equation least squares migration based on illumination compensation: Chinese Journal of Geophysics (in Chinese), 57(8), 2644-2655.
[22]
Zhu, S. W., Zhang, J. H., and Yao, Z. X., 2008, Globally optimized Fourier finite difference operator using simulated annealing algorithm based on parameter: Chinese Journal Geophysics (in Chinese), 51(6), 1844−1850.
2017, Vol. 14 
