Variable-grid reverse-time migration of different seismic survey data
Sun Xiao-Dong1,2, Li Zhen-Chun1, and Jia Yan-Rui1
1. China University of Petroleum (East China), Qingdao 266580, China.
2. Laboratory for Marine Mineral Resource, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
Abstract：
With an increasing demand for high-resolution imaging of complex subsurface structures, thin layers and hidden reservoirs, borehole and cross-well seismic migration methods have become important. However, large differences are observed in the frequency bandwidth between the surface, borehole, and cross-well surveys. Thus, variable-grid-based algorithms have been adapted to reverse-time migration. Further, we introduce Lanczos filtering to ensure the stability of wavefield calculations as well as to decrease the artificial reflections that are caused due to the variable grid size. Finally, we observe that the application of this method to surface survey, borehole, and cross-well seismic data suggests improvements in the delineation of minor fractures and steeply dipping faults.
. Variable-grid reverse-time migration of different seismic survey data[J]. APPLIED GEOPHYSICS, 2017, 14(4): 517-522.
[1]
Duchon, C. E., 1979, Lanczos ?ltering in one and two dimensions: Appl. Meteorol., 18(2), 1016-1022.
[2]
Du, Q. Z., Guo, C. F., Zhao, Q., Gong, X. F., Wang, C. X., and Li, X. Y., 2017, Vector-based elastic reverse time migration based on scalar imaging condition: GEOPHYSICS, 82(2), 111−127.
[3]
Fan, J. W., Li, Z. C., Zhang, K., Zhang, M., and Liu, X. T., 2016, Multisource least-squares reverse-time migration with structure-oriented filtering: Applied Geophysics, 13(3), 491−499.
[4]
Gerard, T. S., 1993, Least-squares cross-well migration: 63rd SEG Technical Program Expanded Abstracts, 110−113.
[5]
He, R., Long, J. C., Liu, B., Wang, Y. C., Deng, S. G., and Zhang, F. Q., 2017, High-order generalized screen propagator migration based on particle swarm optimization: Applied Geophysics, 14(1), 64−72.
[6]
He, Y. Y., Hu, T. Y., He, C., and Tan, Y. Y., 2016, P-wave attenuation anisotropy in TI media and its application in fracture parameters inversion: Applied Geophysics, 13(4), 649−656.
[7]
Li, G. H., Feng, J. G., and Zhu, G. M., 2011, Quasi-P wave forward modeling in viscoelastic VTI media in frequency-space domain: Chinese Journal of Geophysic, 54(1), 200−207.
[8]
Liu, H. W., Ding, R. W., Liu, L., and Liu, H., 2013, Wavefield reconstruction methods for reverse time migration: Journal of Geophysics and Engineering, 10(1), 1−6.
[9]
Liu, L., Ding, R. W., Liu, H. W., and Liu, H., 2015, 3D hybrid-domain full waveform inversion on GPU: Computers & Geosciences, 83, 27−36.
[10]
Qu, Y. M., Li, Z. C., Huang, J. P., and Li, J. L., 2016, Prismatic and full-waveform joint inversion: Applied Geophysics, 13(3), 511−518.
[11]
Ren, H. R., Wang, H. Z., and Huang, G. H., 2012, Theoretical analysis and comparison of seismic wave inversion and imaging methods: Lithologic Reservoirs, 24(5), 12−18.
[12]
Sun, X. D., Ge, Z. H., Li, Z. C., and Hong, Y., 2016, The stability problem of reverse time migration for viscoacoustic VTI media: Applied Geophysics, 13(4), 608−613.
[13]
Tessmer, E., 2000, Seismic finite-difference modeling with spatially varying time steps: Geophysics, 65(4), 1290−1293.
[14]
Wang, Y. B., Zheng, Y. K., Xue, F., Chang, X., Tong W. F., and Luo, Y., 2017, Reverse time migration of multiples: Reducing migration artifacts using the wavefield decomposition imaging condition: Geophysics, 82(4), 307−314.
[15]
Yang, J. J., Luan, X. W., Fang, G., Liu, X. X., Pan, J., and Wang, X. J., 2016, Elastic reverse-time migration based on amplitude-preserving P- and S-wave separation: Applied Geophysics, 13(3), 500−510.
[16]
Yang, S. T., Wei, J. C., Cheng, J. L., Shi, L. Q., and Wen, Z. J., 2016, Numerical simulations of full-wave fields and analysis of channel wave characteristics in 3-D coal mine roadway models: Applied Geophysics, 13(4), 621−630.
[17]
Zhang J. H., Wang W. M., and Zhao, L. F., 2007, Modeling 3-D scalar waves using the Fourier finite-difference method: Chinese J. Geophys. (in Chinese), 50(6), 1854−1862.
[18]
Zhang, J. H., and Yao, Z. X., 2017, Exact local refinement using Fourier interpolation for nonuniform-grid modeling: Earth and Planetary Physics, 1, 58−62.
2017, Vol. 14 
