1887
Volume 46, Issue 2
  • ISSN: 0812-3985
  • E-ISSN: 1834-7533

Abstract

[

Based on anisotropic kinematic and dynamic ray tracing systems, an anisotropic Gaussian beam prestack depth migration method for P-wave data in transversely isotropic media is presented in this paper. Tests of synthetic and field seismic data demonstrate that the method is accurate and efficient.

,

The transversely isotropic (TI) media approximation is commonly applied to assist in the processing of seismic data acquired in sedimentary environments. Based on anisotropic kinematic and dynamic ray tracing systems, a P-wave Gaussian beam prestack depth migration (GB-PSDM) method for TI media is introduced in this paper. The imaging principle of anisotropic GB-PSDM and the corresponding migration parameters are presented on the basis of the GB-PSDM method in isotropic media. Tests of synthetic and field seismic data show that the method is an accurate and efficient anisotropic prestack depth migration method in TI media.

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/content/journals/10.1071/EG13061
2015-06-01
2026-01-23
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References

  1. Alkhalifah T. 1995 Gaussian beam depth migration for anisotropic media: Geophysics 60 1474 1484 10.1190/1.1443881
    https://doi.org/10.1190/1.1443881 [Google Scholar]
  2. Alkhalifah T. Larner K. 1994 Migration errors in transversely isotropic media: Geophysics 59 1405 1418 10.1190/1.1443698
    https://doi.org/10.1190/1.1443698 [Google Scholar]
  3. Ball G. 1995 Estimation of anisotropy and anisotropic 3D prestack depth migration, offshore Zaire: Geophysics 60 1495 1513 10.1190/1.1443883
    https://doi.org/10.1190/1.1443883 [Google Scholar]
  4. Behera L. Tsvankin I. 2009 Migration velocity analysis for tilted transversely isotropic media: Geophysical Prospecting 57 13 26 10.1111/j.1365‑2478.2008.00732.x
    https://doi.org/10.1111/j.1365-2478.2008.00732.x [Google Scholar]
  5. Červeny V. 1972 Seismic rays and ray intensities in inhomogeneous anisotropic media: Geophysical Journal International 29 1 13 10.1111/j.1365‑246X.1972.tb06147.x
    https://doi.org/10.1111/j.1365-246X.1972.tb06147.x [Google Scholar]
  6. Červeny, V. 2001, Seismic ray theory: Cambridge University Press.
  7. Du X. Bancroft J. C. Lines L. R. 2007 Anisotropic reverse-time migration for tilted TI media: Geophysical Prospecting 55 853 869 10.1111/j.1365‑2478.2007.00652.x
    https://doi.org/10.1111/j.1365-2478.2007.00652.x [Google Scholar]
  8. Gray S. H. 2005 Gaussian beam migration of common-shot records: Geophysics 70 S71 S77 10.1190/1.1988186
    https://doi.org/10.1190/1.1988186 [Google Scholar]
  9. Gray S. H. Bleistein N. 2009 True-amplitude Gaussian-beam migration: Geophysics 74 S11 S23 10.1190/1.3052116
    https://doi.org/10.1190/1.3052116 [Google Scholar]
  10. Hale, D., 1992a, Migration by the Kirchhoff, slant stack and Gaussian beam methods: Colorado School of Mines Center for Wave Phenomena Report 121.
  11. Hale, D., 1992b, Computational aspects of Gaussian beam migration: Colorado School of Mines Center for Wave Phenomena Report 139.
  12. Hanyga A. 1986 Gaussian beams in anisotropic elastic media: Geophysical Journal International 85 473 504 10.1111/j.1365‑246X.1986.tb04528.x
    https://doi.org/10.1111/j.1365-246X.1986.tb04528.x [Google Scholar]
  13. Hill N. R. 1990 Gaussian beam migration: Geophysics 55 1416 1428 10.1190/1.1442788
    https://doi.org/10.1190/1.1442788 [Google Scholar]
  14. Hill N. R. 2001 Prestack Gaussian-beam depth migration: Geophysics 66 1240 1250 10.1190/1.1487071
    https://doi.org/10.1190/1.1487071 [Google Scholar]
  15. Pedersen Ø. Ursin B. Helgesen H. K. 2010 One-way wave-equation migration of compressional and converted waves in a VTI medium: Geophysics 75 S237 S248 10.1190/1.3509466
    https://doi.org/10.1190/1.3509466 [Google Scholar]
  16. Popov, M. M., Semtchenok, N. M., Popov, P. M., and Verdel, A. R., 2008, Reverse time migration with Gaussian beams and velocity analysis applications: 70th Annual International Meeting, EAGE, Extended Abstracts, F048.
  17. Popov M. M. Semtchenok N. M. Popov P. M. Verdel A. R. 2010 Depth migration by the Gaussian beam summation method: Geophysics 75 S81 S93 10.1190/1.3361651
    https://doi.org/10.1190/1.3361651 [Google Scholar]
  18. Thomsen L. 1986 Weak elastic anisotropy: Geophysics 51 1954 1966 10.1190/1.1442051
    https://doi.org/10.1190/1.1442051 [Google Scholar]
  19. Tsvankin, I., 2005, Seismic signatures and analysis of reflection data in anisotropic media (2nd edition): Elsevier Science Publ. Co., Inc.
  20. Tsvankin I. Gaiser J. Grechka V. Baan M. V. D. Thomsen L. 2010 Seismic anisotropy in exploration and reservoir characterization: an overview: Geophysics 75 A15 A29 10.1190/1.3481775
    https://doi.org/10.1190/1.3481775 [Google Scholar]
  21. Vestrum R. W. Lawton D. C. Schmid R. 1999 Imaging structures below dipping TI media: Geophysics 64 1239 1246 10.1190/1.1444630
    https://doi.org/10.1190/1.1444630 [Google Scholar]
  22. Wang Z. J. 2002 Seismic anisotropy in sedimentary rocks, part 2: laboratory data: Geophysics 67 1423 1440 10.1190/1.1512743
    https://doi.org/10.1190/1.1512743 [Google Scholar]
  23. Winterstein D. F. 1990 Velocity anisotropy terminology for geophysicists: Geophysics 55 1070 1088 10.1190/1.1442919
    https://doi.org/10.1190/1.1442919 [Google Scholar]
  24. Zhang J. F. Verschuur D. J. Wapenaar C. P. A. 2001 Depth migration of shot records in heterogeneous, transversely isotropic media using optimum explicit operators: Geophysical Prospecting 49 287 299 10.1046/j.1365‑2478.2001.00255.x
    https://doi.org/10.1046/j.1365-2478.2001.00255.x [Google Scholar]
  25. Zhang L. B. Rector J. W. III Hoversten G. M. 2004 Reverse time migration in tilted transversely isotropic media: Journal of Seismic Exploration 13 173 188
    [Google Scholar]
  26. Zhu T. F. Gray S. H. Wang D. L. 2007 Prestack Gaussian-beam depth migration in anisotropic media: Geophysics 72 S133 S138 10.1190/1.2711423
    https://doi.org/10.1190/1.2711423 [Google Scholar]
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