1887

Abstract

Summary

In this study we have quantified the accuracy of six most common non-hyperbolic traveltime approximations for P-waves in VTI media in terms of medium anisotropy and ratio of the maximum source offset to reflector depth. Our analysis is based on the inversion of P-wave traveltimes for VTI anisotropy parameters of the medium as we believe that the accuracy of the inversion results is directly related to the accuracy of traveltime approximation. Our analysis shows that among all, only approximation presented by has enough accuracy to produce reliable estimates of VTI anisotropy parameters for both a wide range of medium anisotropy and wide offset /depth ratios.

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/content/papers/10.3997/2214-4609.20140989
2014-06-16
2024-04-24
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References

  1. Aleixo, R. and Schleicher, J.
    [2009] Traveltime approximations for q–P waves in vertical transversely isotropic media. Geophysical Prospecting, 58(2), 191–201.
    [Google Scholar]
  2. Alkhalifah, T. and Tsvankin, I.
    [1995] Velocity analysis for transversely isotropic media. Geophysics, 60(5), 1550–1566.
    [Google Scholar]
  3. Alkhalifah, T.
    [2000] The offset-midpoint traveltime pyramid in transversely isotropic media. Geophysics, 65(4), 1316–1325.
    [Google Scholar]
  4. [2011] Scanning anisotropy parameters in complex media. Geophysics, 76(2), U13–U22.
    [Google Scholar]
  5. Blias, E.
    [2009] Long-offset NMO approximations for a layered VTI model. Model study. SEG Technical Program, Expanded Abstracts, 3745–3749.
    [Google Scholar]
  6. de Bazelaire, E.
    [1988] Normal moveout revisited: Inhomogeneous media and curved interfaces. Geophysics, 53(2), 143–157.
    [Google Scholar]
  7. Golikov, P. and Stovas, A.
    [2012] Accuracy comparison of nonhyperbolic moveout approximations for qP-waves in VTI media. Journal of Geophysics and Engineering, 9, 428–432.
    [Google Scholar]
  8. Fomel, S. and Stovas, A.
    [2010] Generalized nonhyperbolic moveout approximation. Geophysics, 75(2), U9–U18.
    [Google Scholar]
  9. Fomel, S.
    [2004] On anelliptic approximations for qP velocities in VTI media. Geophysical Prospecting, 52(3), 247–259.
    [Google Scholar]
  10. Fowler, P.J.
    [2003] Practical VTI approximations: a systematic anatomy. Journal of Applied Geophysics, 54(3–4), 347–367.
    [Google Scholar]
  11. Lagarias, J.C., Reeds, J.A., Wright, M.H. and Wright, P.E.
    [1998] Convergence properties of the Nelder-Mead simplex method in low dimensions. SIAM Journal of Optimization, 9(1), 112–147.
    [Google Scholar]
  12. Taner, M., Treitel, S. and Al-Chalabi, M.
    [2005] A new travel time estimation method for horizontal strata. SEG Technical Program, Expanded Abstracts, 2273–2276.
    [Google Scholar]
  13. Thomsen, L.
    [1986] Weak elastic anisotropy. Geophysics, 51(10), 195–1966.
    [Google Scholar]
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