1887

Abstract

Summary

The multi-component receiver records complete wavefields, which include both P- and S-wave modes. The combination of P- and S-wave characteristics yields better insight into rock properties in the sub-surface. We propose a new approach to decoupling different wave modes in multi-component gather in anisotropic media. By solving the quartic dispersion relation and eigenvalue problem of the Christoffel equation, the polarization vectors of different wave modes can be obtained on the acquisition surface.

Accordingly, one can decouple different wave modes both into scalar and vector forms by projecting elastic wavefields onto polarization-related directions in the frequency-wavenumber domain. Synthetic examples demonstrate the validity of the proposed method.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201701035
2017-06-12
2020-07-08
Loading full text...

Full text loading...

References

  1. Al-anboori, A., M. V. D.Baan, and J. M.Kendall
    , 2005, Approximate separation of pure-mode and converted waves in 3-C reflection seismics by τ-p transform: Geophysics, 70, V81–V86.
    [Google Scholar]
  2. Cheng, J., and S.Fomel
    , 2014, Fast algorithms for elastic-wave-mode separation and vector decomposition using low-rank approximation for anisotropic media: Geophysics, 79, C97–C110.
    [Google Scholar]
  3. Dankbaar, J.
    , 1985, Separation of p-and s-waves: Geophysical Prospecting, 33, 970–986.
    [Google Scholar]
  4. Greenhalgh, S., I.Mason, E.Lucas, D.Pant, and R.Eames
    , 1990, Controlled direction reception filtering of p-and s-waves in τ-p space: Geophysical Journal International, 100, 221–234.
    [Google Scholar]
  5. Li, Z., X.Ma, C.Fu, B.Gu, and G.Liang
    , 2016, Frequency-wavenumber implementation for P- and S-wave separation from multi-component seismic data: Exploration Geophysics, 47, 32–43.
    [Google Scholar]
  6. Pedersen, O. r., B. r.Ursin, and A.Stovas
    , 2007, Wide-angle phase-slowness approximations in VTI media: Geophysics, 72, S177–S185.
    [Google Scholar]
  7. Robertsson, J. O.a. , and A.Curtis
    , 2002, Wavefield separation using densely deployed threecomponent singlesensor groups in land surfaceseismic recordings: Geophysics, 67, 1624–1633.
    [Google Scholar]
  8. Schoenberg, M. A., and M. V.De Hoop
    , 2000, Approximate dispersion relations for qP-qSV-waves in transversely isotropic media: Geophysics, 65, 919–933.
    [Google Scholar]
  9. Traub, B., and X.Li
    , 2005, Characterisation of near surface anisotropy using p and converted wave data: SEG Technical Program Expanded Abstracts2003, 797–800.
    [Google Scholar]
  10. Van Renterghem, C., C.Schmelzbach, and J.Robertsson
    , 2016, Wavefield separation of multicomponent land seismic data using spatial wavefield gradients: 78th EAGE Conference & Exhibition 2016, Vienna, Austria.
    [Google Scholar]
  11. Wang, Y., S. C.Singh, and P. J.Barton
    , 2002, Separation of p-and sv-wavefields from multi-component seismic data in the τ- p domain: Geophysical Journal International, 151, 663–672.
    [Google Scholar]
  12. Wapenaar, C., and G.Haimé
    , 1990, Elastic extrapolation of primary seismic p-and s-waves: Geophysical Prospecting, 38, 23–60.
    [Google Scholar]
  13. Zhang, J., D. J.Verschuur, and C. P. a.Wapenaar
    , 2001, Depth migration of shot records in heterogeneous, transversely isotropic media using optimum explicit operators: Geophysical Prospecting, 49, 287–299.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201701035
Loading
/content/papers/10.3997/2214-4609.201701035
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error