1887

Abstract

Summary

The coherence attribute is one of the most popularly used seismic attributes. It has been widely used for highlighting structural and stratigraphic discontinuities such as faults, fractures, and channels. We show that the popular C3 coherence algorithm is a special case of a Generalized Tensor-based Coherence (GTC) attribute. This attribute is computed by unfolding a seismic analysis tensor along different modes corresponding to time, inline, and crossline directions. We also present a novel preprocessing method based on a multivariate Gaussian kernel for computing coherence on seismic volumes. This method weighs seismic traces based on their relative proximity to the reference trace. Thus significantly reducing the noise in the covariance matrices, and amplifying the features close to the reference trace. We show that the proposed GTC coherence and the preprocessing method result in superior detail compared to other coherence attributes, and gives more freedom and flexibility to the seismic interpreter.

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/content/papers/10.3997/2214-4609.201601329
2016-05-31
2020-07-09
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References

  1. Aja-Fernández, S., de Luis García, R., Tao, D. and Li, X.
    [2009] Tensors in Image Processing and Computer Vision, Advances in Pattern Recognition, 21. Springer London, London.
  2. Bahorich, M. and Farmer, S.
    [1995] The coherence cube. The leading edge, (October), 1053–1058.
    [Google Scholar]
  3. dGB Earth Sciences, B.
    dGB Earth Sciences, B. [1987] The Netherlands Offshore, The North Sea, F3 Block - Complete. https://opendtect.org/osr/pmwiki.php/Main/Netherlands/OffshoreF3BlockComplete4GB.
  4. Gersztenkorn, A. and Marfurt, K.J.
    [1999] Eigenstructure-based coherence computations as an aid to 3-D structural and stratigraphic mapping. Geophysics, 64(5), 1468.
    [Google Scholar]
  5. Horn, R.A. and Johnson, C.R.
    (Eds.) [1986] Matrix Analysis. Cambridge University Press, New York, NY, USA.
  6. Li, F. and Lu, W.
    [2014] Coherence attribute at different spectral scales. Interpretation, 2(1), SA99–SA106.
    [Google Scholar]
  7. Marfurt, K.J., Kirlin, R.L., Farmer, S.L. and Bahorich, M.S.
    [1998] 3-D seismic attributes using a semblance-based coherency algorithm. Geophysics, 63(4), 1150.
    [Google Scholar]
  8. Sui, J.K., Zheng, X.D. and Li, YD.
    [2015] A seismic coherency method using spectral amplitudes. Applied Geophysics, 12(3), 353–361.
    [Google Scholar]
  9. Yang, T., Zhang, B. and Gao, J.
    [2015] A fast algorithm for coherency estimation in seismic data based on information divergence. Journal of Applied Geophysics, 115, 140–144.
    [Google Scholar]
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