1887

Abstract

Summary

Despite of the limitation of the ray theory, an edge-preserving velocity model is always preferred for any a ray-based tomography method. In this abstract, we present a practical model regularization technique towards this goal by incorporating the blocky geological boundary information when deriving the Fréchet derivatives matrix of the stereotomography. The updated model will automatically present the blocky geological boundary feature as it is supposed to be. The geological boundary information will be updated at the end of each iteration with a kinematic migration based on some zero-offset horizons picked in advance. Compared with the conventional edge preserving tomography or the multi-layer stereotomgraphy, the presented regularization technique does not depend on a hybrid velocity format or the hybrid regularization based on the edge preserving smooth operator. It is more straightforward and more easily implemented. The synthetic data example and the real data case demonstrated the effectiveness of the presented method. We expect that the inverted model can be used for reverse-time migration or as the good starting model for full-wave inversion.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201413047
2015-06-01
2020-06-07
Loading full text...

Full text loading...

References

  1. Billette, F. and G.Lambaré
    , 1998, Velocity macro-model estimation from seismic reflection data by stereotomography. Geophysical Journal International, 135(2): p. 671–690.
    [Google Scholar]
  2. Guillaume, P., Hollingworth, S. Zhang, X. et al
    , 2013, Multi-layer Non-linear Slope Tomography, 75th EAGE extended abstracts.
    [Google Scholar]
  3. Zhang, X., Zhang, J.
    , 2012, Edge preserving regularization for seismic traveltime tomography, 82nd SEG expanded abstracts, 2830–3834.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201413047
Loading
/content/papers/10.3997/2214-4609.201413047
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