1887

Abstract

Summary

Differential semblance optimization (DSO) is a popular method for the construction of a kinematically accurate velocity model for imaging applications. However, its gradient contains artifacts which affect the DSO performance. To resolve such a problem, a pseudo inverse operator under the assumption of laterally homogeneous background was used to generate the extended images for DSO. The laterally inhomogeneous version required extended images in the vertical offset direction, which is costly. We derive an extension of the approach to handle laterally inhomogeneous background media efficiently, and show that the term required for the laterally inhomogeneity treatment has a relatively small impact on the pseudo inverse operator for many cases.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201801252
2018-06-11
2024-04-18
Loading full text...

Full text loading...

References

  1. Alkhalifah, T. and Wu, Z.
    [2017] Migration velocity analysis using pre-stack wave fields. Geophysical Prospecting, 65(3), 639–649.
    [Google Scholar]
  2. Chauris, H. and Cocher, E.
    [2017] From migration to inversion velocity analysis. Geophysics, 82(3), S207–S223.
    [Google Scholar]
  3. Claerbout, J.F.
    [1971] Toward a unified theory of reflector mapping. Geophysics, 36(3), 467–481.
    [Google Scholar]
  4. Hou, J. and Symes, W.W.
    [2015] An approximate inverse to the extended Born modeling operator. Geophysics, 80(6), R331–R349.
    [Google Scholar]
  5. Sun, B. and Alkhalifah, T.
    [2017] Automatic Wave Equation Migration Velocity Analysis by Focusing Subsurface Virtual Sources. Geophysics, 83(2), 1–40.
    [Google Scholar]
  6. Symes, W.W.
    [2008] Migration velocity analysis and waveform inversion. Geophysical prospecting, 56(6), 765–790.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201801252
Loading
/content/papers/10.3997/2214-4609.201801252
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