1887

Abstract

Summary

Velocity model building and parameter estimation make the routine time-domain seismic imaging algorithms time-consuming and labor-intensive. Cost-effective alternatives to those algorithms are the oriented techniques that use the derivatives of traveltimes with respect to the location of receivers on the acquisition surface, including local slopes and curvatures. However, estimation of curvatures or the second derivatives/curvatures with sufficient accuracy is a problematic task. The local slopes are sufficient enough to provide complete information about moveout curves, velocity fields, anisotropic parameters, and in general the subsurface structures. In this paper, we show that that accuracy of the techniques that rely only on the local slopes is significantly higher than the techniques that employ both the local slopes and curvatures. This is demonstrated in two different subjects of time-domain seismic imaging: pre-stack migration and moveout parameter estimation in vertical transverse isotropic media.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201801343
2018-06-11
2020-07-16
Loading full text...

Full text loading...

References

  1. Bóna, A.
    [2011] Shot-gather time migration of planar reflectors without velocity model. Geophysics, 76(2), S93–S101.
    [Google Scholar]
  2. Burnett, W. and Fomel, S.
    [2009] Moveout analysis by time-warping. 9th SEG Annual International Meeting, Expanded Abstracts, 3710–3714.
    [Google Scholar]
  3. Cooke, D., Bóna, A. and Hansen, B.
    [2009] Simultaneous time imaging, velocity estimation and multiple suppression using local event slopes. Geophysics, 74(6), WCA65–WCA73.
    [Google Scholar]
  4. Fomel, S.
    [2007] Velocity-independent time-domain seismic imaging using local event slopes. Geophysics, 72(3), S139–S147.
    [Google Scholar]
  5. [2010] Predictive painting of 3D seismic volumes. Geophysics, 75(4), A25–A30.
    [Google Scholar]
  6. Khoshnavaz, M. J., Bóna, A., Dzunic, A., UngK. and Urosevic, M.
    [2016a] Oriented prestack time migration using local slopes and predictive painting in the common-source domain for planar reflectors. Geophysics, 81(6), S409–S418.
    [Google Scholar]
  7. Khoshnavaz, M. J., Bóna, A. and Urosevic, M.
    [2016b] Velocity-independent estimation of kinematic attributes in vertical transverse isotropy media using local slopes and predictive painting. Geophysics, 81(5), U73–U85.
    [Google Scholar]
  8. Khoshnavaz, M. J.
    [2017] Oriented time-domain dip moveout correction for planar reflectors in common-source domain. Geophysics, 82(6), U87–U97.
    [Google Scholar]
  9. Landa, E., Keydar, S. and Moser, T. J.
    [2010] Multifocusing revisited — Inhomogeneous media and curved interfaces. Geophysical Prospecting, 58, 925–938.
    [Google Scholar]
  10. Malovichko, A. A.
    [1978] A new representation of the traveltime curve of reflected waves in horizontally layered media. Applied Geophysics (in Russian), 91, 47–53.
    [Google Scholar]
  11. Rad, P. B., Schwarz, B., Vanelle, C. and Gajewski, D.
    [2014] Common reflection surface (CRS) based pre-stack diffraction separation. 4th SEG Annual Meeting, Expanded Abstracts, 4208–4212.
    [Google Scholar]
  12. Stovas, A. and Fomel, S.
    [2016] Mapping of moveout attributes using local slopes. Geophysical Prospecting, 64, 31–37.
    [Google Scholar]
  13. Tsvankin, I. and Grechka, V.
    [2011] Seismology of azimuthally anisotropic media and seismic fracture characterization. SEG.
    [Google Scholar]
  14. Yilmaz, O.
    [2001] Seismic data analysis. SEG.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201801343
Loading
/content/papers/10.3997/2214-4609.201801343
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