1887

Abstract

Summary

Prismatic wave contains a lot of subsurface information that primary can not reach. In this paper, prismatic wave is used alone for imaging in order to improve the inversion speed of high and steep structure. Under the guidance of this idea, a prismatic waveform inversion (PWI) method is proposed. PWI has a significant drawback that an iteration time of PWI is more than twice as that of PWI, and in the meantime it can not use full wave field information, so prismatic waveform inversion is combined with full waveform inversion to propose a joint inversion method. In this method, FWI and PWI are applied alternately in the process of previous iterations, and only FWI is applied in the process of later iterations. Model test suggests that the joint inversion method is relatively less dependence on the initial model with high inversion efficiency and accuracy for the model with steep dip angle structure.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201412766
2015-06-01
2020-04-03
Loading full text...

Full text loading...

References

  1. Broto, K. and Lailly, P.
    [2001] Towards the tomogtaphic inversion of prismatic reflections. 71st Annual International Meeting, SEG, Expanded Abstracts, 726–729.
    [Google Scholar]
  2. Cavalca, M. and Lailly, P.
    [2001] Towards the tomogtaphic inversion of prismatic reflections. KIM 2001 Annual Report.
    [Google Scholar]
  3. Sabnis, U. and Gardner, G.H.F.
    [1989] Imaging the flanks of the salt dome. 59th Ann. Internat, Mtg., Soc. Expl. Geophysics., Expanded Abstracts, 526–529.
    [Google Scholar]
  4. Shin, C. and Min, D.J.
    [2006] Waveform inversion using a logarithmic wavefield. Geophysics, 71(3), R31–R42.
    [Google Scholar]
  5. Barnes, C.
    [2008] Full-waveform inversion results when using acoustic approximation instead of elastic medium. SEG Expanded Abstract, 27, 1895–1899.
    [Google Scholar]
  6. Sun, R. and McMechan, G.A.
    [1992] 2D full-wavefield inversion for wide aperture elastic seismic data. Geophysical Journal International, 111, 1–10.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201412766
Loading
/content/papers/10.3997/2214-4609.201412766
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