This work explores different approaches for the image domain least-squares migration with Point Spread Functions (PSFs) computed in pre-stack and post-stack domain, using both Reverse Time Migration (RTM) and Kirchhoff migration engines. We also present two applications in 3D datasets of deepwater offshore of Brazil. Both strategies showed that least-squares migration provide an uplift in the migration amplitudes and resolution even on geologically complex models.


Article metrics loading...

Loading full text...

Full text loading...


  1. Dai, W., Fowler, P. and Schuster, G. T.
    , 2012, Multi-source least-squares reverse time migration: Geophysical Prospecting, 60: 681–695.
    [Google Scholar]
  2. Fletcher, R.P., Archer, S., Nichols, D., Mao, W.
    , 2012, Inversion after depth imaging: Expanded Abstracts, SEG 82nd Annual Meeting, Las Vegas.
    [Google Scholar]
  3. Hu, J., Schuster, G. T. and Valasek, P. A.
    , 2001, Poststack migration deconvolution: Geophysics, 66, 939–952.
    [Google Scholar]
  4. Letki, L., Tang.J., Inyang, C. Du, X., Fletcher, R.
    2015, Depth domain inversion to improve fidelity of subsalt imaging: a Gulf of Mexico case study: First Break, 33, pp. 81–85.
    [Google Scholar]
  5. Nemeth, T.,Wu, C., and Schuster, G. T.
    , 1999, Least-squares migration of incomplete reflection data: Geophysics, 64, 208–221.
    [Google Scholar]
  6. Pereira-Dias, B., Bulcão, A., Soares Filho, D. M., Santos, L. A., Dias, R. M., Loureiro, F. P., and Duarte, F. S.
    , 2017, Least-Squares Migration in the Image Domain with Sparsity Constraints: An Approach for Super-Resolution in Depth Imaging: 15th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, pp. 1213–1218.
    [Google Scholar]
  7. Rosa, A. L. R.
    , 2018, The Seismic Signal and Its Meaning: Geophysical References Series, v. 23, Society of Exploration Geophysicists.
    [Google Scholar]
  8. Shin, C., Jang, S., Min, D.-J.
    , 2001, Improved amplitude preservation for prestack depth migration by inverse scattering theory: Geophysical Prospecting, v. 49, pp. 592–606.
    [Google Scholar]
  9. Tarantola, A.
    , 1986, A strategy for nonlinear elastic inversion of seismic reflection data: Geophysics, 51, no. 10, pp. 1893–1903.
    [Google Scholar]
  10. Valenciano, A. A., Biondi, L. B., Clapp, R. G
    , 2009, Imaging by target-oriented wave-equation inversion: Geophysics, 74, no. 6, pp. WCA109–WCA120.
    [Google Scholar]

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