1887
  1. Home
  2. Conferences
  3. Conference Proceedings
  4. 76th EAGE Conference and Exhibition 2014
  5. Conference paper

Abstract

Summary

Adapting reverse-time migration (RTM) and demigration (RTDM) as the migration and modeling operators to maximize the cross-correlation between the simulated and the acquired seismic data, we introduce a new practical least-squares RTM (LSRTM) scheme and derive a steepest descent method in seeking the optimal image. Through both synthetic and real data experiments, we demonstrate that the proposed LSRTM provides high quality images with balanced amplitudes, improved focusing and enhanced resolution. The method is also capable of removing free surface ghosts caused by towed streamer acquisition, filling the structures at the acquisition holes. Together with ghost compensation and impedance perturbation techniques, the proposed method can be a useful tool for both seismic imaging and inversion.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.20141159
2014-06-16
2024-04-26

  • From This Site

    /content/papers/10.3997/2214-4609.20141159
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Dai, W., Wang, X. and Schuster, G.
    , 2011, Least-squares migration of multisource data with a deblurring filter: Geophysics, 76, No. 5, 135–146.
     [Google Scholar]
  2. Nemeth, T., Wu, C. and Schuster, G.
    , 1999, Least-squares migration of incomplete reflection data: Geophysics, 64, No. 1, S208–S221.
     [Google Scholar]
  3. Tang, Y.
    , 2008, Wave-equation Hessian by phase encoding: 78th Annual International Meeting, SEG, Expanded Abstracts, 27, 2201–2205.
     [Google Scholar]
  4. Yao, G. and Jakubowicz, H.
    , 2012, Least-squares reverse-time migration: 83rd Annual International Meeting, SEG, Expanded Abstracts, 3406–3410.
     [Google Scholar]
  5. Zhang, Y. and Sun, J.
    , 2009, Practical issues of reverse time migration: true-amplitude gathers, noise removal and harmonic-source encoding, First Break, 26, 19–25.
     [Google Scholar]
  6. Zhang, Y. and Duan, L.
    , 2012, Predicting multiples using a reverse time demigration: 83rd Annual International Meeting, SEG, Expanded Abstracts, 520–524.
     [Google Scholar]
  7. Zhang, Y., Duan, L. and Roberts, G.
    , 2013, True Amplitude Reverse Time Migration-From Reflectivity to Velocity and Impedance Perturbations, 75th EAGE Conference & Exhibition, Expanded Abstract TU 11 02.
     [Google Scholar]
  8. Zhang, Y., Duan, L. and Xie, Y.
    , 2013, A stable and practical implementation of least-squares reverse time migration, Submitted to Geophysics.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20141159
Loading
Correlative Least-Squares Reverse Time Migration and Its Applications
Conference Proceedings 2014, 1 (2014); https://doi.org/10.3997/2214-4609.20141159
/content/papers/10.3997/2214-4609.20141159
/content/papers/10.3997/2214-4609.20141159
Loading

Data & Media loading...

Most Cited This Month Most Cited RSS feed

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