1887
  1. Home
  2. Conferences
  3. Conference Proceedings
  4. 79th EAGE Conference and Exhibition 2017
  5. Conference paper

Abstract

Summary

Time reversal (TR) is a fundamental concept, consisting of time-reversing and re-propagating the registered wave-field in order to focus it at its true physical source. We propose a way to estimate the velocity model in a cross-hole survey by focusing the full registered wave-field to its source location after time reversal and back propagation. This approach allows for picking-free velocity analysis as well as the usage of global optimization techniques that are insensitive to the initial velocity model. Using a plane wave approximation of the time-reversed data, we significantly reduce computation time and therefore propose a fully automatic and fast procedure for cross-hole velocity model building. We demonstrate the application of the method and its effectiveness on synthetic and field data examples.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201700602
2017-06-12
2024-04-20

  • From This Site

    /content/papers/10.3997/2214-4609.201700602
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. Anderson, B., Griffa, M., Larmat, C., Ulrich, T.J., and Johnson, P. A.
    [2008] Time reversal. Acoustics Today, 4(1), 5–16.
     [Google Scholar]
  2. Diaz, E. and Sava, P.C.
    [2016] Understanding the reverse time migration backscattering: noise or signal? Geophysical Prospecting, 64, 581–594.
     [Google Scholar]
  3. Fink, M.
    [1992] Time Reversal of Ultrasonic Fields-Part I: Basic Principles. IEEE Transactions on ultrasonics, ferroelectrics, and frequency control, 39(5), 555–566.
     [Google Scholar]
  4. [1999] Time-Reversed Acoustics. Scientific American, 281(5), 91–97.
     [Google Scholar]
  5. Guitton, A., Kaelin, B. and Biondi, B.
    [2007] Least-squares attenuation of reverse-time-migration artifacts. Geophysics, 72, S19–S23.
     [Google Scholar]
  6. Landa, E., Beydoun, W. and Tarantola, A.
    [1989] Reference velocity model estimation from prestack waveforms: coherency optimization by simulated annealing. Geophysics, 54, 984–990.
     [Google Scholar]
  7. Lellouch, A. and Reshef, M.
    [2017]. Shallow diffraction imaging in an SH-wave crosshole configuration. Geophysics, 82(1), S9–S18.
     [Google Scholar]
  8. Romero, L., Ghigliaz, D.,Ober, C. and Morton, S.
    [2000] Phase encoding of shot records in prestack migration. Geophysics, 65, 426–436.
     [Google Scholar]
  9. Sun, Y.
    [1992] Source focusing inversion of cross well seismic data. Annual Tomography Report, University of Utah.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201700602
Loading
Velocity Model Estimation Using Time-reversal Focusing
Conference Proceedings 2017, 1 (2017); https://doi.org/10.3997/2214-4609.201700602
/content/papers/10.3997/2214-4609.201700602
/content/papers/10.3997/2214-4609.201700602
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