1887

Abstract

Summary

Conventional deblending using random time delays has been the most popular technique in marine simultaneous source acquisition and processing for some time. Signal apparition using periodic time delays has recently emerged as an attractive alternative to conventional deblending. In this new technique, periodic modulation times are used to encode multiple sources during the acquisition of simultaneous source data. These data can later be decoded using the known modulation times to separate the simultaneous sources into the individual sources. This method has the potential to increase the density of seismic sources, which can improve subsurface sampling and reduce the acquisition time. In this paper, we present a new source separation method for seismic data encoded with periodic time delays and use it to process hexasource variable depth streamer data from the Utsira region in the North Sea. A comparison of our new method with a conventional deblending solution indicates similar separation quality.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.202113172
2021-10-18
2024-04-28
Loading full text...

Full text loading...

References

  1. Amundsen, L., Andersson, F., van Manen, D., Robertsson, J.O.A. and Eggenberger, K.
    [2018] Multisource encoding and decoding using the seismic apparition technique. Geophysics, 83(1), V49–V59.
    [Google Scholar]
  2. Andersson, F., Eggenberger, K., van Manen, D.-J., Robertsson, J. and Amundsen, L.
    [2016] Seismic apparition dealiasing using directionality regularization. SEG Technical Program Expanded Abstracts, 56–60.
    [Google Scholar]
  3. Andersson, F., Robertsson, J., van Manen, D.-J., Wittsten, J., Eggenberger, K. and Amundsen, L.
    [2017] Flawless diamond separation in simultaneous source acquisition by seismic apparition. Geophysical Journal International, 209, 1735–1739.
    [Google Scholar]
  4. Casasanta, L., Telling, R. and Grion, S.
    [2020] De-signature of apparition-blended seismic data: A North Sea example. SEG Technical Program Expanded Abstract, 2888–2892.
    [Google Scholar]
  5. Dhelie, P.E., Danielsen, V., Lie, J.E., Davenne, E., Vinje, V., Elboth, T., Camerer, A., Vanel, R., Wright, A., Salaun, N., Pellerin, S. and Henin, G.
    [2019] Hexasource Wide Tow Marine Acquisition Across the Utsira High in the North Sea. 81st EAGE Conference and Exhibition, 1–5.
    [Google Scholar]
  6. Grion, S., Martin, D. and Denny, S.
    [2018]. Modulation codes and data processing for seismic apparition of towed-streamer seismic data. SEG Technical Program Expanded Abstracts, 4201–4205.
    [Google Scholar]
  7. Robertsson, J., Amundsen, L. and Pedersen, Å.S.
    [2016a] Simultaneous source wavefield separation by signal apparition. Geophysical Journal International,206, 1301–1305.
    [Google Scholar]
  8. Robertsson, J. & Amundsen, L., Pedersen, Å.S., Eggenberger, K. & Andersson, F. and van Manen, D.-J.
    [2016b] Wavefield signal apparition: Simultaneous source separation. SEG Technical Program Expanded Abstracts, 102–106.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.202113172
Loading
/content/papers/10.3997/2214-4609.202113172
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