1887

Abstract

Summary

There is a desire by the marine geophysical industry for a seismic source with a low environmental footprint. Received sound pressure level (SPL) and sound exposure level (SEL) can restrict how seismic surveys can be conducted in sensitive areas.

To address this desire, we have developed a broadband non-impulsive source based on the concept of modular transducer elements. The source has a controlled output that can emit arbitrary signals, enables flexible source geometries, and can produce ultra-low frequency content that facilitates robust full waveform inversion.

Sea trials and testing indicate that the developed source will meet the challenging output demands and exhibit the necessary robustness to be a viable seismic source for the future. Large scale testing is planned in 2019.

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/content/papers/10.3997/2214-4609.201901131
2019-06-03
2020-08-15
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References

  1. Armstrong, B.
    [2005] Underwater sound projector system and method of producing same. United States Patent Application Publication, Pub. No. US8139443 B2
    [Google Scholar]
  2. Brenders, A., Dellinger, J., Kanu, C., Li, Q. and Michell, S.
    [2018] The Wolfspar® field trial: Results from a low-frequency seismic survey designed for FWI. 88th SEG Technical Program, Expanded Abstracts, 1083–1087.
    [Google Scholar]
  3. Dellinger, J., Ross, A., Meaux, D., Brenders, A., Gesoff, G., Etgen, J.T. and Naranjo, J.
    [2016] Wolfspar®, an “FWI-friendly” ultra-low-frequency marine seismic source. 86th SEG Technical Program, Expanded Abstracts, 4891–4895.
    [Google Scholar]
  4. Duncan, A.J., Weilgartb, L.S., Leaperc, R., Jasnyd, M. and Livermore, S.
    [2017] A modelling comparison between received sound levels produced by a marine Vibroseis array and those from an airgun array for some typical seismic survey scenarios. Marine Pollution Bulletin, 119(1), 277–288.
    [Google Scholar]
  5. Feltham, A., Girad, M., Jenckerson, M., Nechayuk, V., Griswold, S., Henderson, N. and Johnson, G.
    [2017] The Marine Vibrator Joint Industry Project: four years on. Exploration Geophysics, 49(5), 675–687.
    [Google Scholar]
  6. Gerez, D., Groenaas, H., LarsenP., WolfstirnO., PadulaM.
    [2015] Controlling Air-Gun Output to Optimize Seismic Content While Reducing Unnecessary High Frequency Emissions, 85th SEG Technical Program, Expanded Abstracts, 154–158.
    [Google Scholar]
  7. Kinsler, L.E., Frey, A.R., CoppensA.B. and Sanders, J.V.
    [2000] Fundamentals of Acoustics, fourth edition. John Wiley & Sons, New York
    [Google Scholar]
  8. Rietsch, E.
    [1977] Computerized Analysis of Vibroseis Signal Similarity. Geophysical Prospecting, 25, 541–552.
    [Google Scholar]
  9. Roy, D.A., Rekos, R., Brideau, C., Lawry, T. and CorradaC.
    [2018] A Marine Vibrator to Meet the Joint Industry Project Specification. 88th SEG Technical Program, Expanded Abstracts, 97–101.
    [Google Scholar]
  10. Tenghamn, R. and Long, A.
    [2006] PGS shows off electrical marine vibrator to capture ‘alternative’ seismic source market. First Break, 24, 33–36.
    [Google Scholar]
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