1887
Volume 52, Issue 4
  • E-ISSN: 1365-2478

Abstract

ABSTRACT

Faithful recording of the elastic wavefield at the sea‐bed is required for quantitative applications of 4C seismic. The accuracy of the recorded vectorial wavefield depends on factors that vary from deployment to deployment. This paper focuses on one such factor: the interaction of the acquisition system with the sea‐bed, which is referred to here as coupling. We show, using multi‐azimuth data recorded with a cable‐based sea‐bed acquisition system, whose sensor housing is cylindrically shaped and with the in‐line geophone fixed to the cable, that coupling depends on the propagation direction and wave type (P‐ or S‐waves) of the incident wavefield. We show that coupling is more critical for S‐waves than for P‐waves. Detection of inconsistent coupling using both P‐ and S‐waves is therefore mandatory. A data‐driven processing method to compensate for the frequency‐dependent coupling response of the cross‐line geophone is derived. Its application to field data verifies the effectiveness of the method.

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2004-06-11
2020-08-08
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References

  1. BergE., SvenningB. and MartinJ.1994. SUMIC: multicomponent sea‐bottom seismic surveying in the North Sea – data interpretation and applications. 64th SEG meeting, Los Angeles , USA , Expanded Abstracts, 477–480.
  2. CaldwellJ.1999. Marine multicomponent seismology. The Leading Edge18, 1274–1282.
    [Google Scholar]
  3. DellingerJ., ClarkeR. and GutowskiP.2001. Horizontal vector infidelity correction by general linear transform. 71st SEG meeting, San Antonio , Texas , USA , Expanded Abstracts, 865–868.
  4. DrijkoningenG.G.2000. The usefulness of geophone ground‐coupling experiments to seismic data. Geophysics65, 1780–1787.
    [Google Scholar]
  5. GaiserJ.E.1998. Compensating OBC data for variations in geophone coupling. 68th SEG meeting, New Orleans , USA , Expanded Abstracts, 1429–1432.
  6. GaiserJ.E., BarrF.J. and PaffenholzJ.2000. Horizontal and vertical receiver consistent deconvolution for an ocean bottom cable. U.S. Patent 6021090.
  7. GarmanyJ.D.1984. The recovery of true particle motion from three‐component ocean bottom seismometer data. Journal of Geophysical Research89, 9245–9252.
    [Google Scholar]
  8. HooverG.M. and O'BrienJ.T.1980. The influence of the planted geophone on seismic land data. Geophysics45, 1239–1253.
    [Google Scholar]
  9. KrohnC.E.1984. Geophone ground coupling. Geophysics49, 722–731.
    [Google Scholar]
  10. LewisB.T.R. and TuthillJ.D.1981. Instrumental waveform distortion on ocean bottom seismometers. Marine Geophysical Research5, 77–85.
    [Google Scholar]
  11. LiX.Y. and YuanJ.1999. Geophone orientation and coupling in sea‐floor data. Geophysical Prospecting47, 995–1013.
    [Google Scholar]
  12. PopeD.A., KommedalJ.H. and HansenJ.O.2000. Using 3D 4C seismic to drill beneath the Lomond gas cloud. 62nd EAGE conference, Glasgow , UK , Extended Abstracts, Session L0001.
  13. ProbertT. and WellsS.2000. The Gryphon 4C survey – processing and results. 62nd EAGE conference, Glasgow , UK , Extended Abstracts, Session L0006.
  14. RademakersF., DrijkoningenG.G. and FokkemaJ.T.1996. Geophone ground coupling: New elastic approach. 66th SEG meeting, Denver , USA , Expanded Abstracts, 1083–1086.
  15. SuttonG.H., DuennebierF.K. and IwatakeB.1981. Coupling of ocean bottom seismometer of soft bottom. Marine Geophysical Research5, 69–78.
    [Google Scholar]
  16. TreeE.L.1999. The vector infidelity of the ocean bottom multicomponent seismic acquisition system. 61st EAGE conference, Helsinki , Finland , Extended Abstracts, 6–19.
  17. WashburnH. and WileyH.1941. The effect of the placement of a seismometer on its response characteristics. Geophysics6, 116–131.
    [Google Scholar]
  18. WolfA.1944. The equation of motion of a geophone on the surface of an elastic earth. Geophysics9, 29–35.
    [Google Scholar]
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