1887

Abstract

Summary

Imaging below shallow gas bodies is one geophysical challenge encountered in offshore Southeast Asia basins. There are two key components in addressing this challenge: 1) the derivation of an accurate, high-resolution, geologically consistent velocity model and 2) compensating for the loss in signal strength and frequency bandwidth due to absorption of the signal as it propagates through the gas bodies. In this study, we present the application of FWI and Q tomography to a shallow-water, shallow-gas dataset from offshore Southeast Asia. We demonstrate the successful ability of FWI and Q tomography to resolve the low P-wave velocities and high attenuation of shallow gas bodies and subsequently compensate for the complex kinematics and absorption during depth migration.

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/content/papers/10.3997/2214-4609.201412775
2015-06-01
2024-03-28
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References

  1. Cavalca, M., Moore, I., and Zhang, L., et al.
    2011. Ray-based tomography for Q estimation and Q compensation in complex media. SEG Technical Program Expanded Abstracts: 3, 989–3,993.
    [Google Scholar]
  2. Hu, W., Liu, J., Bear, L., and Marcinkovich, C.
    , 2011. A robust and accurate seismic attenuation tomography algorithm. SEG Technical Program Expanded Abstracts: 3, 989–3,993.
    [Google Scholar]
  3. Kapoor, S., Vigh, D., and Wiarda, E., et al.
    2013. Full Waveform Inversion Around the World. 75th EAGE Conference & Exhibition Extended Abstracts: We 11 03.
    [Google Scholar]
  4. Plessix, R., Baeten, G., and de Maag, J.W., et al.
    2010. Application of Acoustic Full Waveform Inversion to a Low-Frequency Large-Offset Land Data Set. SEG Technical Program Expanded Abstracts: 930–934.
    [Google Scholar]
  5. Sirgue, L., and Barkved, O.
    , 2009. 3D Waveform Inversion on Valhall Wide-Azimuth OBC. 71st EAGE Conference & Exhibition Extended Abstracts: U038.
    [Google Scholar]
  6. Tarantola, A.
    1984. Inversion of Seismic Reflection Data in the Acoustic Approximation. Geophysics49 (8): 1,259–1,266.
    [Google Scholar]
  7. Vigh, D., Kapoor, J., and Li, H.
    2011. Full-Waveform Inversion Application in Different Geological Settings. SEG Technical Program Expanded Abstracts: 2, 374–2378.
    [Google Scholar]
  8. Vigh, D., Jiao, K., and Sun, D., et al.
    2013. What Are the Critical Elements of a Successful Full-Waveform Project?75th EAGE Conference & Exhibition Extended Abstracts: A01.
    [Google Scholar]
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