1887
Volume 42, Issue 5
  • ISSN: 0263-5046
  • E-ISSN: 1365-2397

Abstract

Abstract

Multi-component data recorded during Ocean-Bottom Seismic (OBS) surveys captures both PP and PS events. PP and PS images provide complementary information about reservoir properties. The quality of both these types of images depends on the accuracy of the P-wave and S-wave velocity models, and , respectively. In this paper, focusing on data from a shallow water OBS survey in the Central North Sea, we show, first, how a high-resolution 65 Hz model, obtained using Time-Lag FWI, can improve the imaging from the shallow to the deep. Similar improvements are then shown for PS data using a 30 Hz model obtained from PS reflection-FWI. The most remarkable achievement is the flattening of the undulating chalk and top reservoir surfaces on both the and FWI Images, obtained from PP and PS data, respectively, which was confirmed by drilling observations. These derived and FWI Images reduce the uncertainty in reservoir characterisation.

Loading

Article metrics loading...

/content/journals/10.3997/1365-2397.fb2024037
2024-05-01
2024-05-22
Loading full text...

Full text loading...

References

  1. Bardainne, T. [2018]. Joint inversion of refracted P-waves, surface waves and reflectivity.80th EAGE Conference & Exhibition, Extended Abstracts, We K 02.
    [Google Scholar]
  2. Colnard, O., Loh, F.C., Doshi, R., Barkov, A., Lyandres, A., Lam Anh, N., Van Thanh, P., Van Khuong, V., Tien Vien, P., Gataulin, R., Geideko, O., Litunovsky, A. and Trong Khanh, N. [2019]. PP/PS Processing, Inversion and Interpretation of Vietnam’s First 3D-4C OBC Survey in the Cuu Long Basin.81st EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
  3. Dhelie, P.E., Danielsen, V., Haugen, J.A., Straith, K.R., Bakke, B.A., Janot, L, Roodaki, A. and Yu, Z. [2022]. Improved Reservoir Image and Well Placement Using Time-Lag Full Waveform Inversion. 83rd EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
  4. Feng, Z. and Schuster, G. [2019]. True-amplitude linearized waveform inversion with the quasi-elastic wave equation.Geophysics, 84(6), 827–844.
    [Google Scholar]
  5. Masmoudi, N., Ratcliffe, A., Wang, M., Xie, Y. and Wang, T. [2021]. A practical implementation of converted-wave reflection full-waveform inversion.82nd EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
  6. Peiro, M., Gao, W., Fotsoh, A., Masmoudi, N., Roodaki, A., Ratcliffe, A., Prigent, H., Leblanc, O. & Dhelie, P.E., Danielsen, V., Haugen, J.A. and Straith, K.R. [2022]. PS Imaging on the Edvard Grieg Field: Application of PS Reflection FWI and FWI Imaging.83rd EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
  7. Salaun, N., Reinier, M., Espin, I. and Gigou, G. [2021]. FWI velocity and imaging: A case study in the Johan Castberg area.82nd EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
  8. Twynam, F., Ford, R., Caprioli, P., Hooke, M., Whitebread, R., Dhelie, P.E., Danielsen, V. and Straith, K.R. [2020]. Improved reservoir monitoring with PP & PS time-lapse imaging utilising up/down deconvolution: Edvard Grieg field.81st EAGE Conference & Exhibition, Extended Abstract.
    [Google Scholar]
  9. Xu, S., Chen, F., Lambaré, G., Zhang, Y. and Wang, D. [2012]. Inversion on reflected seismic wave.82nd Annual International Meeting, SEG, Expanded Abstracts.
    [Google Scholar]
  10. Zhang, Z., Mei, J., Lin, F., Huang, R. and Wang, P. [2018]. Correcting for salt misinterpretation with full waveform inversion.88th Annual International Meeting, SEG, Expanded Abstracts, 143–1147.
    [Google Scholar]
  11. Zhang, Z., Wu, Z., Wei, Z., Mei, J., Huang, R. and Wang, P. [2020]. FWI Imaging: Full-wavefield imaging through full-waveform inversion. 90th Annual International Meeting, SEG, Expanded Abstracts, 656–660.
    [Google Scholar]
/content/journals/10.3997/1365-2397.fb2024037
Loading
/content/journals/10.3997/1365-2397.fb2024037
Loading

Data & Media loading...

  • Article Type: Research Article
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