1887

Abstract

Summary

We present a multiple attenuation case study performed over an onshore orthogonal seismic survey where strong internal multiple contamination directly affects the relative amplitude between traces of primary reflection events. Preserving the primary relative amplitude trend is essential for any inversion and reservoir characterization process. The proposed workflow starts with understanding the internal multiple contamination pattern using borehole modelling to assess the overall contamination trend and amplitude trend between traces. The modelling is also used to identify formations responsible to generate strong internal multiples in the seismic record. Next, we predict the surface seismic multiples present in the seismic record using a data-driven forward modelling algorithm for surface and internal multiples. The predicted model is then subtracted from the field data using an adaptive matching process. Our results demonstrate a superior seismic inversion and a suitable input for reservoir assessment and delineation of the thin carbonates reservoirs present in this field.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201701239
2017-06-12
2024-04-23
Loading full text...

Full text loading...

References

  1. Ala’i, R., and Verschuur, D.J.
    [2003] Simultaneous adaptive least-squares subtraction of multiples. 65th EAGE Conference & Exhibition, Extended Abstracts, P193.
    [Google Scholar]
  2. Campbell, A., Leaney, S., Gulati, J., Leslie-Paneck, J. and Lunen, E.V.
    [2013] Images, anisotropy, multiples, and more from an unconventional 3D VSP. The Leading Edge, 1238–1244
    [Google Scholar]
  3. El-Emam, A., Moore, I., and Shabrawi, A.
    [2005] Interbed multiple prediction and attenuation: case history from Kuwait. 75th Annual International Meeting, SEG, Expanded abstracts, 448–451.
    [Google Scholar]
  4. El-Emam, A., Al-Deen, K., Zarkhidze, A., and Walz, A.
    [2011] Advances in interbed multiples prediction and attenuation: Case study from onshore Kuwait. 81st Annual International Meeting, SEG, Expanded Abstracts, 3546–3550.
    [Google Scholar]
  5. Ras, P., Volterrani, S., Walz, A., Hannan, A., Rao, N., Al-Ashwak, S., Kidambi, V., and Al-Qadeeri, B.
    [2012] A Well-driven Interbed Demultiple Workflow for Deep Carbonate Reservoirs of Kuwait. 74th EAGE Conference and Exhibition, Extended Abstracts, Y016.
    [Google Scholar]
  6. Wu, Z.J., Sonika, S., and Dragoset, W.
    [2011] Robust internal multiple prediction. 81st Annual International Meeting, SEG, Expanded Abstracts, 3541–3545.
    [Google Scholar]
  7. Xavier de Melo, F., Wu, Z.J., Kostov, C., Khalil, S., Dragoset, W., Bayri, H., and El-Emam, A.
    [2014] Interbed Multiple Attenuation in Kuwait — A Minagish Case Study Revisited. 76th EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201701239
Loading
/content/papers/10.3997/2214-4609.201701239
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