1887

Abstract

Summary

In this case study from the Norwegian North Sea, we demonstrate how applying a modern high-frequency Full-Waveform Inversion (FWI) workflow to ocean-bottom seismic data can significantly improve the migrated image, both in terms of imaging quality and prediction of depth structures. These improvements are particularly crucial when small changes in the migration velocity model can have a substantial impact on field-development decisions. A customized approach to building the anisotropy model, based on existing qualitative and quantitative geological data, further enhanced the inverted velocity model. Optimizing the FWI workflow and the input anisotropy models led to the complete elimination of global reflection tomography, while still achieving flat gathers and minimal well-to-seismic mismatches.

© EAGE Publications BV
Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.2025101318
2025-06-02
2026-02-06

  • From This Site

    /content/papers/10.3997/2214-4609.2025101318
    dcterms_title,dcterms_subject,pub_keyword
    -contentType:Journal -contentType:Contributor -contentType:Concept -contentType:Institution
    10
    5
Loading full text...

Full text loading...

References

  1. D.Brager, S.Sonika, G.Apeland, R.Kumar, P.Bilsby, H.M.Zadeh, K.Henneberg, and Y.Ivanov, 2023. Joint seismic interference and simultaneous source separation in an OBN survey using multistage iterative source separation. In 84th EAGE Annual Conference & Exhibition, European Association of Geoscientists & Engineers.
     [Google Scholar]
  2. O.Lewis, G.Apeland, C.Thorgersen, and A.Cooke, 2024. High-Resolution Elastic Full-Waveform Inversion: a North Sea Case Study. In 85th EAGE Annual Conference & Exhibition, European Association of Geoscientists & Engineers.
     [Google Scholar]
  3. R.Huang, Z.Zhang, Z.Wu, Z.Wei, J.Mei, and P.Wang, 2021. Full-waveform inversion for full-wavefield imaging: Decades in the making. The Leading Edge40: 324–334.
     [Google Scholar]
  4. Z.Dobo, N.Dowd, D.Blake, C.Botondi, N.Masmoudi, A.Ratcliffe, P.McDonnell, B.Tomsett and T.Sykes, 2024. Characterizing North Sea chalk with High-Resolution Elastic Full-Waveform Inversion. In 85th EAGE Annual Conference & Exhibition, European Association of Geoscientists & Engineers.
     [Google Scholar]
/content/papers/10.3997/2214-4609.2025101318
Loading
Ocean-Bottom Seismic and High-Frequency FWI for Improved Imaging and Depth Prognosis - North Sea Case Study
Conference Proceedings 2025, 1 (2025); https://doi.org/10.3997/2214-4609.2025101318
/content/papers/10.3997/2214-4609.2025101318
/content/papers/10.3997/2214-4609.2025101318
Loading

Data & Media loading...

Most Cited This Month Most Cited RSS feed

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