1887

Abstract

Summary

Full waveform inversion (FWI) produces high-resolution seismic velocity models, which improve seismic imaging. Where FWI uses the full wavefield, i.e. transmitted and reflected data, there is a potential improvement in the integration with amplitude seismic data; these models can fill the spectral gap between zero and the lowest useable frequency of amplitude seismic data to create an absolute inversion product. The question arises: what seismic frequency should be used to create these high-resolution FWI velocity models to cost-effectively estimate absolute elastic properties from seismic data? Analysis exploring this commercial dilemma is presented by mean of a case study in the Norwegian Sea where shallow geological bodies, in this case siliceous pelagic sediments (ooze), present significant imaging challenges. The study shows how these imaging complexities have been overcome by the use of broadband seismic integrated with FWI velocity model building and high-end imaging. Iterations reveal that there is cost-benefit sweet-spot for how much overlap is necessary between low frequency models from velocity and broadband seismic amplitude data, and therefore how high an upper frequency limit for the seismic data that creates the FWI model should be.

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/content/papers/10.3997/2214-4609.201901574
2019-06-03
2024-03-29
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References

  1. Bryn, P., Berg, K., Forsberg, C.F., Solheim, A. and Kvalstad, T.J
    . [2005] Explaining the Storegga Slide. Marine and Petroleum Geology, 22, 11–19.
    [Google Scholar]
  2. Eidvin, T., Brekke, H., Riis, F. and Renshaw, D.K
    . [1998] Cenozoic stratigraphy of the Norwegian Sea continental shelf, 64°N-68°N. Norsk Geologisk Tidsskrift, 78, 125–151.
    [Google Scholar]
  3. Feuilleaubois, L.O., CharoingV., Maioli, A. and Reiser, C
    . [2017] Utilizing a novel quantitative interpretation workflow to derisk shallow hydrocarbon prospects – a Barents Sea case study. First Break volume 35 (3), 85–92.
    [Google Scholar]
  4. Kneller, E.
    , Peiro, 2018, Integration of broadband seismic data into reservoir characterization workflows: A case study from the Campos Basin, Brazil. Interpretation, 6 (1), T145–T161.
    [Google Scholar]
  5. Lafet, Y., L.Michel, R.Sablon, D.Russier and R.Hanumantha
    [2012] Variable depth streamer — Benefits for rock property inversion. 74th EAGE Conference and Exhibition, Extended Abstracts, J07 Naumann, S., Korsmo, Ø. And Rønholt, G. [2018] Solving imaging challenges in a deep-water, complex ooze regime: a case study from the Outer Vøring area, Norwegian Sea: First Break, 36 (6), 51–56.
    [Google Scholar]
  6. Özdemir, H
    . [2009] Unbiased deterministic seismic inversion: more seismic, less model. First Break, 27 (11), 43–50.
    [Google Scholar]
  7. Ramos-Martinez, J., Crawley, S., Zou, K., Valenciano, A.A., Qiu, L. and CheminguiN.
    [2016] A robust gradient for long wavelength FWI updates, 77th EAGE Conference & Exhibition, Extended Abstracts, Th SRS203.
    [Google Scholar]
  8. Reiser, C., Bird, T., Engelmark, F., Anderson, E. and Balabekov, Y
    . [2012] Value of broadband seismic for interpretation, reservoir characterization and quantitative interpretation workflows. First Break, 30 (9), 67–75.
    [Google Scholar]
  9. Sirgue, L., Barkved, O.I., Dellinger, J., Etgen, J., Albertin, U. and Kommedal, J.H
    . [2010] Full waveform inversion: the next leap forward in imaging at Valhall, First Break, 28 (4), 65–70.
    [Google Scholar]
  10. Whitmore, N.D. and Crawley, S
    . [2012] Application of RTM inverse scattering imaging conditions, 82nd SEG International Meeting, Expanded Abstracts.
    [Google Scholar]
  11. Zabihi NaeiniE. and Sams, M
    . [2017] Accuracy of Wavelets, Seismic Inversion and Thin Bed Resolution, 79th EAGE Conference & Exhibition2017.
    [Google Scholar]
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