1887

Abstract

Summary

We present an alternative and cost-effective approach for 3D salt delineation in frontier exploration areas. Our integrated multi-physics workflow combines the vertical tensor components of FTG data, anomaly enhancement techniques, interactive interpretive 2D modeling and 3D forward modeling for salt mapping. The benefit of the proposed approach is the ability to build a first-order 3D salt distribution over a wide area to assess salt volumes. The method was applied to a large FTG survey acquired in the Nordkapp Basin, Norway. Finally, the integrated multi-physics solution can be exploited for 1) Defining the sediment vs. salt ratio in salt basins, 2) Delineating areas of particular interest in terms of exploration prospectivity, 3) Identifying areas of broad salt overhangs, and 4) Ranking salt volumes for more refined 3D seismic acquisitions.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201700560
2017-06-12
2024-04-18
Loading full text...

Full text loading...

References

  1. Ceci, F., LovatiniA., MasnaghettiL., Hokstad, K. and Antonsdottir, V.
    [2012] Multi Measurement Imaging Using Seismic CSEM MMT and FTG Data for Salt Dome Evaluation in the Nordkapp Basin. 74th EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
  2. CooperG.R.J.
    [2012] A gradient-ratio method for the semi-automatic interpretation of gravity map data sets. Geophysical Prospecting, 60, 995–1000, doi: 10.1111/j.1365–2478.2011.01031.x.
    https://doi.org/10.1111/j.1365–2478.2011.01031.x [Google Scholar]
  3. Dickinson, J.L., Murphy, C.A., and Robinson, J.W.
    [2010] Analysing Full Tensor Gravity Data with Intuitive Imaging Techniques. 72nd EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
  4. Mantovani, M., Hokstad, K., Trezzi, S., Navaza, M.L., Duffaut, K., Wiik, T., Lovatini, A. and Guerra, I.
    [2014] Cooperative, Structural and Grid-based Simultaneous Joint Inversion for Salt Base and Presalt Imaging. 76th EAGE Conference & Exhibition, Extended Abstracts.
    [Google Scholar]
  5. Miller, H. G., and SinghV.
    [1994] Potential field tilt - A new concept for location of potential field sources. Journal of Applied Geophysics, 32, 213–217.
    [Google Scholar]
  6. Salem, A., Williams, S., Fairhead, J. D., Ravat, D., and Smith, R.
    [2007] Tilt-depth method: A simple depth estimation method using first-order magnetic derivatives. The Leading Edge, 26, 1502–1505.
    [Google Scholar]
  7. Spector, A., and F. S.Grant
    , Statistical models for interpreting aeromagnetic data [1970] Geophysics, 35, 293–302, doi: 10.1190/1.1440092.
    https://doi.org/10.1190/1.1440092 [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201700560
Loading
/content/papers/10.3997/2214-4609.201700560
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