1887

Abstract

Summary

Layer Migration will be introduced as an inversion method for gravity gradient data. An initial model of the source mass is iteratively improved using the output of a 3D under surface image. The technique can be considered a hybrid between rapid imaging methods and more rigorous parametric inversion.

A key aspect of Layer Migration is that it exploits the non-uniqueness property of gravity inversion solutions so as to be able to test the model at multiple depths without recalculating the under surface image.

Results will be shown from application of this method to the task of basement imaging from an airborne FTG (Full Tensor Gravity Gradiometer) survey acquired over the Tatau-Half Grabens area, offshore Sarawak, Malaysia.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201901493
2019-06-03
2020-04-08
Loading full text...

Full text loading...

References

  1. Brewster, James
    . “Source body migration imaging of the SEAM salt body model.” In 2017 SEG International Exposition and Annual Meeting. Society of Exploration Geophysicists, 2017.
    [Google Scholar]
  2. Jabbar, S. F., DSAmin Suyitno, ABAzwa Jannah, B.Khairul Amri, J.Basiron, A.Ayub, and M.Madon
    . “The NNG Discovery: A New Oil Play in the Pre-Cycle I Basement, Offshore Sarawak.” APGCE 2015 (2015).
    [Google Scholar]
  3. Li, Yaoguo, and Douglas W.Oldenburg
    . "3-D inversion of gravity data." Geophysics63, no. 1 (1998): 109–119.
    [Google Scholar]
  4. Nettleton, Lewis Lomax
    . Geophysical prospecting for oil. McGraw-Hill Book Company, Inc.; New York, 1940.
    [Google Scholar]
  5. Oldenburg, Douglas W., and YaoguoLi
    . "Inversion for applied geophysics: A tutorial." Near-surface geophysics: SEG (2005): 89–150.
    [Google Scholar]
  6. Skeels, Dorr Covell
    . "Ambiguity in gravity interpretation." Geophysics12, no. 1 (1947): 43–56.
    [Google Scholar]
  7. Wan, Le, and Michael S.Zhdanov
    . "Iterative migration of gravity and gravity gradiometry data." SEG Technical Program Expanded Abstracts 2013 (2013): 1211–1215.
    [Google Scholar]
  8. Zhdanov, Michael S., XiaojunLiu, Glenn A.Wilson, and LeWan
    . "Potential field migration for rapid imaging of gravity gradiometry data." Geophysical Prospecting59, no. 6 (2011): 1052–1071.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201901493
Loading
/content/papers/10.3997/2214-4609.201901493
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