1887

Abstract

Summary

“Model building and depth imaging with PS converted-wave data is more complicated than with P-wave data alone. We must determine appropriate compressional and shear velocities such that PP and PS sections match, and accuracy of anisotropic parameters is crucial to minimize residual moveout on both data types. Fortunately, recent technological developments, notably joint PP-PS tomography, allow us to produce excellent PS depth-imaged results with reasonable turnaround time.

In this case study we describe the application of PP-PS model building and depth imaging to an OBC seismic survey. The area is characterized by complex structure combined with large velocity contrasts, both of which cause problems for PS model building. A state-of-the-art workflow was applied that included joint PP-PS tomography, maximum use of well data, and minimal interpretation. High-quality PP and PS results were produced in a reasonable timeframe.”

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201800635
2018-06-11
2024-03-29
Loading full text...

Full text loading...

References

  1. Boiero, D., Wiarda, E., and Vermeer, P.
    [2013] Surface- and guided-wave inversion for near-surface modeling in land and shallow marine seismic data. The Leading Edge, 32(6), 638–646.
    [Google Scholar]
  2. Hale, D.
    [2013] Dynamic warping of seismic images. Geophysics, 78(2), S105–S115.
    [Google Scholar]
  3. [2010] Image-guided 3D interpolation of borehole data. 70th Annual International Meeting, SEG Expanded Abstracts, 1266–1270.
    [Google Scholar]
  4. Mathewson, J., Woodward, M., NicholsD., Xu, C. and Leone, C.
    [2013] Joint PP/PS tomography with floating event constraints. 83rd Annual International Meeting, SEG Expanded Abstracts, 1649–1653.
    [Google Scholar]
  5. Thomsen, L.
    [1986] Weak elastic anisotropy. Geophysics, 51(10), 1954–1966.
    [Google Scholar]
  6. Woodward, M., Nichols, D., Zdraveva, O., Whitfield, P., and Johns, T.
    [2008] A decade of tomography. Geophysics, 73(5), VE5–VE11.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201800635
Loading
/content/papers/10.3997/2214-4609.201800635
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