1887

Abstract

Summary

Medium to small-scale structural details and heterogeneities of a medium, e.g., faults, pinch-outs, thin lenses, fracturing etc. are of crucial importance for prospecting and development of fractured reservoirs. Such details and heterogeneities are a source of scattered waves (e.g., diffractions), carrying information about scattering objects. In this work, we develop a new diffraction weighting function based on the projected (first) Fresnel zone to enhance diffraction separation and imaging. The difference in the width of the projected (first) Fresnel zone for reflections and diffractions appeared to be very consistent and thus it can be a reliable diffraction indicator. We use the common-reflection-surface (commonly known as CRS) technique to extract the kinematic wavefield attributes and the width of projected Fresnel zone. Applications to a simple gradient as well as complex synthetic data set reveal high potential of the new diffraction weight.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201600988
2016-05-30
2024-03-29
Loading full text...

Full text loading...

References

  1. Billette, F. and Brandsberg-Dahl, S.
    [2005] The 2004 BP Velocity Benchmark. In: In 67th EAGE Conference and Exhibition. Europian Association of Geoscientists and Engineers.
    [Google Scholar]
  2. Dell, S. and Gajewski, D.
    [2011] Common-reflection-surface-based workflow for diffraction imaging. Geophysics, 76(5), S187–S195.
    [Google Scholar]
  3. Hubral, P.
    [1983] Computing true amplitude reflections in a laterally inhomogeneous earth. Geophysics, 48, 1051–1062.
  4. Hubral, P., Schleicher, J., T ygel, M. and Hanitzsch, C.
    [1993] Determination of Fresnel zones from traveltime measurements. Geophysics, 58(5), 703–712.
    [Google Scholar]
  5. Khaidukov, V., Landa, E. and Moser, T.J.
    [2004] Diffraction imaging by focusing-defocusing: An outlook on seismic superresolution. Geophysics, 69, 1478–1490.
    [Google Scholar]
  6. Mann, J.
    [2002] Extensions and Applications of the Common-Reflection-Surface Stack Method. Logos Verlag Berlin.
    [Google Scholar]
  7. Moser, T.J. and Howard, C.B.
    [2008] Diffraction imaging in depth. Geophysical Prospecting, 56, 627–641.
    [Google Scholar]
  8. Schleicher, J., Hubral, P., Tygel, M. and Jaya, M.S.
    [1997] Minimum apertures and Fresnel zones in migration and demigration. Geophysics, 62(1), 183–194.
    [Google Scholar]
  9. Schwarz, B.
    [2015] Moveout and geometry. Ph.D. thesis, University of Hamburg.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201600988
Loading
/content/papers/10.3997/2214-4609.201600988
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