1887

Abstract

Summary

The most common method used worldwide for reservoir characterization is seismic reflection, which is sensible to variations in lithology and fluid content. However, the seismic signals are also affected by pressure, pore geometry and bedding shape. Grain size, especially in unconsolidated sediments, can also influence the propagation of these seismic signals, once it can determine the pore size distribution, porosity, wave scattering and diffraction. This paper presents a physical modeling study of the variation in seismic responses due to differences in grain size. The experiments were conducted using ultrasonic signals to perform seismic surveys on a Plexiglass block with a wedge-type cavity to simulate a reservoir. Those surveys were conducted with the reservoir filled with four different contents, one containing only the fluid phase and the other three with glass beads representing an unconsolidated medium characterized by three different grain sizes saturated with the same fluid phase. The results showed how the seismic images, velocities and attenuation can be affected by the grain size.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201413342
2015-06-01
2024-03-28
Loading full text...

Full text loading...

References

  1. Ebrom, D.A. and MacDonaldsJA.
    [1994] Seismic Physical Modeling. Geophysics Reprint Series, 15. Society of Exploration Geophysicists.
    [Google Scholar]
  2. Hamilton, E.L.
    [1972] Compressional-wave attenuation in marine sediment. Geophysics, 37, 620–646.
    [Google Scholar]
  3. Mavko, G., Mukerji, T. and Dvorkin, J.
    [2009] The Rock Physics Handbook. 2nd Edition. Cambridge University Press.
    [Google Scholar]
  4. McCann, C. and McCann, D.M.
    [1969] The attenuation of compressional waves in marine sediments. Geophysics, 34(6) 882–892.
    [Google Scholar]
  5. Park, E., Lee, K., Seong, W. and Park, J.
    [2009] Sound Speed and Attenuation Measurements in Satured Glass Beads. International Offshore and Polar Engineering Conference, 2009.
    [Google Scholar]
  6. Pinson, L.J.W., Henstock, T.J., Dix, J.K. and Bull, J.M.
    [2008] Estimating quality factor and mean grain size of sediments from high-resolution marine seismic data. Geophysics, 73(4), G19–G28. DOI: 10.1190/1.2937171.
    https://doi.org/10.1190/1.2937171 [Google Scholar]
  7. Yilmaz, O.
    [1987] Seismic Data Processing. Society of Exploration Geophysics, Tulsa.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201413342
Loading
/content/papers/10.3997/2214-4609.201413342
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