1887

Abstract

Summary

A number of different mechanisms can cause attenuation of propagating seismic waves in a fractured fluid-saturated porous medium, notably geometrical spreading, displacement of pore fluid relative to the solid frame, and transmission losses and scattering. In this study, we examine these attenuation mechanisms using numerical forward simulations and a field example. The numerical methods include a quasi-static upscaling approach and wave propagation simulations. They are based on Biot's equations of poroelasticity and, hence, fractures are modeled as soft, highly porous and permeable features. The field examples include full-waveform sonic data from the Grimsel Test Site underground laboratory situated in a granodioritic rock mass, which exhibits both brittle and ductile deformation structures at various scales.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201901908
2019-06-03
2024-03-29
Loading full text...

Full text loading...

References

  1. Barbosa, N.D, Caspari, E., Rubino, J.G, GreenwoodA., Baron, L., and Holliger, K.
    Estimation of fracture compliance from attenuation and velocity analysis of full-waveform sonic log dataJournal of Geophysical Research: Solid Earth, (under review).
    [Google Scholar]
  2. Caspari, E., Novikov, M., Lisitsa, V., Barbosa, N.D., Quintal, B., Rubino, J.G., and Holliger, K.
    [2019] Attenuation mechanisms in fractured fluid-saturated porous rocks: a numerical modeling study, Geophysical Prospecting, 45, 1365–2478.
    [Google Scholar]
  3. HunzikerJ., FavinoM., CaspariE., QuintalB., RubinoJ., KrauseR. et al.
    [2018] Seismic attenuation and stiffness modulus dispersion in porous rocks containing stochastic fracture networks. Journal of Geophysical Research: Solid Earth, 123, 125–143.
    [Google Scholar]
  4. Krietsch, H., Doetsch, J., Dutler, N., Jalali, M., Gischig, V., Loew, S., and Amann, F.
    [2018] Comprehensive geological dataset for a fractured crystalline rock volume at the Grimsel Test Site. DOI:10.3929/ethz‑b‑000243199.
    https://doi.org/10.3929/ethz-b-000243199 [Google Scholar]
  5. MüllerT.M., GurevichB. and LebedevM.
    [2010] Seismic wave attenuation and dispersion resulting from wave-induced flow in porous rocks –a review. Geophysics, 75, 75A147–75A164.
    [Google Scholar]
  6. Majer, E. L., Myer, L. R., PetersonJr, J. E., Karasaki, K., Long, J.C. S., Martel, S. J., Blümling, P. and Vomvoris, S.
    [1990] Joint seismic, hydrogeological, and geomechanical investigations of a fracture zone in the Grimsel Rock Laboratory, Switzerland. No. LBL-27913; NDC 14, Lawrence Berkeley Lab., CA (USA); Nationale Genossenschaft für die Lagerung Radioaktiver Abfaelle (NAGRA), Baden (Switzerland).
    [Google Scholar]
  7. Rubino, J. G., Guarracino, L., Müller, T. M., & Holliger, K.
    [2013] Do seismic waves sense fracture connectivity?, Geophysical Research Letters, 40, 692–696.
    [Google Scholar]
  8. RubinoJ., CaspariE., MüllerT.M., MilaniM., BarbosaN.D. and HolligerK.
    [2016] Numerical upscaling in 2-D heterogeneous poroelastic rocks: Anisotropic attenuation and dispersion of seismic waves. Journal of Geophysical Research: Solid Earth, 121, 6698–6721.
    [Google Scholar]
  9. Sidler, R., Carcione, J. M. and Holliger, K.
    [2014] A pseudospectral method for the simulation of 3-D ultrasonic and seismic waves in heterogeneous poroelastic borehole environments, Geophysical Journal International, 192, 1134–1151.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201901908
Loading
/content/papers/10.3997/2214-4609.201901908
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