1887

Abstract

Summary

In this study, we investigate the influence of the creep phenomenon on the drifts of the dynamic moduli of three sedimentary rocks represented by Savonnieres limestone, Berea sandstone and Eagle Ford shale. We report the results of the low-frequency measurements of elastic moduli using the forced-oscillation method, which were carried out for 120 hours on three room-dry samples at frequencies of 0.1 Hz to 120 Hz under a uniaxial pressure of 10 MPa. We found that all moduli reduce with time, with the largest changes occurring in Eagle Ford shale, where the bulk and shear moduli decrease by 12% and 8%, respectively. We also found that the drifts of the bulk and shear moduli measured 24–30 hours after commencing the experiments do not exceed 2% for all samples.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201901033
2019-06-03
2024-04-18
Loading full text...

Full text loading...

References

  1. Adelinet, M., Fortin, J., Gueguen, Y., Schubnel, A. and Geoffroy, L.
    [2010] Frequency and fluid effects on elastic properties of basalt: Experimental investigations. Geophysical Research Letters, 37, L02303.
    [Google Scholar]
  2. Batzle, M. L., Han, D.-H. and Hofmann, R.
    [2006] Fluid mobility and frequency-dependent seismic velocity - Direct measurements. Geophysics, 71, N1–N9.
    [Google Scholar]
  3. Mikhaltsevitch, V., Lebedev, M. and Gurevich, B.
    [2014] A laboratory study of low-frequency wave dispersion and attenuation in water-saturated sandstones. The Leading Edge, 33, 616–622.
    [Google Scholar]
  4. Szewczyk, D., Bauer, A. and Holt, R. M.
    [2016] A new laboratory apparatus for the measurement of seismic dispersion under deviatoric stress conditions. Geophysical Prospecting, 64, 789–798.
    [Google Scholar]
  5. Tisato, N., and Madonna, C.
    [2012] Attenuation at low seismic frequencies in partially saturated rocks: Measurements and description of a new apparatus. Journal of Applied Geophysics, 86, 44–53.
    [Google Scholar]
  6. Takei, Y., Fujisawa, K. and McCarthy, C.
    [2011] Experimental study of attenuation and dispersion over a broad frequency range: 1. The apparatus. Journal of Geophysical Research, 116, B09204.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201901033
Loading
/content/papers/10.3997/2214-4609.201901033
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