1887

Abstract

Summary

To investigate the role of adsorption on elastic weakening, an experimental protocol is designed to measure elastic properties at standard T-P conditions under varying room Relative Humidity. A large dataset of clean limestone and sandstone samples is measured as to determine global trends.

It is shown that limestones are not affected by this adsorption phenomenon. On the reverse, sandstones show large elastic weakening from water adsorption. This weakening increases with the sample porosity and affects similarly P- and S-wave velocities.

Using the JKR theory, the measurements are understood in terms of surface energy variations from water adsorption. An existing model from provides a consistent interpretation of the results.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.20141025
2014-06-16
2020-04-04
Loading full text...

Full text loading...

References

  1. Adam, L., Batzle, M. and Brevik, I.
    [2006] Gassmann’s fluid substitution and shear modulus variability in carbonates at laboratory seismic and ultrasonic frequencies. Geophysics, 71, F173–F183.
    [Google Scholar]
  2. Assefa, S., McCann, C. and Sothcott, J.
    [2003] Velocities of compressional and shear waves in limestones. Geophysical Prospecting, 51, 1–13.
    [Google Scholar]
  3. Baechle, G., Weger, R., Eberli, G., Massaferro, J. and Sun, Y.
    [2005] Changes of shear moduli in carbonate rocks: Implications for Gassmann applicability. The Leading Edge, 24, 507–510.
    [Google Scholar]
  4. Baud, P., Klein, E. and Wong, T.
    [2004] Compaction localization in porous sandstones: spatial evolution of damage and acoustic emission activity. Journal of Structural Geology, 26, 603–624.
    [Google Scholar]
  5. Bourbié, T. and Zinszner, B.
    [1985] Hydraulic and acoustic properties as a function of porosity in Fontainebleau sandstone. Journal of Geophysical Research: Solid Earth, 90, 11524–11532.
    [Google Scholar]
  6. Fortin, J., Guéguen, Y. and Schubnel, A.
    [2007] Effects of pore collapse and grain crushing on ultrasonic velocities and Vp/Vs. Journal of Geophysical Research, 112.
    [Google Scholar]
  7. Johnson, K., Kendall, K. and Roberts, A.
    [1971] Surface energy and the contact of elastic solids. Proceedings of the Royal Society of London, A, 324, 301–313.
    [Google Scholar]
  8. Murphy, W., Winkler, K. and Kleinberg, R.
    [1984] Frame modulus reduction in sedimentary rocks: The effect of adsorption on grain contacts. Geophysical Research Letters, 11, 805–808.
    [Google Scholar]
  9. Winkler, K.W. and Murphy, W.F.III
    [1995] Acoustic velocity and attenuation in porous rocks. Rock Physics and Phase Relations, A Handbook of Physical Constants, AGU Reference Shelf 3, American Geophysical Union.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20141025
Loading
/content/papers/10.3997/2214-4609.20141025
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