![hampson russell fluid substitution hampson russell fluid substitution](https://ars.els-cdn.com/content/image/1-s2.0-S1110062116300563-gr8.jpg)
GPYSA7 0016-8033 Geophysics Abstract Web of Science Google Scholar H., 1989, Amplitude‐versus‐offset variations in gas sands: Geophysics, 54, 680–688. W., 1976, Scattering of elastic wave from depth‐dependent inhomogeneities: Geophysics, 41, 441–458. J., 1984, Plane‐wave reflection coefficients for gas sands at non‐normal angles of incidence: Geophysics, 49, 1637–1648. Murphy, W., Reischer, A., and Hsu, K., 1993, Modulus decomposition of compressional and shear velocities in sand bodies: Geophysics, 58, 227–239.
![hampson russell fluid substitution hampson russell fluid substitution](https://image1.slideserve.com/3208053/seismic-lithology-estimation1-l.jpg)
Mavko, G., Mukerji, T., and Dvorkin, J., The rock physics handbook-Tools for seismic analysis in porous media, Cambridge Univ. Krief, M., Garat, J., Stellingwerff, J., and Ventre, J., 1990, A petrophysical interpretation using the velocities of P and S waves: The Log Analyst, 31, no. J., 2001, Seismic amplitude interpretation: Short Soc. Hedlin, K., 2000, Pore space modulus and extraction using AVO: 70th Ann. Gueguen, Y., and Palciauskas, P., Introduction to the physics of rocks, Princeton Univ.
#HAMPSON RUSSELL FLUID SUBSTITUTION VERIFICATION#
P., 1992, Shear‐wave estimation in porous rocks: Theoretical formulation, preliminary verification and applications: Geophys.
![hampson russell fluid substitution hampson russell fluid substitution](https://d3i71xaburhd42.cloudfront.net/64365192045309b9de62d1b97b200718f4cd41fb/111-Figure5.22-1.png)
Goodway, W., Chen, T., and Downton, J., 1997, Improved AVO fluid detection and lithology discrimination using Lame petrophysical parameters: 67th Ann. Vierteljahrsschrift der Naturforschenden Gesellschaft in Zurich Google Scholar Gassmann, F., 1951, Uber die Elastizitat poroser Medien: Vierteljahrsschrift der Naturforschenden Gesellschaft in Zurich, 96, 1–23. W., 1993, A closer look at hydrocarbon indicators 63rd Ann. Fatti, J., Smith, G., Vail, P., Strauss, P., and Levitt, P., 1994, Detection of gas in sandstone reservoirs using AVO analysis: A 3‐D seismic case history using the geostack technique: Geophysics, 59, 1362–1376. N., 1974, Effect of water saturation on seismic reflectivity of sand reservoirs encased in shale: Geophysics, 39, 759–769. J., 1998, Framework for AVO gradient and intercept interpretation: Geophysics, 63, 948–956. L., 1985, Relationships between compressional‐wave and shear‐wave velocities in clastic silicate rocks: Geophysics, 50, 571–581. S., and Korringa, J., 1975, On the dependence of the elastic properties of a porous rock on the compressibility of the pore fluid: Geophysics, 40, 608–616. A., 1941, General theory of three‐dimensional consolidation: J. Batzle, M., and Wang, Z., 1992, Seismic properties of fluids: Geophysics, 57, 1396–1408.
![hampson russell fluid substitution hampson russell fluid substitution](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs42452-020-03855-z/MediaObjects/42452_2020_3855_Fig11_HTML.png)
G., Quantitative seismology: Theory and methods, W. Finally, a shallow gas‐sand example from Alberta and a well‐log example from eastern Canada are shown to illustrate the technique. AVO inversion results are then incorporated to show how this method can be implemented using prestack seismic data. Numerical and well‐log examples illustrate the applicability of this approach. The formulation can be expressed with either the Lamé constants and density, or the bulk and shear moduli and density. This formula provides a more sensitive discriminator of the pore‐fluid saturant than the acoustic impedance and is especially applicable in hard‐rock environments. In essence, the two impedances are transformed so that they better differentiate between the fluid and rock matrix of the porous medium. From both Biot and Gassmann theories for porous, fluid‐saturated rocks, a general formula is first derived for fluid‐factor discrimination given that both the P and S impedances are available. This analysis draws together basic rock physics, amplitude variations with offset (AVO), and seismic amplitude inversion to discuss how fluid‐factor discrimination can be performed using prestack seismic data.