Article,

The ratio of the PP to the SS-reflection coefficient as a possible future method to estimate oil and gas reservoirs

, and .
Geophysical Prospecting, 29 (4): 533--540 (August 1981)
DOI: 10.1111/j.1365-2478.1981.tb00693.x

Abstract

On the basis of known relationships between various elastic moduli and porosity in a porous medium and of various parameters from well-logs, the reflection coefficient for normal incidence of P-waves is compared to that of S-waves. If pores contain gas, the reflection coefficient in S is much smaller than that of P but shows large differences for different gas concentration in one of the two layers while the reflection coefficient in P is insensitive to the gas concentration. It is found that the ratio of the two reflection coefficients provides a powerful tool for discriminating between layers of different degrees of gas concentration and for the extension of the sensitivity of the bright-spot technique to greater depths.

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