Summary

The best combination of rock properties as hydrocarbon indicators is currently under debate. For many rocks, the increase in saturated bulk modulus is approximately linearly related to the fluid modulus (?K = G(F) * Kf). This ?K can be extracted form seismic data and therefore serve to indicate fluids. For sandstones and clay-rich sandstones, the difference of the bulk and shear modulus (K-µ) may prove best. Combinations of Lame’s constant (l), shear modulus, and density (r), have also been proposed. However, many of these extracted moduli combinations are basically similar in sensitivity to hydrocarbon saturation. Starting with normal reflectivity and slope (A-B) plots, the indicators can be tuned to the properties of the contained pore fluids.

Keywords:
reservoir characterization, internat, de-hua han, upstream oil & gas, fluid indicator, ronny hofmann, colorado school, hydrocarbon indicator, bulk modulus, san antonio
Subjects:
Reservoir Characterization, Seismic processing and interpretation
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2001. Society of Exploration Geophysicists
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