Abstract
We present the results of the acoustic spectroscopy of a carbonate sedimentary rock under various saturation degrees. The data for the same sample were obtained both for elasticity and dissipation tensors within the 2‐octaves frequency range. High accuracy of acoustic measurements allowed distinguishing all three stages in the saturation process: condensation, meniscus creation, and filling the pore space with fluid. Both dry rock parameters and the variations observed are in a good agreement with standard granulometry and chemical analysis. Simple estimations of the relative changes in elastic moduli enable clear explanations of these changes observed. The alteration in the frequency dependence of attenuation coefficient allowed proposing reasonable dissipation mechanisms in porous media that can also be useful in the acoustics of ocean sediments.
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