Moduli dispersion and attenuation in limestones in the laboratory
نویسنده
چکیده
There is growing interest in using seismic attenuation for reservoir characterization. We measure limestone samples in the laboratory to analyze attenuation and elastic moduli as a function of frequency from 3 Hz to ultrasonic. We observe that there is a positive correlation between bulk modulus dispersion and permeability. We also measure different modes of attenuation and find that the attenuation in our fullysaturated samples is mostly due to bulk compressibility losses. We observe that attenuation significantly increases when brine replaces a light hydrocarbon.
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