Abstract
Ultrasonic measurements of P-wave and S-wave velocity and quality factors (Qp, Qs) have been obtained from 9 sandstones, over a wide range of water saturations and confining pressures. The sandstones display a wide rang of porosity and permeability. Saturation state was varied in the sandstones by equilibrating the cores with various capillary pressures. Confining pressure varied from 5MPa to 60MPa. The values of the measured acoustic parameters were normalised to the fully saturated values to allow inter-sample comparison.
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