Elastic-wave attenuation in fluid-saturated Berea Sandstone

Abstract

Abstract In a previous publication (O'Hara, 1985), I presented detailed measurements on the attenuation of elastic waves in fluid-saturated Berea sandstone. These measurements were used in a systematic empirical study of the frequency dependence of attenuation as a function of external pressure applied to the sandstone, pore fluid pressure, and the saturated sandstone temperature. Two pore fluids were used in the study: a brine solution and n-heptane. I measured the attenuation of the extensional and torsional rod modes of cylindrical specimens of the sandstone at identical conditions of pressure and temperature for each of the two fluids.