Effects of pore fluids in the subsurface on ultrasonic wave propagation

Abstract

is an equal opportunity employer. I DISCLAIMERPortions of this document may be illegible in electronic image products. Images are produced from the best available original document. The last study concentrates on the wettability of the grains and its effect on 3 elastic wave propagation and electrical resistivity. Experiments have been performed in both initally water-saturated and initally n-dodecane-saturated media, for water-wetting and n-dodecane-wetting sand, as a function of n-dodecane saturation. Changes in the wettability of a n-dodecane-water-mineral system affect the effective amplitude of the P-wave, the capability of measuring S-waves and the electrical resistivity.

A survey of the geophysical properties of chlorinated DNAPLs

“…Acoustic n-dodecane 90 kHz Seifert (1998) Acoustic Silicone oil 900 kHz Castor oil n-dodecane Seifert et al (1999) Acoustic Silicone oil 900 kHz Persson and Berndtsson (2002) Dielectric SFSO 10 MHz-800 MHz Francisca and Rinaldi (2003) Dielectric Paraffin 20 MHz- 1.3 GHz Lubricant oil Geller et al (2003) Acoustic TCE 500 kHz Toluene Ajo-Franklin et al…”

“…Reductions in Vp of up to 40.3% were observed for sands fully saturated with freon-113. Seifert (1998) and Seifert et al (1999) performed a similar set of measurements with a focus on varying fluid viscosity and wetting properties. P-wave velocity and attenuation were measured while saturating with two different grades of silicone oil (10 and 100 cs), castor oil, and n-dodecane.…”