References

• Abramowitz, M., 1972, Elementary analytical methods, in Handbook of mathematical functions, Abramowitz, M. and Stegun, I. A., Eds. Dover Publications, Inc., New York, 10-11.

• F. M. Orr, Jr., 1992, private communication.

• Rossini, F. D., Pitzer, K. S., Arnet, R. L., Braun, R. M., and Pimentel, G. C., 1953, Selected values of physical and thermodynamic properties of hydrocarbons and related compounds: Carnegie Press.

• Wang, Z., 1988, Wave velocities in hydrocarbons and hydrocarbon saturated rocks -- with applications to EOR monitoring: Ph.D. thesis, Stanford University, p.168.

• Wang, Z., and Nur, A., 1991, Ultrasonic velocities in pure hydrocarbons and mixtures: J. Acoust.Soc.Am., 89, 2725-2730.

• Weast, R. C., and Grasselli, J. G., 1989, Handbook of data on organic compounds, vol.III: CRC Press.

• Wood, A. W., 1955, A textbook of sound: G. Bell and Sons Ltd., London, 359-361.

• Wyllie, M. R. J., Gregory, A. R., and Gardner, G. H. F., 1957, An experimental investigation of factors affecting elastic wave velocities in porous media: Geophysics, 23, 459-493.

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Table 1. Measured ultrasonic velocities (Wang and Nur, 1991) and densities (Rossini et al, 1953; Weast and Grasselli, 1989) at 20$^\circ$ C and computed bulk moduli of various hydrocarbons.

$$0.15in] \begin{tabular} {\vert c\vert c\vert c\vert c\vert}... ..._{16}$\space & 1.402 & 0.8349 & 1.641 \hline\hline\end{tabular}$$

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Table 2. Measured ultrasonic velocities (Wang and Nur, 1991) for a sequence of binary hydrocarbon mixtures at 20$^\circ$ C compared to velocities computed using Wood's formula, the time average equation, and a simple mixing rule. Data required for computing Wood's formula may be found in Table 1. The formula for the 1-decene/1-octadecene hydrocarbon mixture is (C₁₀H₂₀)_x(C₁₈H₃₆)_(1-x), where x is the volume fraction of 1-decene. Units of all velocities are km/s.

$$0.15in] \begin{tabular} {\vert l\vert c\vert c\vert c\vert ... ... 1.00 & 1.247 & 1.247 & 1.247 & 1.247 \hline\hline\end{tabular}$$

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Table 3. Measured ultrasonic velocities (Wang and Nur, 1991) of six multicomponent hydrocarbon mixtures at 20$^\circ$ C compared to velocities computed using Wood's formula, the time average equation, and a simple mixing rule. Data required for computing Wood's estimate may be found in Table 1. Units of all velocities are km/s.

$$0.15in] \begin{tabular} {\vert l\vert c\vert c\vert c\vert ... ....06}$ & 1.309 & 1.308 & 1.312 & 1.314 \hline\hline\end{tabular}$$