- 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.

0.9

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

0.9

Table 2. Measured ultrasonic velocities (Wang and Nur, 1991) for a
sequence of binary
hydrocarbon mixtures at 20 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
(*C*_{10}H_{20})_{x}(*C*_{18}H_{36})_{(1-x)}, where *x* is the volume
fraction of 1-decene. Units of all velocities are km/s.

1.5

Table 3. Measured ultrasonic velocities (Wang and Nur, 1991) of six
multicomponent
hydrocarbon mixtures at 20 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.

11/17/1997