Brief notes on the CREWES Fluid Property Calculator

This Calculator is designed to produce information on pore fluids of interest in petroleum exploration. It is intended for use in connection with seismic fluid substitution operations.

The Gas Phase calculations may be carried in either of two ways. Those using mole fraction input employ the Peng-Robinson equation of state in order to calculate acoustic properties. Those using the gas density ratio as input employ empirical relations described by Batzle and Wang (1992). Viscosity is calculated only by the empirical equation route.

The Liquid Phase and Brine Phase calculations also employ empirical relations based on Batzle and Wang (1992). The Multi-Phase calculations employ simple volume fraction averaging for the density and Woods relation for the bulk modulus. The velocity is calculated from the density and bulk modulus. The viscosity is not calculated.

For questions or suggestions regarding this applet, please contact Chuck crewesinfo@crewes.org.

References

  1. Batzle, M. and Wang, Z., 1992, Seismic properties of pore fluids: Geophysics, 57, 1396-1408.
  2. Peng, D.-Y. and Robinson, D. B., 1976, A New Two-Constant Equation of State: Ind. Eng. Chem., Fundam., 15, 59-64.
Copyright, 2007, CREWES, University of Calgary