Thermodynamic Properties of Reservoir FluidsΒΆ

The thermodynamic properties such as density, enthalpy and viscosity of the reservoir fluid phases can be computed in different ways:

  • by the mean of analytical models

  • by external databases given in the format accepted by PFLOTRAN

  • by PVT table formats commonly used in reservoir engineering

The input keyword to enter the properties of a phase is EOS, which stands for Equation of State, followed by the name of the phase.

Water properties are required for all flow models (Gas-Water, Oil-Water, Black Oil, Todd-Longstaff, Solvent, Oil-Water).

Gas properties are required for Gas-Water, Black Oil , Todd-Longstaff and Solvent models.

Oil properties are required for Oil-Water, Black Oil, Todd-Longstaff and Solvent models.

The properties of the solvent component are required for the Solvent model only. For Todd- Longstaff, the gas properties define the solvent properties, as the gas is effectively the solvent for this model.

The following EOS cards are available:

See also the following information about databases: