Thermodynamic Properties of Reservoir Fluids¶
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 properties are required for Gas-Water, Multi-Gas, 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 Multi-Gas Solvent models. For Todd- Longstaff, the gas properties define the solvent properties, as the gas is effectively the solvent for this model.
The Multi-component modelling option uses a multi component equation of state (EOS COMP) to define the properties of the non-aqueous phases.
The following EOS cards are available:
See also the following information about databases: