The measurement of thermodynamic properties of the methane liquid mixtures, such as bubble point pressure, solubility, oil formation volume factor, gas formation volume factor and liquid density, were performed for 70 and 90 °C temperatures.
Dry gas PVT properties (e.g., gas-specific gravity, z-factor, gas formation volume factor, gas density, compressibility, and viscosity) are explained in details with practical examples.
Variations of oil formation volume factor and gas formation volume factor are shown in Fig. 5.
The modified BO PVT model relies on the definition of four standard properties: oil formation volume factor (Bo), gas formation volume factor (Bg), solution gas oil ratio (Rs), and volatilized oil gas ratio (Rv).
However, most gas engineering calculations involve the use of gas formation volume factor Bg and gas expansion factor Eg. Both factors are defined by equations.
Gas properties include gas-specific gravity, gas pseudo-critical pressure and temperature, gas viscosity, gas compressibility factor, gas density, gas formation volume factor, and gas compressibility.
This table will be used as a lookup table which contains compressibility factor, gas viscosity, gas formation volume factor and real gas pseudo-pressure.
The PVT functions for MBO simulation and material balance calculations of gas condensate are (condensate gas ratio Rv, solution gas oil ratio Rs, oil formation volume factor Bo, and gas formation volume factor Bg).
Compositional and volumetric effects in black-oil models are captured through the concepts of R s (solution gas-to-oil ratio), R v (volatilized oil-to-gas ratio), reservoir oil formation volume factor (B L ) and reservoir gas formation volume factor (B V ).
In this chapter, the most physical and thermodynamic properties of crude oil (oil density, oil gravity, compressibility, bubble point pressure, solution gas ratio, oil formation volume factor, and viscosity) and gas (gas density, gas compressibility, gas formation volume factor, and viscosity) are defined, and the corresponding correlations are presented.
