Calculate the properties of your reservoir fluids with a free, online PVT calculator.
Use the simplest fluid property calculator. And obtain any black oil or dry gas property quickly and easily.
Use the simplest fluid property calculator. And obtain any black oil or dry gas property quickly and easily.








All the dry gas properties depend on the gas z-factor. Therefore, the gas z factor is the most important property to calculate.
Firstly, calculate the bubble point pressure. That's because any other black oil property depends on this property.
Use the most popular correlations to calculate the oil formation volume factor. To clarify, used for saturated reservoirs.
Similarly, the oil density depends on the correlations used for the solution gas-oil ratio and the oil formation volume factor.
The estimation of the total (two-phase) formation volume factor is based on an analytical equation.
An analytical equation is used to calculate the gas formation volume factor. However, this equation relies on the gas z factor.
Secondly, calculate the solution gas-oil ratio. That's because it's directly affecting all the subsequent black oil properties.
For instance, the Bergman-Sutton (2006-2009) correlations are used to calculate the oil viscosity at any reservoir pressure.
The values estimated for oil compressibility at pressures below the bubble point pressure are based on these correlations.
Finally, the Asheim (1989) correlation, for instance, requires values for both the gas and oil formation volume factors.
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