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Calculate the properties of petroleum reservoir fluids with a reliable, simple PVT calculator. Use the Vazquez-Beggs solution gas-oil ratio calculator.

Solution Gas-Oil Ratio

Vazquez-Beggs (1980)

First-stage separator gas specific gravity

Stock-tank oil specific gravity

Solution gas-oil ratio at bubble point pressure

N.B. The Vazquez-Beggs (1980) correlations are used to calculate the oil bubble point pressure and the solution gas-oil ratio.

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Fluid Property Behavior

Solution Gas-Oil Ratio

In this section, I would like to make sure that you can easily describe the behavior of your solution gas-oil ratio at any reservoir pressure. Therefore, I will give you brief technical notes by answering three questions.

Why the solution gas-oil ratio is maximum at bubble point pressure?

At pressures above the bubble point pressure, the oil phase is saturated with the maximum amount of soluble gas. As a result, the solution gas-oil ratio remains constant. On the other hand, when the pressure decreases below the bubble point pressure, more gas is liberating from the liquid phase, leaving the oil with less gas in solution. Actually, almost all the black oil properties respond differently to the decrease in reservoir pressure.

What are the PVT properties that are affecting the value estimated for the solution gas-oil ratio?

The solution gas-oil ratio is strongly dependent on the value estimated for the bubble point pressure.

What are the PVT properties that depend on the value estimated for the solution gas-oil ratio?

The oil formation volume factor, the oil viscosity, the oil density, and the oil compressibility are all strongly dependent on the value estimated for the solution gas-oil ratio.

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Gas Z Compressibility Factor

Gas Formation Volume Factor

Oil Bubble Point Pressure

Solution Gas-Oil Ratio

Oil Formation Volume Factor

Oil Viscosity

Oil Density

Oil Compressibility

Total Formation Volume Factor

Gas-Oil Surface Tension

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Solution Gas-Oil Ratio

Fluid Property Behavior

Solution Gas-Oil Ratio

Calculate more PVT properties

Gas Z Compressibility Factor

Gas Formation Volume Factor

Oil Bubble Point Pressure

Solution Gas-Oil Ratio

Oil Formation Volume Factor

Oil Viscosity

Oil Density

Oil Compressibility

Total Formation Volume Factor

Gas-Oil Surface Tension

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