Use this geological calculation for a transparent first-pass interpretation of measured rock, soil, fluid, well, stratigraphic, isotopic, geophysical, or seismic data under an explicitly selected model.

Solution GOR

Solution gas-oil ratio at the bubble point in standard m³ per m³ of oil.

Gas gravity

Gas specific gravity corrected to separator conditions (air = 1).

API gravity

Stock-tank oil gravity in degrees API.

Temperature (K)

Reservoir temperature.

Invert the Vasquez-Beggs solution-GOR correlation to obtain the bubble point pressure; pass the separator-corrected gas gravity. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Pb (Pa)

Bubble point pressure in pascals.

• Petroleum correlations are fluid-, pressure-, temperature-, and region-dependent. PVT sampling, phase behavior, relative permeability, capillary pressure, heterogeneity, aquifer support, well constraints, history match, and units affect forecasts and reserves.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Compare independent measurements and models, retain units and analytical metadata, propagate uncertainty, and validate interpretations against logs, cores, maps, laboratory data, or field observations.

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