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.

Upstream pressure

Upstream wellhead pressure in kilopascals (downstream assumed atmospheric).

GLR

Producing gas-liquid ratio in standard cubic metres per cubic metre.

Choke bore

Choke bore diameter in millimetres.

Estimate the multiphase liquid flow rate through a production choke with the Gilbert (1954) correlation given upstream wellhead pressure, gas-liquid ratio and choke bore. 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]

Liquid rate

Liquid flow rate through the choke in cubic metres per day.

• Drilling and casing calculations depend on well geometry, fluid rheology and density, temperature, pressure, surge and swab, kick scenario, cement placement, wear, connection strength, transient hydraulics, and operator standards.
• 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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