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.

Flow rate

Circulating flow rate in cubic metres per second.

Pipe ID

Pipe internal diameter in metres.

Length

Pipe length in metres.

Plastic viscosity

Plastic viscosity in pascal seconds.

Yield point

Yield point in pascals.

Estimate laminar frictional pressure loss in drill pipe with the Bingham plastic pipe-flow equation. 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]

Velocity

Mean fluid velocity in metres per second.

Pressure loss

Frictional pressure loss over the pipe length in pascals.

• 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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