Downhole Performance

Optimal hydrostatic, temperature, depth and wellbore pressure for your well + fluid configuration.

AppendixChartsFile.pdfExpires

Unit system

Switches all input labels and computed outputs.

Mode

Mud weight

Liquid viscosity

Injection temperature

Total depth

Tubing ID

Tubing OD

Surface temperature

Geothermal gradient

Pump rate

Surface pressure

Choke pressure

Pump time

Gas column above interface

Gas gradient (psi/ft)Gas-liquid interface depth (ft)

When set, depths above the interface use the gas gradient instead of mud weight.

Multi-zone mud profile (optional)

No zones — single mud weight is used throughout. Add zones to override density over depth intervals.

Formation / pore pressure

Formation pressure (psi)Pore-pressure gradient (psi/ft)

Used to compute overbalance vs effective BHP. Explicit formation pressure overrides the gradient.

Annular friction loss

Friction loss (psi)

Subtracted from BHFP for circulating conditions.

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