Petroleum & Drilling

Intermediate

Hydrostatic Pressure (Field)

Bottom-hole pressure from mud weight and depth in oilfield units.

Formula

P = 0.052 \times MW \times TVD

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Variables

PPressure (psi)

MWMud weight (ppg)

TVDTrue vertical depth (ft)

Example

MW=10 ppg, TVD=10000 ft: P = 5200 psi

Did You Know?

The magic 0.052 converts pounds-per-gallon and feet into psi — every drilling engineer knows it by heart.

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