# Difference between revisions of "Dictionary:Normal pressure"

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Formation fluid pressure equal to <b>hydrostatic pressure</b>, the pressure produced by a column of formation fluid extending to the surface. Hydrostatic pressure is about 0.465 psi/ft (1.05×10<sup>4</sup> Pa/m, equivalent to 9.2 lb/gallon mud); it would be 0.433 psi/ft for pure water. Fluid pressure greater than normal is called <b>overpressure</b>, that lower than normal, <b>underpressure</b>. See Figure [[Special:MyLanguage/Dictionary:Fig_P-12|P-12]]. | Formation fluid pressure equal to <b>hydrostatic pressure</b>, the pressure produced by a column of formation fluid extending to the surface. Hydrostatic pressure is about 0.465 psi/ft (1.05×10<sup>4</sup> Pa/m, equivalent to 9.2 lb/gallon mud); it would be 0.433 psi/ft for pure water. Fluid pressure greater than normal is called <b>overpressure</b>, that lower than normal, <b>underpressure</b>. See Figure [[Special:MyLanguage/Dictionary:Fig_P-12|P-12]]. | ||

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## Revision as of 11:05, 10 April 2019

Formation fluid pressure equal to **hydrostatic pressure**, the pressure produced by a column of formation fluid extending to the surface. Hydrostatic pressure is about 0.465 psi/ft (1.05×10^{4} Pa/m, equivalent to 9.2 lb/gallon mud); it would be 0.433 psi/ft for pure water. Fluid pressure greater than normal is called **overpressure**, that lower than normal, **underpressure**. See Figure P-12.