# Hydrostatic Pressure Calculation

Hydrostatic pressure calculation is an important topic in the oil and gas industry, as it is the key parameter in wellbore control. However correct calculation of hydrostatic pressure is sometimes difficult.

In the oil & gas wells, as the fluid density & properties can vary significantly depending on the pressure, temperature and composition of the fluid, therefore accurate measurement & estimation of fluid properties are crucial for precise hydrostatic pressure calculation.

### Correlations

- Oil
- Gas

### Input Parameters

Name | Input Value - Unit | Converted Value | Validity | Link to Calculation Page | |||
---|---|---|---|---|---|---|---|

Gas Specific Gravity (ɣ_{g}) | 0.8 | SG | Average Surface Gas Gravity (ɣ_{g}) | ||||

Oil Density (ρ_{o}) | 46 | deg API | |||||

Start Point True Vertical Depth | 5000 | ft | |||||

Start Point Pressure | 5000 | psi | |||||

Start Point Temperature | 639.67 | °R | |||||

End Point True Vertical Depth | 0 | ft | |||||

End Point Temperature | 519.67 | °R | |||||

Depth Increment Number | 500 | - | |||||

Z-Factor Calculation Method | 3 | ||||||

Pseudo Properties Calculation Method | 2 | ||||||

Pseudo Critical Properties Correction Method | 2 | ||||||

N2 Content | 0 | % | |||||

CO2 Content | 0 | % | |||||

H2S Content | 0 | % | |||||

CALCULATE | |||||||

## Results | |||||||

Correlation | Calculated Value | Warnings | Remarks | ||||

Oil | |||||||

ρgh Method | 4337.784 | psi | |||||

Gas | |||||||

ρgh Method | 4337.726 | psi | |||||

Average ZT Method | 4374.62 | psi | |||||

Cullender-Smith | 4374.62 | psi |