Accumulator precharge pressure
Input(s)
\(\mathrm{V}_{\mathrm{a}}\): Total Accumulator Volume \((\mathrm{bbl})\)
\(\mathrm{P}_{\mathrm{S}}\): Starting Accumulator Pressure (psi)
\(\mathrm{V}_{\mathrm{r}}\): Volume of Fluid Removed (bbl)
\(\mathrm{P}_{\mathrm{f}}\): Final Accumulator Pressure (psi)
Output(s)
P: Accumulator Pressure (psi)
Formula(s)
\[
\mathrm{P}=\frac{\mathrm{V}_{\mathrm{r}}}{\mathrm{V}_{\mathrm{a}}} *\left(\frac{\mathrm{P}_{\mathrm{f}} * \mathrm{P}_{\mathrm{s}}}{\mathrm{P}_{\mathrm{s}}-\mathrm{P}_{\mathrm{f}}}\right)
\]
Reference(s)
Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 41.