Accumulator capacity

Input(s)

BC: Bottle Volume per capacity (gallons)

$\mathrm{P}_{\mathrm{P}}$: Pre-charge Pressure (psi)

$\mathrm{P}_{\mathrm{S}}$: System Pressure $(\mathrm{psi})$

$\mathrm{P}_{\mathrm{f}}$: Final Pressure $(\mathrm{psi})$

Output(s)

V: Accumulator Capacity (gallon)

Formula(s)

$$ \mathrm{V}=\mathrm{BC} *\left(\frac{\mathrm{P}_{\mathrm{P}}}{\mathrm{P}_{\mathrm{f}}}-\frac{\mathrm{P}_{\mathrm{P}}}{\mathrm{P}_{\mathrm{S}}}\right) $$

Reference(s)

Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 39.