Accumulator precharge pressure

Input(s)

Va\mathrm{V}_{\mathrm{a}}: Total Accumulator Volume (bbl)(\mathrm{bbl})

PS\mathrm{P}_{\mathrm{S}}: Starting Accumulator Pressure (psi)

Vr\mathrm{V}_{\mathrm{r}}: Volume of Fluid Removed (bbl)

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

Output(s)

P: Accumulator Pressure (psi)

Formula(s)

P=VrVa(PfPsPsPf)\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.


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