Capacity formulas - gal/ft
Input(s)
\(\mathrm{d}_{\mathrm{h}}\): Inside Diameter of Casing (in.)
\(\mathrm{d}_{\mathrm{p}}\): Outside Diameter of Casing (in.)
Output(s)
AC: Annular Capacity (gal/ft)
Formula(s)
\[
\mathrm{AC}=\frac{\mathrm{d}_{\mathrm{h}}^{2}-\mathrm{d}_{\mathrm{p}}^{2}}{24.51}
\]
Reference(s)
Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 12.