Duplex pump output by using liner and rod diameters

Input(s)

$d_{1}$: Liner Diameter (in.)

$d_{\mathrm{r}}$: Rod Diameter (in.)

$1_{s}$: Stroke Length (in.)

Output(s)

$\mathrm{q}_{\mathrm{o}}:$ Pump Output (bbl/stroke)

Formula(s)

Reference(s)

Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 9.