Volumes and strokes-Annular volume
Input(s)
Dh: Drill Hole Diameter (in.)
Dp: Drillpipe Outer Diameter (in.)
Output(s)
B: Annular Volume (bbl)
Formula(s)
\[
\mathrm{B}=\frac{\mathrm{Dh}^{2}-\mathrm{Dp}^{2}}{1029.4}
\]
Reference(s)
Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 39.