Rock removal rate
Input(s)
\(d_{b}\): Bit Diameter (in.)
\(R\): Penetration Rate \((\mathrm{ft} / \mathrm{h})\)
Output(s)
\(q_{r}\): Rock Removal Rate \((\mathrm{SCF} / \mathrm{min})\)
Formula(s)
\[
q_{r}=\frac{\pi}{4} \frac{d_{b}^{2} R(12)}{(1,728)(60)}=\frac{d_{b}^{2} R}{11000}
\]
Reference(s)
Watson, D., Brittenham, T., & Moore, P. L. (2003). Advanced Well Control (Vol. 10). Society of Petroleum Engineers., Page: 19.