Bit nozzle pressure loss
Input(s)
\(\mathrm{N}_{\mathrm{a}}\): Nozzle Area (in. \({ }^{2}\) )
Q: Flow Rate (gpm)
MW: Mud Weight (ppg)
Output(s)
\(\mathrm{P}_{\mathrm{b}}\): Bit Nozzle Pressure Loss (psi)
Formula(s)
\[
\mathrm{P}_{\mathrm{b}}=\left(\mathrm{Q}^{2}\right) * \frac{\mathrm{MW}}{10858 *\left(\mathrm{~N}_{\mathrm{a}}\right)^{2}}
\]
Reference(s)
Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 165.