Upward force acting at the bottom of the casing shoe
Input(s)
A: Area Below Casing Shoe (in. \({ }^{2}\) )
\(\partial\) P: Differential Pressure B/w Cement and Mud (psi)
Output(s)
\(\mathrm{F}_{\mathrm{u}}\): Upward Force (lb)
Formula(s)
\[
\mathrm{F}_{\mathrm{u}}=\mathrm{A} * \partial P
\]
Reference(s)
Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 67.