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.