Maximum allowable mud weight

Input(s)

mw: Mud weight $(\mathrm{ppg})$

tvd: True Vertical Depth of Casing Shoe (ft)

$P_{l}$: Leak-off Pressure (psi)

Output(s)

$m w_{\text {max }}$: Max Allowable Mud wt (ppg)

Formula(s)

$$ m w_{\max }=\frac{P_{l}}{0.052 * t v d}+m w $$

Reference(s)

Formulas and Calculations for Drilling, Production and Workover, Second Edition, Lapeyrouse, Page: 120.