Difference in pressure gradient between the cement and mud

Input(s)

$\mathrm{W}_{\mathrm{c}}$: Cement Weight $(\mathrm{ppg})$

$\mathrm{W}_{\mathrm{m}}$: Mud Weight (ppg)

Output(s)

PG: Pressure Gradient between Cement and Mud (psi/ft)

Formula(s)

$$ \mathrm{PG}=\left(\mathrm{W}_{\mathrm{c}}-\mathrm{W}_{\mathrm{m}}\right) * 0.052 $$

Reference(s)

Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition Gulf Professional, Publishing, Page: 66.