Drilling Mud - Formation Pressure Balance

Contents

Mud density needed to balance formation pressure - mud hydrostatic > formation pressure + safety margin.

Formula

$$ \rho = (p_f + p_{safety}) / (g \cdot TVD) $$

Symbol	Meaning	Unit	Source
$TVD$	True Vertical Depth	m	well plan
$p_f$	Formation pressure	psi	LOT / geology