Definition(s)
Pressure Gradient, Normal
The normal pressure divided by true vertical depth.
Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards
Pressure Control
Change of pressure with depth, usually expressed as pounds per square inch per foot.
A scale of pressure differences in which there is a uniform difference in pressure from point to point.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards