Definition(s)
Stable (Stabilized)
A state in which the pressure change rate has decreased to within acceptable limits before beginning the hold period during a pressure test. NOTE: Pressure changes can be caused by such things as variations in temperature, setting of elastomer seals, or compression of air or fluids, etc.
Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards