Definition(s)
Final Circulating Pressure
Drill string pressure required to circulate at the selected kill-rate adjusted for increase in kill drilling fluid density over the original drilling fluid density; used from the time kill drilling fluid reaches the bottom of the drill string until kill operations are completed or a change in either kill drilling fluid density or kill-rate is effected.
Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards