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


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