Definition(s)


Primary Well Control

Prevention of formation fluid flow by maintaining a hydrostatic pressure equal to or greater than formation pressure.

Source: API RP 59, Recommended Practice for Well Control Operations, Second Edition, May 2006. Global Standards

Source: API RP 64, Recommended Practice for Diverter Systems Equipment and Operations, Second Edition, November 2001 (March 1, 2007). Global Standards

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