Secondary Well Control

Definition - What does Secondary Well Control mean?

Secondary well control is a need in the event of a primary control failure, which is why it is also known as Blow out Preventer (BOP). Nonetheless, it is essential to remember that secondary well control must be used with specific procedures only in order to manage kick such as driller method, wait and weight, lubricate, etc. In the absence of well controlled techniques, secondary well control is nothing more than a heavy equipment on the rig.

Petropedia explains Secondary Well Control

Primary well control is hydrostatic pressure bore that stops reservoir influx during the drilling tasks. However, a special equipment secondary well control is required to manage the situation when primary well control gets failed. The main idea behind the usage of the secondary well control is to prevent the circulation of fluids into the wellbore and at the end, enable the influx to flow to the surface and safely eject.

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