Blowout Preventer


blowout preventer

[′blō‚au̇t pri‚ven·tər] (petroleum engineering) Any one of several types of valves used on the wellhead to prevent the loss of pressure either in the annular space between drill pipe and casing or in the open hole during drilling completion operations.

Blowout Preventer

 

a device for the hermetic sealing of a well during drilling. It is used to prevent the open gushing of oil or gas.