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A B C D E F G H I J K L M N O P R S T U V W

*This is an abridged version of the Dictionary of Petroleum Terms provided by Petex and the
University of Texas Austin
© Petex 2001

Annular Blowout Preventer

A large valve, usually installed above the ram preventers, that forms a seal in the annular space between the pipe and well bore. If no pipe is present, it forms a seal on the well bore itself. See blowout preventer.

 Annular Blowout Preventer
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