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Glossary Oil and Gas Field Operations / Term

Annular Preventer

A large bag-type pressure isolation component, usually installed above the ram preventers, which forms a seal in the annular space between the drill pipe or tubing and the wellbore. Compression of a reinforced elastomer packing element by hydraulic pressure effects the seal. Some annular preventers are capable of creating a pressure seal, even if pipe or tubing is not present in the wellbore.

Permanent link Annular Preventer - Creation date 2020-06-07


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