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Glossary:Blowout preventer

Revision as of 08:34, 9 September 2013 by Glenda Smith (Glendasmith) (talk | contribs)
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A conditional surface pressure barrier often consisting of a set of hydraulically operated rams containing equipment designed to grip pipe, seal around pipe, shear off pipe or seal an open hole during drilling or a workover. It may also contain an annular preventer.