API 16A Annular Blowout Preventer (BOP) manufacturers
Overview. A Blowout Preventer (BOP) is a large, specialized valve or similar mechanical device, used to seal, control and monitor oil and gas wells to prevent blowouts, the uncontrolled release of crude oil and/or natural gas from a well.They are usually installed in stacks of other valves. An Annular Blowout Preventer can close around the drill string, casing or a non-cylindrical object, such ...
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