Pressure control
Annular BOPs
Seal around pipe, tools or an open hole with a single packing unit.
Overview
An annular blowout preventer closes a reinforced elastomer packing unit around whatever is in the bore: drill pipe, tool joints, casing, wireline or nothing at all. It is normally the first preventer closed when a kick is detected.
Annular preventers also allow controlled stripping of pipe through the closed element, which makes them central to well control procedures.
Key Features
- Seals on a wide range of pipe sizes and shapes
- Stripping capability under pressure
- Replaceable packing units
- Hydraulic operation with documented closing pressures
Applications
- Surface BOP stacks on land rigs and jack-ups
- Workover and completion operations
- Stripping operations
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