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Blowout Preventer Stack and Control Systems - Lillehammer Energy ...

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Basic design <strong>and</strong> operating principle<br />

• Main design considerations<br />

making an annular seal for equipment of different<br />

shapes <strong>and</strong> sizes<br />

the ability to cut through equipment in the bore of the<br />

BOP<br />

• How is the power delivered?<br />

Very early days – using a screwing mechanism<br />

Subsequently – using hydraulic power

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