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Annular blowout preventer

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Annular blowout preventer packing unit

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Annular sealing element with self-pivoting inserts for blowout p

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Blow-out preventer

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Blowout preventer

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Blowout preventer with radial force limiter

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Method of rebuilding annular-type blow out preventer

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Rotary blowout preventer

Valves and valve actuation – Blow-out preventers – Deformable annulus
Patent

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Rotating blowout preventer with independent cooling circuits...

Valves and valve actuation – Blow-out preventers – Deformable annulus
Reexamination Certificate

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Rotating blowout preventer with independent cooling circuits...

Valves and valve actuation – Blow-out preventers – Deformable annulus
Reexamination Certificate

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Rotating blowout preventer with independent cooling circuits...

Valves and valve actuation – Blow-out preventers – Deformable annulus
Reexamination Certificate

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