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Annular blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Annular blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Annular blowout preventer

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

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Annular blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Annular blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Annular blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Annular blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Annular blowout preventer

Valves and valve actuation – Blow-out preventers
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 blowout preventer with upper and lower spherical sealing

Valves and valve actuation – Blow-out preventers
Patent

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Annular blowout preventer with upper and lower spherical sealing

Valves and valve actuation – Blow-out preventers
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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Annular type blowout preventer

Valves and valve actuation – Blow-out preventers
Patent

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Apparatus for sealing a well blowout

Valves and valve actuation – Blow-out preventers – Radial reciprocating ram
Patent

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Bi-directional sealing ram

Valves and valve actuation – Blow-out preventers – Radial reciprocating ram
Patent

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Bidirectional sealing blowout preventer

Valves and valve actuation – Blow-out preventers – Radial reciprocating ram
Reexamination Certificate

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Blow-out preventer

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

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Blow-out protector packer element

Valves and valve actuation – Blow-out preventers
Patent

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Blowout preventer

Valves and valve actuation – Blow-out preventers – Radial reciprocating ram
Patent

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Blowout preventer

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

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