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Abandonment of sub-sea wells

Wells – Submerged well – With safety or emergency shutoff
Patent

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Annulus shut-off mechanism

Wells – Submerged well – With safety or emergency shutoff
Patent

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Apparatus and method for killing or suppressing a subsea well

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Apparatus for device using actuator having expandable...

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Apparatus for preventing critical annular pressure buildup

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Blow-out preventer

Wells – Submerged well – With safety or emergency shutoff
Patent

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Blow-out prevention device for shutting off an annulus between a

Wells – Submerged well – With safety or emergency shutoff
Patent

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Downhole electrical-to-hydraulic conversion module for well...

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Lightweight and compact subsea intervention package and method

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Method and apparatus for a safety system

Wells – Submerged well – With safety or emergency shutoff
Patent

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Method and apparatus of operating devices using actuators...

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Method for preventing critical annular pressure buildup

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Offshore well remote control system

Wells – Submerged well – With safety or emergency shutoff
Patent

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Offshore well remote start-up system

Wells – Submerged well – With safety or emergency shutoff
Patent

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Pressure release valve for a subsea blowout preventer

Wells – Submerged well – With safety or emergency shutoff
Patent

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Retainer valve

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Safety joint

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Sealing device for use in subsea wells

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Shearing arrangement for subsea umbilicals

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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Subsea choke control system

Wells – Submerged well – With safety or emergency shutoff
Reexamination Certificate

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