4. Wells
  5. Submerged well
  6. With safety or emergency shutoff
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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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