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Mudline casing hanger mechanism incorporating improved seals and

Wells – Submerged well – Wellhead
Patent

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Multiplexed electrohydraulic type of control system for use in u

Wells – Submerged well – Wellhead
Patent

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Nested stack-down casing hanger system for subsea wellheads

Wells – Submerged well – Wellhead
Reexamination Certificate

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Plug installation system for deep water subsea wells

Wells – Submerged well – Wellhead
Reexamination Certificate

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Pressure control with compliant guide

Wells – Submerged well – Wellhead
Reexamination Certificate

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Production tree with multiple safety barriers

Wells – Submerged well – Wellhead
Reexamination Certificate

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Production well-heads for underwater oil wells

Wells – Submerged well – Wellhead
Patent

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Recovery of production fluids from an oil or gas well

Wells – Submerged well – Wellhead
Reexamination Certificate

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Recovery of production fluids from an oil or gas well

Wells – Submerged well – Wellhead
Reexamination Certificate

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Recovery of production fluids from an oil or gas well

Wells – Submerged well – Wellhead
Reexamination Certificate

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Retaining apparatus for use in a wellhead assembly and...

Wells – Submerged well – Wellhead
Reexamination Certificate

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Retractable stinger purge valve

Wells – Submerged well – Wellhead
Patent

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ROV-deployable subsea wellhead protector

Wells – Submerged well – Wellhead
Reexamination Certificate

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Sea-floor pressure head assembly

Wells – Submerged well – Wellhead
Reexamination Certificate

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Sealing assembly for subsea wellheads

Wells – Submerged well – Wellhead
Patent

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Shallow flow wellhead system

Wells – Submerged well – Wellhead
Patent

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Subsea completion annulus monitoring and bleed down system

Wells – Submerged well – Wellhead
Reexamination Certificate

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Subsea pump system

Wells – Submerged well – Wellhead
Patent

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Subsea tree coupling for mudline suspension system

Wells – Submerged well – Wellhead
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Subsea trees and caps for them

Wells – Submerged well – Wellhead
Reexamination Certificate

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