4. Wells
  5. Valves, closures or changeable restrictors

Danny K. Wolff

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Blanking plug assembly

Wells – Processes – Placing or shifting well part
Patent

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High torque rotating actuator

Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
Reexamination Certificate

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Intervention spool for subsea use

Wells – Submerged well – Connection or disconnection of submerged members remotely...
Reexamination Certificate

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Method and apparatus for a surface control system for: subsurfac

Wells – Valves – closures or changeable restrictors
Patent

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Multi-passage fluid coupling and metal seal therefor

Fluid handling – Systems – Flow path with serial valves and/or closures
Patent

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Profile ID: LFUS-PAI-P-935421

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