4. Wells
  5. Valves, closures or changeable restrictors

Michael J. Krenek

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Apparatus for protecting subsea wells

Hydraulic and earth engineering – Marine structure or fabrication thereof – Structure protection
Patent

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Metal-to-metal sealing pipe swivel joint

Pipe joints or couplings – With fluid pressure seal – Swivel with flange in socket
Patent

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Method and apparatus for running, operating, and retrieving subs

Wells – Valves – closures or changeable restrictors
Patent

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Profile ID: LFUS-PAI-P-151057

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