4. Wells
  5. Packers or plugs
  6. With expanding anchor

Jeffrey J. Lembcke

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Adjustable orifice valve

Valves and valve actuation – With material guide or restrictor – Movable or resilient guide or restrictor
Patent

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Downhole tool release mechanism

Wells – Processes – Placing or shifting well part
Patent

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Downhole tool sealing system with cylindrical biasing member wit

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent

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Electrically actuated safety valve for a subterranean well

Wells – Processes – Placing or shifting well part
Patent

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High-load big bore lock

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Profile ID: LFUS-PAI-P-174388

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