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

Phillip H. Manderscheid

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Anchoring assembly

Wells – Packers or plugs – With expanding anchor
Patent

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Annulus operated test valve

Wells – Valves – closures or changeable restrictors – Fluid operated
Patent

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High temperature well packer

Wells – Packers or plugs – With expanding anchor
Patent

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Liner hanger with channel guides

Wells – Expansible anchor or casing – Liner hanger
Patent

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Valve retrieval mechanism for an inflatable packer system

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Patent

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Profile ID: LFUS-PAI-P-211430

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