4. Wells
  5. Valves, closures or changeable restrictors
  6. Operated by dropped element

Joseph Puntar

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Inside blowout preventer well tool

Wells – Valves – closures or changeable restrictors – Operated by dropped element
Patent

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Retrievable inside blowout preventer valve apparatus

Wells – Packers or plugs – With expanding anchor
Patent

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Profile ID: LFUS-PAI-P-1104553

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