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

Jean A. Lescoeur

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Annular safety assembly for an oil well, especially a double pro

Wells – Packers or plugs – With expanding anchor
Patent

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Production tubes for use in the completion of an oil well

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

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Profile ID: LFUS-PAI-P-826543

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