4. Wells
  5. Valves, closures or changeable restrictors
  6. Longitudinally movable operator

Ray Vincent

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Packer annulus differential pressure valve

Wells – Valves – closures or changeable restrictors – Longitudinally movable operator
Reexamination Certificate

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Plug concealment and diversion tool

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Well completion method and apparatus

Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate

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Zero drill completion and production system

Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate

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Zero drill completion and production system

Wells – Cementing device
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2126321

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