4. Wells
  5. Packers or plugs
  6. Central support has shoulders expanding sealing portion, or...

Donald W. Winslow

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Coiled tubing inflatable packer with circulating port

Wells – Processes – Placing or shifting well part
Patent

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Coiled tubing inflatable packer with circulating port

Wells – Packers or plugs – With controllable passage between central chamber and space...
Patent

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Drill pipe bridge plug

Wells – Packers or plugs – With expanding anchor
Patent

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Drill pipe bridge plug

Wells – Processes – Placing or shifting well part
Patent

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Drill pipe tester - pressure balanced

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

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Profile ID: LFUS-PAI-P-10455

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