4. Wells
  5. Processes
  6. Cleaning or unloading well

Steven L. Schwegman

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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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Coiled tubing swivel with stepped bearing races

Pipe joints or couplings – Swivel – Pipe in socket type
Reexamination Certificate

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Jetting tool

Wells – Whirling or lateral discharge or projectable nozzles – Rotary or projectable
Patent

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Positive circulating valve with retrievable standing valve

Wells – Packers or plugs – With expanding anchor
Patent

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Profile ID: LFUS-PAI-P-38018

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