4. Wells
  5. Packers or plugs
  6. Expanded by confined fluid from central chamber, pump or...
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Device for plugging horizontal or vertical wells in oil or simil

Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Patent

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Downhole tool inflatable packer assembly

Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Patent

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Downhole tool retention apparatus

Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Reexamination Certificate

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Downhole tool with increased friction surface and method of manu

Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Patent

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Drag spring unit

Wells – Packers or plugs – Expanded by confined fluid from central chamber – pump or...
Patent

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