4. Wells
  5. With electrical means
  6. Valve

David Rothers

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Computer controlled downhole tools for production well control

Wells – Automatic
Patent

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Downhole tools for production well control

Wells – With electrical means – Valve
Patent

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Downhole zone isolation system

Wells – Means for forming filter beds
Reexamination Certificate

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Remote control for a plug-dropping head

Wells – Processes – Cementing – plugging or consolidating
Patent

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Profile ID: LFUS-PAI-P-528528

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