4. Wells
  5. Processes
  6. Parallel string or multiple completion well

James Fehr

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Flow restrictor valve for a downhole drilling assembly

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type
Reexamination Certificate

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Multiple string completion apparatus and method

Wells – Processes – Parallel string or multiple completion well
Patent

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Pneumatic hammer drilling assembly for use in directional...

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-379048

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