4. Wells
  5. With jar means for releasing stuck part

Mark C. Oettli

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Cup packer

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Downhole machining of well completion equipment

Wells – Submerged well – Means removably connected to permanent well structure
Reexamination Certificate

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Jarring tool

Wells – With jar means for releasing stuck part
Patent

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Jarring tool enhancer

Boring or penetrating the earth – Below-ground impact members – Fluid-operated
Patent

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Multi-cycle dump valve

Wells – Processes – Operating valve – closure – or changeable restrictor in a well
Reexamination Certificate

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Profile ID: LFUS-PAI-P-620531

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