4. Wells
  5. Processes
  6. Placing fluid into the formation

Warren M. Zemlak

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Flow-operated valve

Wells – Valves – closures or changeable restrictors – Fluid operated
Reexamination Certificate

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Process for hydraulically fracturing oil and gas wells

Wells – Processes – Placing fluid into the formation
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2487523

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