4. Wells
  5. Processes
  6. Cementing, plugging or consolidating

Ernest E. Armstrong

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Apparatus for completing a well

Wells – Valves – closures or changeable restrictors – Operated by dropped element
Patent

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Cementing staging tool

Wells – Valves – closures or changeable restrictors – Destructible element
Patent

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Method and apparatus for cementing a casing

Wells – Processes – Cementing – plugging or consolidating
Patent

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Profile ID: LFUS-PAI-P-780250

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