4. Wells
  5. Packers or plugs
  6. Flow stopping type; e.g., plug

Specialised Petroleum Services Group Ltd.

Corporate Assignee

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Corporate Assignee

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Circulating sub and method

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Circulating sub and method

Wells – Processes – Placing or shifting well part
Reexamination Certificate

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Disengagable burr mill

Wells – Processes – Cleaning or unloading well
Reexamination Certificate

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Downhole circulation valve operated by dropping balls

Wells – Valves – closures or changeable restrictors – Operated by dropped element
Reexamination Certificate

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Downhole tool with actuable barrier

Wells – Packers or plugs – Flow stopping type; e.g. – plug
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2388390

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