4. Wells
  5. Packers or plugs
  6. With expanding anchor

J. Allan Clark

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Hydraulic set packer and testing apparatus

Wells – Packers or plugs – With expanding anchor
Patent

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Integrated well drilling and evaluation

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through drill string or casing
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1295559

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