4. Communications, electrical: acoustic wave systems and devices
  5. Wellbore telemetering
  6. Through drill string or casing
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Data transmission in a drill string

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

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Distributed downhole drilling network

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

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Downhole pipe selection for acoustic telemetry

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

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Downhole telemetry system for wired tubing

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

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Drilling signal transmission method and system

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

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Dynamic efficiency optimization of piezoelectric actuator

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

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