4. Communications: electrical
  5. Wellbore telemetering or control
  6. Using a specific transmission medium
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Well data telemetry system

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Patent

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Well data transmission system using a magnetic drill string for

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Patent

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Well logging apparatus for investigating earth formations

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Patent

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Well logging fiber optic communication system

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Patent

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Wellbore telemetry and noise cancellation systems and method...

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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Wellbore tool with hall effect coupling

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Patent

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Wireless communication system and method

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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Wireless downhole electromagnetic data transmission system and m

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Patent

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Wireless reservoir production control

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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Wireless telemetry between wellbore tools

Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate

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