4. Communications: electrical
  5. Wellbore telemetering or control
  6. In horizontal or inclined passage arrangement
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Data transmission system for logging tools

Communications: electrical – Wellbore telemetering or control – In horizontal or inclined passage arrangement
Patent

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Device for exploring an underground formation crossed by a horiz

Communications: electrical – Wellbore telemetering or control – In horizontal or inclined passage arrangement
Patent

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Downhole digital power amplifier for a measurements-while-drilli

Communications: electrical – Wellbore telemetering or control – In horizontal or inclined passage arrangement
Patent

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Downhole pressure and temperature monitoring system

Communications: electrical – Wellbore telemetering or control – In horizontal or inclined passage arrangement
Patent

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Downhole telemetry apparatus and method

Communications: electrical – Wellbore telemetering or control – In horizontal or inclined passage arrangement
Patent

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