Downhole transmission system comprising a coaxial capacitor

Details Downhole transmission system comprising a coaxial capacitor Downhole transmission system comprising a coaxial capacitor

2011-05-24

2011-05-24

Wong, Albert K (Department: 2612)

Communications: electrical

Wellbore telemetering or control

Using a specific transmission medium

C340S854300, C340S853100, C307S089000, C307S090000, C307S104000, C324S323000, C324S351000, C324S353000

Reexamination Certificate

active

07948395

ABSTRACT:
A transmission system in a downhole component comprises a plurality of data transmission elements. A coaxial cable having an inner conductor and an outer conductor is disposed within a passage in the downhole component such that at least one capacitor is disposed in the passage and having a first terminal coupled to the inner conductor and a second terminal coupled to the outer conductor. Preferably the transmission element comprises an electrically conducting coil. Preferably, within the passage a connector is adapted to electrically connect the inner conductor of the coaxial cable and the lead wire. The coaxial capacitor may be disposed between and in electrically communication with the connector and the passage. In another embodiment a connector is adapted to electrical connect a first and a second portion of the inner conductor of the coaxial cable and a coaxial capacitor is in electrical communication with the connector and the passage.

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