Electromagnetic wellbore telemetry system for tubular strings

Details Electromagnetic wellbore telemetry system for tubular strings Electromagnetic wellbore telemetry system for tubular strings

2009-09-08

2010-12-28

Wong, Albert K (Department: 2612)

Communications: electrical

Wellbore telemetering or control

Using a specific transmission medium

C340S854600, C439S191000, C174S047000, C367S082000

Reexamination Certificate

active

07859426

ABSTRACT:
A coaxial transmission line for an electromagnetic wellbore telemetry system is disclosed. An inner conductive pipe is disposed inside an axial bore of the outer conductive pipe. An insulator is positioned between the outer conductive pipe and the inner conductive pipe. In a specific embodiment, the inner conductive pipe is perforated or slotted.

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