Oil well casting electrical power pick-off points

Details Oil well casting electrical power pick-off points Oil well casting electrical power pick-off points

2007-01-30

2007-01-30

Garber, Wendy R. (Department: 2612)

Communications: electrical

Wellbore telemetering or control

Including specified power transmission feature or source

C166S066000, C367S035000

Reexamination Certificate

active

10220402

ABSTRACT:
A power supply apparatus is provided for supplying power and communications within a first piping structure. An external power transfer device is positioned around the first piping structure and is magnetically coupled to an internal power transfer device. The internal power transfer device is positioned around a second piping structure disposed within the first piping structure. A main surface current flowing on the first piping structure induces a first surface current within the external power transfer device. The first surface current causes a second surface current to be induced within the internal power transfer device.

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