Subsea template electromagnetic telemetry

Details Subsea template electromagnetic telemetry Subsea template electromagnetic telemetry

1998-02-27

2000-11-21

Olms, Douglas W.

Communications: electrical

Wellbore telemetering or control

Using a specific transmission medium

3408533, G01V 100

Patent

active

06150954&

ABSTRACT:
An electromagnetic downlink and pickup apparatus for transmitting and receiving electromagnetic signals is disclosed. The electromagnetic downlink and pickup apparatus includes a subsea conductor (47) disposed beneath the sea floor (16) and a surface installation (58) for generating and interpreting signals. The subsea conductor (47) and the surface installation (58) are electrically connecting by first and second conduits (30, 51) that form a pair terminals on the subsea conductor (47) between which a voltage potential may be established, thereby providing a path for current flow therebetween.

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patent: 5942990 (1999-08-01), Smith et al.
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