Communications: electrical – Wellbore telemetering or control – Using a specific transmission medium
Reexamination Certificate
1999-11-16
2002-12-24
Edwards, Jr., Timothy (Department: 2635)
Communications: electrical
Wellbore telemetering or control
Using a specific transmission medium
C340S854400, C166S097500
Reexamination Certificate
active
06498568
ABSTRACT:
The invention relates to a pipeline Communication system for providing monitoring and/or control of pipeline based plant and equipment.
SUMMARY OF THE INVENTION
In patent documents WO-A-9326115 and FR-A-2097265 undersea pipeline systems cooperating with an offshore drilling platform are disclosed having a communications link.
The present invention is concerned with a land based system.
According to the invention there is provided a pipeline communication system for an electrically conductive pipeline insulated from the adjacent ground and including; transmitter means for sending information from a remote station using the pipeline and the adjacent ground as conductors; receiver means for receiving information at a remote station using the pipeline and the adjacent ground; and means employing recovery techniques to enhance the degraded received signals due to their passage along the pipeline and the adjacent ground.
Further according to the invention a communication method employing an electrically conductive pipeline insulated from the adjacent ground the method including transmitting information from a remote station by using the pipeline and the adjacent ground as conductors, employing recovery techniques to enhance the degraded received signals to recover the information therein.
REFERENCES:
patent: 3129394 (1964-04-01), Long
patent: 5587707 (1996-12-01), Dickie et al.
Austin David
Broekhuizen Koos
Cordes Paul Beaumont
Foster Gerard Terence
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