Apparatus and methods for powering downhole electrical devices

Details Apparatus and methods for powering downhole electrical devices Apparatus and methods for powering downhole electrical devices

2007-05-22

2007-05-22

Bagnell, David (Department: 3672)

Wells

With electrical means

C175S104000

Reexamination Certificate

active

10819664

ABSTRACT:
A drilling system comprises a tubular member disposed in a wellbore having a downhole assembly disposed therein. At least one electrical device is disposed in the downhole assembly. A fuel cell is disposed in the downhole assembly and operatively coupled to the electrical device for providing electrical power thereto. The fuel cell extracts at least a portion of its fuel supply from the flowing drilling fluid downhole. In another aspect, a pipeline system comprises a pipeline having a fluid flowing therein. An electrically powered device is disposed in the pipeline. A fuel cell is operatively coupled to the electrically powered device for providing electrical power thereto. The fuel cell extracts at least a portion of a fuel supply from a fluid flowing in the pipeline.

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patent: 2006/0006656 (2006-01-01), Smedstad

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