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US 4,491,738 AGranted
Means for generating electricity during drilling of a borehole
AssigneeShell Internationale Research Maatschappij B.V.
InventorAnthony-Willem Kamp
Life of this patent
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Abstract
A generator for providing electric energy in a borehole during drilling thereof, the generator comprising an anchor which is movable in a reciprocating mode in response to pressure pulses in the drilling fluid caused by rapidly opening or closing a valve.
Claims6
A machine, adapted to be carried in a section of drill string or similar downhole apparatus, for generating electric energy in response to fluid dynamics within the drill string, comprising:
- a generator housing provided with connector means for mounting said housing within the drill string;
- conduit means associated with said housing for providing fluid communication from the interior of the drill string through said housing;
- valve means, associated with said conduit means, for controlling fluid flow through at least a part of said conduit means;
- generator means, including a stator and an anchor, said stator being mounted within said housing, said anchor being contained within said housing so as to be movable in a reciprocating mode relative to said stator in response to changes in fluid flow through said conduit means caused by the operation of said valve means.
1 more element
Dependencies are inferred from the claim text.