Device and a method for downhole energy generation
AssigneeWell Technology AS
InventorsBård Martin Tinnen, Håvar Sørtveit
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Abstract
A downhole electrical energy generating device and a method for transforming energy from a fluid flow passing the device are described. A vibrating assembly is influenced by the fluid flow to oscillate, the vibrating assembly including an elongated body having a longitudinal axis being arranged non-parallel with the fluid flow, a stiff body connecting the elongated body to a portion of the device located downstream of said elongated body; at least one energy harvester influenced by the vibrating assembly, wherein the energy generating device is provided with means for influencing the oscillation frequency of the vibrating assembly.
Claims14
A downhole electrical energy generating device for transforming energy from a fluid flow passing the device, the device comprising:
- at least one vibrating assembly influenced by the fluid flow to oscillate, the vibrating assembly including an elongated body having a longitudinal axis arranged non-parallel with the fluid flow;
- a stiff body connecting the elongated body to a portion of the device located downstream of said elongated body;
- and
- at least one energy harvester influenced by the vibrating assembly,
- wherein the energy generating device comprises a frequency influencing device positioned and configured to influence an oscillation frequency of the vibrating assembly, and
- wherein the stiff body extends into a sealed housing filled with a fluid.
A method for optimising energy harvesting from a fluid flowing in a pipe, the method comprising:
- arranging a downhole electrical energy generating device in the fluid flow, said device comprising at least one vibrating assembly influenced by the fluid flow, and at least one energy harvester influenced by the vibrating assembly, the vibrating assembly including an elongated body and a stiff body connecting the elongated body to a portion of the device, and the stiff body extends into a sealed housing filled with a fluid, the device comprising a frequency influencing device positioned and configured to influence an oscillation frequency of the vibrating assembly;
- and
- setting the frequency influencing device to influence the oscillation frequency.
Dependencies are inferred from the claim text.