Vortex energy harvester for downhole applications
First Claim
Patent Images
1. A system comprising:
- one or more electro acoustic technology assemblies mounted downhole in close proximity to a fiber optic cable that is part of a fiber optic distributed acoustic sensing (DAS) system connected back to a surface distributed acoustic sensing interrogator; and
one or more vortex energy harvesters attached to each of the electro acoustic technology assemblies and exposed to a fluid flow in a downhole application.
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Abstract
The present invention relates to a system for vortex energy harvesting for downhole applications and a method thereof, the system comprising: one or more electro acoustic technology assemblies mounted downhole in close proximity to a fiber optic cable that is part of a fiber optic distributed acoustic sensing system connected back to a surface distributed acoustic sensing interrogator; and one or more vortex energy harvesters attached to each of the electro acoustic technology assemblies and exposed to a fluid flow in the downhole application.
32 Citations
19 Claims
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1. A system comprising:
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one or more electro acoustic technology assemblies mounted downhole in close proximity to a fiber optic cable that is part of a fiber optic distributed acoustic sensing (DAS) system connected back to a surface distributed acoustic sensing interrogator; and one or more vortex energy harvesters attached to each of the electro acoustic technology assemblies and exposed to a fluid flow in a downhole application. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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providing one or more electro acoustic technology assemblies mounted downhole in close proximity to a fiber optic cable that is part of a fiber optic distributed acoustic sensing (DAS) system connected back to a surface distributed acoustic sensing interrogator; providing one or more vortex energy harvesters attached to each of the electro acoustic technology assemblies and exposed to a fluid flow in a downhole application wherein each of the one or more vortex energy harvesters is vibrated by vortex induced vibration by the fluid flow across the one or more vortex energy harvesters and each vortex energy harvester comprises at least one piezo electric crystal that is compressed and extended, creating electrical charge between ends of the at least one piezo electric crystal; and wherein the resulting electrical charge is harvested and used to at least one charge a battery and provide direct power to the one or more electro acoustic technology assemblies. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A vortex energy harvester comprising:
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a cylindrically shaped extension passing through a mount plate that is to be attached to a downhole casing wall so that the extension is exposed to a fluid flow within the casing; one or more piezo electric crystals mounted to the cylindrically shaped extension outside of the casing the piezo electric crystals and the portion of the extension outside the casing being surrounded by a protective housing; and one or more pivot pins located outside the casing and within the protective housing, the portion of the cylindrically shaped extension outside of the casing mounted onto the one or more pivot pins.
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Specification