Downhole power and data transfer using resonators
First Claim
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1. A system for use with a well string, the system comprising:
- a first resonator positioned coaxially about a longitudinal axis of a first well string member for generating an evanescent field at a particular frequency in response to receiving a signal at the particular frequency;
a second resonator positioned coaxially about a longitudinal axis of a second well string member and entirely below or entirely above the first resonator, the second resonator having a first resonance frequency and being positioned to couple with the evanescent field in response to the particular frequency being the first resonance frequency, wherein the second resonator comprises a first load;
a third resonator having a second resonance frequency that is different from the first resonance frequency and being positioned to couple with the evanescent field in response to the particular frequency being the second resonance frequency, wherein the third resonator comprises a second load; and
a metamaterial positioned between the first resonator and at least one of the second resonator or the third resonator, wherein the metamaterial is for amplifying or extending a range of the evanescent field, wherein the metamaterial comprises a conductive material having a periodic array of apertures.
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Abstract
A downhole system usable with a well string is provided that can include a first resonator positioned on the well string. The system can also include a second resonator positioned to couple with the first resonator by an evanescent field. The second resonator can include a load. Further, the system can include a metamaterial positioned between the first resonator and the second resonator for amplifying or extending a range of the evanescent field.
23 Citations
16 Claims
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1. A system for use with a well string, the system comprising:
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a first resonator positioned coaxially about a longitudinal axis of a first well string member for generating an evanescent field at a particular frequency in response to receiving a signal at the particular frequency; a second resonator positioned coaxially about a longitudinal axis of a second well string member and entirely below or entirely above the first resonator, the second resonator having a first resonance frequency and being positioned to couple with the evanescent field in response to the particular frequency being the first resonance frequency, wherein the second resonator comprises a first load; a third resonator having a second resonance frequency that is different from the first resonance frequency and being positioned to couple with the evanescent field in response to the particular frequency being the second resonance frequency, wherein the third resonator comprises a second load; and a metamaterial positioned between the first resonator and at least one of the second resonator or the third resonator, wherein the metamaterial is for amplifying or extending a range of the evanescent field, wherein the metamaterial comprises a conductive material having a periodic array of apertures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method, comprising:
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receiving, by a first resonator positioned coaxially about a longitudinal axis of a first well string member, a first signal at a first frequency; generating, by the first resonator, a first evanescent field at the first frequency; amplifying or extending, by a metamaterial, the first evanescent field, wherein the metamaterial comprises a conductive material having a periodic array of apertures; coupling, by a second resonator positioned coaxially about a longitudinal axis of a second well string member and entirely below or entirely above the first resonator, with the first evanescent field at the first frequency; transmitting, by the second resonator, a first amount of power to a first load; receiving, by the first resonator, a second signal at a second frequency that is different from the first frequency; generating, by the first resonator, a second evanescent field at the second frequency; coupling, by a third resonator, with the second evanescent field at the second frequency; and transmitting, by the third resonator, a second amount of power to a second load. - View Dependent Claims (13, 14, 15, 16)
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Specification