System and method of transferring power within a wellbore
A multi-phase, inductive coupling first portion is carried by a tubular. The coupling first portion is configured to inductively transmit current with a corresponding multi-phase, inductive coupling second portion. A downhole-type electric stator is carried by the tubular and is configured to receive and electromagnetically interact with an electric rotor-impeller. The coupling first portion is electrically connected to windings of the stator.
1. A downhole-type artificial lift component, comprising:
a wellbore tubular;
a multi-phase, inductive coupling first portion carried by the tubular, the coupling first portion configured to inductively transmit current with a corresponding multi-phase, inductive coupling second portion;
a downhole-type electric stator carried by the tubular and configured to receive and electromagnetically interact with a retrievable electric rotor-impeller, the coupling first portion electrically connected to windings of the stator;
the retrievable electric rotor-impeller configured to be at least partially carried within the electric stator, the electric rotor-impeller configured to be retrievable from a well separately from the electric stator;
a multi-phase, inductive coupling third portion conductively connected in series, by a power cable, to the multi-phase, inductive coupling second portion, the multi-phase, inductive coupling third portion being at an opposite end of the well tubular as the multi-phase, inductive coupling second portion; and
a multi-phase, inductive coupling fourth portion configured to inductively transmit current with the corresponding multi-phase, inductive coupling third portion.
2. The downhole-type artificial lift component of claim 1 , further comprising the corresponding multi-phase, inductive coupling second portion electrically connected to a power source at a topside facility, the corresponding multi-phase, inductive second coupling portion positioned on a side of the tubular.
3. The downhole-type artificial lift component of claim 1 , wherein each phase of one of the multi-phase inductive couplings share a common line.
4. The downhole-type artificial lift component of claim 1 , wherein the multi-phase, inductive first coupling portion and the multi-phase, inductive coupling second portion are both 3-phase.
5. The downhole-type artificial lift component of claim 1 , wherein the tubular is a casing and the multi-phase, inductive coupling second portion is positioned between a wall of a wellbore and the casing.
6. The downhole-type artificial lift component of claim 1 , wherein the tubular is a production tubing and the multi-phase, inductive coupling second portion is positioned between an inner surface of a casing and the production tubing.
7. The downhole-type artificial lift component of claim 1 , wherein the tubular comprises:
a transmission portion configured to increase a power transmission efficiency when compared to a remaining portion of the tubular.
8. The downhole-type artificial lift component of claim 7 , wherein the transmission portion comprises a non-magnetic material.
9. The downhole-type artificial lift component of claim 7 , wherein the transmission portion comprises a non-metallic material.
10. The downhole-type artificial lift component of claim 7 , wherein the transmission portion has a reduced wall thickness when compared to the remaining portion of the tubular.
11. The downhole-type artificial lift component of claim 10 , wherein the multi-phase, inductive coupling second portion is encased by the transmission portion on a first side and by a pressure retaining casing on remaining sides, the pressure retaining casing configured to retain pressure within the tubular.
12. A downhole-type artificial lift component, comprising:
a wellbore tubular;
a multi-phase, inductive coupling first portion carried by the tubular;
a multi-phase, inductive coupling second portion, the multi-phase, inductive coupling first portion configured to inductively transmit current with the multi-phase, inductive coupling second portion;
a downhole-type electric stator carried by the tubular and configured to receive and electromagnetically interact with an electric rotor-impeller, the coupling first portion electrically connected to windings of the stator;
a multi-phase, inductive coupling third portion conductively connected in series to the multi-phase, inductive coupling second portion; and
a multi-phase, inductive coupling fourth portion configured to inductively transmit current with the corresponding multi-phase, inductive coupling third portion.
13. The downhole-type artificial lift component of claim 12 , further comprising:
a first casing section; and
a second casing section, the multi-phase, inductive coupling fourth portion positioned at an uphole end of first casing, the multi-phase, inductive coupling third portion positioned at a downhole end of the second casing section, the multi-phase, inductive coupling fourth portion and the multi-phase, inductive coupling third portion configured to be positioned in proximity adjacent to one another once installed, the multi-phase, inductive second portion positioned at an uphole end of the second casing.
14. The downhole artificial lift component of claim 12 , wherein the multi-phase, inductive coupling third portion is at an opposite end of the well tubular as the multi-phase, inductive coupling second portion.
15. The downhole artificial lift component of claim 12 , wherein the first multi-phase, inductive coupling first portion, the multi-phase, inductive coupling second portion, the multi-phase inductive coupling third portion, and the multi-phase inductive fourth portion are all rated to deliver sufficient power to drive the downhole-type electric stator.
16. A method comprising;
inductively transmitting current between a multi-phase, inductive coupling first portion and a multi-phase, inductive coupling second portion while the coupling portions are residing downhole;
inductively transmitting current between a multi-phase, inductive coupling third portion and a multi-phase, inductive coupling fourth portion, the multi-phase, inductive third portion being conductively connected to the multi-phase, inductive coupling second portion by a power cable;
conductively exchanging current between the multi-phase, inductive coupling first portion and windings of an electric stator; and
supporting an electric rotor-impeller to rotate within the stator.
17. The method of claim 16 , wherein the multi-phase, inductive coupling fourth portion is conductively connected to a topside power source.
18. The method of claim 16 , wherein inductively transmitting comprises transmitting across a portion of a tubular.
19. The method of claim 18 , wherein the portion of the tubular comprises a non-magnetic material.
20. The method of claim 18 , wherein the portion of the tubular comprises a non-metallic material.
21. The method of claim 18 , wherein the portion of the tubular comprises a thinner wall section in comparison with the rest of the tubular.
22. A downhole-type system comprising:
a wellbore tubular;
a multi-phase, inductive coupling first portion carried by the tubular;
a multi-phase, inductive coupling second portion, the first portion configured to inductively transmit current with the corresponding multi-phase, inductive coupling second portion;
a downhole-type electric stator carried by the tubular and configured to receive and electromagnetically interact with retrievable electric rotor-impeller, the coupling first portion electrically connected to windings of the stator;
the retrievable electric rotor-impeller configured to be carried within the electric stator, the electric rotor-impeller configured to be retrievable from a well separately from the electric stator;
a multi-phase, inductive coupling third portion conductively connected in series to the multi-phase, inductive coupling second portion by a power cable; and
a multi-phase, inductive coupling fourth portion configured to inductively transmit current with the corresponding multi-phase, inductive coupling third portion.
23. The downhole-type system of claim 22 , wherein the multi-phase, inductive coupling first portion and the multi-phase, inductive coupling second portion are both 3-phase.