Signal bypass routed through a motor of an electrical submersible pump

Patent metadata

Field	Value
Publication number	US-10164500-B2
Application number	US-201615170141-A
Country	US
Kind code	B2
Filing date	Jun 1, 2016
Priority date	Jun 2, 2015
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

An electrical submersible pumping system includes a well fluid pump driven by a three-phase motor. The motor has a stack of motor laminations mounted in a housing. The motor laminations have axially aligned slots spaced circumferentially around a bore. Motor windings are wound through the slots for receiving three-phase power provided to the motor. At least one set of three control lines extend axially through the motor laminations radially outward from the bore and equally spaced around the axis, The control lines may extend through channels on the outer diameter of the motor laminations. The control lines may also extend through the same slots that contain the windings. The control lines extend to a downhole element below the motor for controlling the downhole element.

First claim

The invention claimed is:

1. An electrical submersible pumping (“ESP”) system comprising:
a well fluid pump:
a three-phase motor operatively connected to the pump and comprising;
a housing having a longitudinal axis;
a stack of motor laminations mounted in the housing, the motor laminations having axially aligned slots spaced circumferentially around a bore;
motor windings wound through the slots for receiving three-phase power provided to the motor;
at least one set of three control lines extending axially through the motor laminations and equally spaced around the axis; and wherein
each of the control lines has a ferrous component that is influenced by electromagnetic fields produced by the motor windings.

2. The system according to claim 1 , further comprising:
at least one set of three upper control line connectors at an upper end of the motor;
at least one set of three lower control line connectors at a lower end of the motor; and wherein
each of the control lines extends between one of the upper control line connectors and one of the lower control line connectors.

3. The system according to claim 1 , further comprising:
a downhole element mounted below the motor; and wherein;
each of the control lines extends to the downhole element.

4. The system according to claim 1 , further comprising:
a controller adapted to be mounted adjacent a wellhead; and
wherein the control lines extend to the controller.

5. The system according to claim 1 , wherein:
at least one of the control lines comprises an insulated electrical wire, and
the ferrous component comprises a metallic sheath surrounding the insulated electrical wire.

6. The system according to claim 1 , wherein:
at least one of the control lines comprises a fiber optic line, and
the ferrous component comprises a metallic tube enclosing the fiber optic line.

7. The system according to claim 1 , wherein:
at least one of the control lines comprises a tube having a passage for conveying a fluid; and
the ferrous component comprises the tube.

8. The system according to claim 1 , further comprising:
at least one set three axially aligned channels extending axially along an outer diameter of the motor laminations and equally spaced around the axis, the channels being spaced radially outward from the slots; and
each of the control lines extends through one of the axially aligned channels.

9. The system according to claim 1 , wherein:
each of the control lines extends through one of the slots that also contains some of the motor windings.

10. An electrical submersible pumping (“ESP”) system comprising:
a well fluid pump;
a three-phase motor operatively connected to the pump and comprising;
a housing having a cylindrical internal surface concentric with a longitudinal axis of the housing;
a stack of motor laminations mounted in the housing, the motor laminations having axially aligned slots spaced circumferentially around a bore, the motor laminations having an outer diameter in contact with the internal surface of the housing;
motor windings wound through the slots for receiving three-phase power provided to the motor;
three axially aligned channels on the outer diameter of the motor laminations radially outward from the slots, the channels being spaced 120 degrees apart from each other;
three internal control lines, each extending axially through one of the channels, each of the internal control lines having a ferrous component that is influenced by electromagnetic fields produced by the windings;
three upper connectors mounted at an upper end of the housing, each of the internal control lines being connected to one of the upper connectors;
three upper control lines, each connected to one of the upper connectors for extending upward to a wellhead;
three lower connectors mount at a lower end of the housing, each of the internal control lines being connected to one of the lower connectors; and
three lower control lines, each connected to one of the lower connectors for extending downward to a downhole element.

11. The system according to claim 10 , further comprising:
a controller adapted to be mounted adjacent the wellhead; and
wherein the upper control lines extend to the controller.

12. The system according to claim 10 , wherein:
at least one of the internal control lines comprises an insulated electrical wire; and
the ferrous component comprises a steel outer layer surrounding the insulated electrical wire.

13. The system according to claim 10 , wherein:
at least one of the internal control lines comprises a fiber optic line; and
the ferrous component comprises a steel tube surrounding the fiber optic line.

14. The system according to claim 10 , wherein:
at least one of the internal control lines comprises a steel tube having a passage for conveying a fluid; and
the ferrous component comprises the steel tube.

15. An electrical submersible pumping (“ESP”) system comprising:
a well fluid pump;
a three-phase motor operatively connected to the pump and comprising;
a housing having a longitudinal axis;
a stack of motor laminations mounted in the housing for non rotation relative to the housing, the motor laminations having axially aligned slots spaced circumferentially around a bore;
motor windings wound through the slots for receiving three-phase power provided to the motor;
three internal control lines, each extending axially through one of the slots along with some of the windings, the internal control lines being spaced 120 degrees apart from each other relative to the axis;
each of the internal control lines having a ferrous component that is influenced by electromagnetic fields produced by the windings;
three upper connectors mounted at an upper end at the housing, each of the internal control lines being connected to one of the upper connectors;
three upper control lines, each connected to one of the upper connectors for extending upward to a wellhead;
three lower connectors mount at a lower end of the housing, each of the internal control lines being connector to one of the lower connectors; and
three lower control lines, each connected to one of the lower connectors for extending downward to a downhole element.

16. The system according to claim 15 , further comprising:
a controller adapted to be mounted adjacent the wellhead; and
wherein the upper control lines extend to the controller.

17. The system according to claim 15 , wherein:
at least one of the internal control lines comprises an insulated electrical wire; and
the ferrous component comprises in a steel outer layer surrounding the insulated electrical wire.

18. The system according to claim 15 , wherein:
at least one of the internal control lines comprises a fiber optic line; and
the ferrous component comprises a steel tube surrounding the fiber optic line.

19. The system according to claim 15 , wherein:
at least one of the internal control lines comprises a steel tube having a passage for conveying a fluid; and
the ferrous component comprises the tube.

Assignees

• Baker Hughes A Ge Co Llc

Inventors

• Strattan Scott C
• Lawson Peter F
• Cain Sean A
• Knapp John M

Classifications

• E21B43/128 Primary

  Adaptation of pump systems with down-hole electric drives · CPC title

• E21B17/023

  Arrangements for connecting cables or wirelines to downhole devices · CPC title

• F04D13/10

  adapted for use in mining bore holes · CPC title

• F04D15/0281

  responsive to a condition not otherwise provided for · CPC title

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title