HIGH TEMPERATURE MONITORING SYSTEM FOR ESP

• US 20100047089A1
• Filed: 12/30/2008
• Published: 02/25/2010
• Est. Priority Date: 08/20/2008
• Status: Abandoned Application

• Current Assignee: Schlumberger Technology Corporation (SLB)
• Original Assignee: Schlumberger Technology Corporation (SLB)
• Inventors: Booker, John, Watson, Arthur, Dorel, Alain, Kyin, Albert, Veneruso, Anthony, Ross, Allan, Sukianto, Harryson
• Application Number:
  US12/346,434
• Publication Number:
  US 20100047089A1
• Time in Patent Office: Days
• US Class Current: 417/410.100
• CPC Class Codes: E21B 47/008 Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
• CPC Class Codes: F04D 13/10 adapted for use in mining bore holes
• CPC Class Codes: F04D 15/0263 the condition being temperature, ingress of humidity or leakage
• CPC Class Codes: G01K 13/08 in rotary movement

Abstract

An electric submersible pump device, comprising an electric motor having stators and coils; a pump coupled with the electric motor; a thermocouple or RTD for measuring temperature of the motor windings.

Claims

1. An electric submersible pump device, comprising:

an electric motor having stators and coils;

a pump coupled with the electric motor;

a thermocouple or RTD for measuring temperature of the motor windings.

2. The electric submersible pump device of claim 1, comprising:

a bottom hole pressure sensor coupled therewith.

3. The electric submersible pump device of claim 1, comprising:

a bottom hole temperature sensor coupled therewith.

4. The electric submersible pump of claim 1, wherein the thermocouple or RTD is at the bottom end of a stator or the motor.

5. The electric submersible pump of claim 1, wherein the thermocouple or RTD is inserted in motor oil surrounding the motor windings.

6. The electric submersible pump device of claim 1, wherein the thermocouple or RTD is inside a winding slot of the motor windings.

8. The electric submersible pump device of claim 3, wherein the bottom hole temperature sensor is mounted above the pump.

9. The electric submersible pump device of claim 3, wherein the bottom hole temperature sensor is mounted below the motor.

10. The electric submersible pump device of claim 3, wherein the bottom hole temperature sensor is mounted between the motor and the pump.

11. The electric submersible pump device of claim 3, wherein the bottom hole temperature sensor and the thermocouple or RTD is connected using a 7-wire conductor cable.

12. The electric submersible pump device of claim 1, comprising a power cable coupled with the electric submersible motor, and a cable to surface portal that provides an entry point for the power cable.

18. The electric submersible pump device of claim 1, wherein the pump is a centrifugal pump.

19. The electric submersible pump device of claim 18, wherein the pump comprises a plurality of impellers and a plurality of diffusers.

7. The electric submersible pump device of claim 7, wherein the thermocouple or RTD is inserted from the top of the motor.

13. A method for optimizing an electric submersible pump device, the electric submersible pump device including a pump and an electric submersible motor couple with the pump, the method comprising:

detecting bottom hole pressure and detecting motor winding temperature;

optimizing performance of the electric submersible pump device based on the detected bottom hole pressure and detected motor winding temperature.

14. The method of claim 13, wherein the detected winding temperature is used to determine that the motor is overheated and to correspondingly stop the motor.

15. The method of claim 13, wherein a current is supplied from a controlled source at surface, the current being a constant current.

16. The method of claim 13, comprising:

detecting bottom hole pressure.

17. The method of claim 16, comprising:

optimizing the electric submersible pump device performance based on the detected bottom hole pressure.