Claims
- 1. An electric submersible pump assembly disposable in a wellbore, comprising:a motor having a motor shaft; a pump energized in response to the motor shaft, comprising: a pump stator; and a pump rotor rotated by the motor shaft; and a latch device disposed between the motor shaft and the pump rotor, comprising: a pump latch connector connected to the pump comprising: a rotor connector box attached to the pump rotor; and a stator connector pin attached to the pump stator; and a motor latch connector connected to the motor, comprising: a stator connector box interconnected to the stator connector pin; and a rotor connector pin disposable in the rotor connector box such that the motor shaft transfers torque to the rotor.
- 2. An electric submersible pump assembly disposable in a wellbore, comprising:a motor assembly comprising: a motor service section housing; and a motor, including a motor shaft disposed in the motor service section housing; a pump energized in response to the motor, comprising: a pump stator; a pump rotor with a lower end portion disposed in the pump stator; and a rotor coupling attached to the lower end portion of the pump rotor; and a latch device disposed between the motor assembly and the pump, comprising: a rotor connector box comprising: a device body, with an engaging member, having an upper end portion, a lower end portion, and defining a central cavity; a rotor connector pin attached to the motor shaft, comprising a device body, with an engaging member, having an upper end portion and a lower end portion, wherein the device body is disposable in the rotor connector box central cavity.
- 3. The electric submersible pump assembly of claim 2, the rotor connector pin further comprising:a guide pin proximate the upper end portion of the rotor connector box device body disposable in the rotor connector box central cavity; and a threaded means on the lower end portion of the rotor connector pin device body for connecting the rotor connector pin to the motor shaft such that the motor shaft is capable of torque transfer to the pump rotor.
- 4. The electric submersible pump assembly of claim 3, the rotor connector box further comprising:a threaded means on the upper end portion of the rotor connector box device body for connecting the rotor connector box to the rotor coupling; and a guide shoe proximate to the lower end portion of the rotor connector box device body.
- 5. The electric submersible pump assembly of claim 4, the latch device further comprising:a stator connector pin attached to the pump stator, the stator connector pin comprising a device body, with an engaging member, having an upper end portion, a lower end portion, and defining a central cavity.
- 6. The electric submersible pump assembly of claim 5, the latch device further comprising:a stator connector box attached to the motor service section housing, the stator connector box comprising a device body, with an engaging member, having an upper end portion, a lower end portion, and defining a central cavity wherein the upper end portion interconnects with the stator connector pin.
- 7. The electric submersible pump assembly of claim 6, the stator connector pin further comprising:a threaded means on the upper end portion of the device body for connecting the stator connector pin to the pump stator; and a guide means on the lower end portion of the device body.
- 8. The electric submersible pump assembly of claim 7, the stator connector box further comprising:a guide means proximate to the upper end portion of the device body interconnected with the stator connector pin; and a connector means proximate to the upper end portion of the device body for connecting the stator connector box to the motor assembly.
- 9. An electric submersible pump assembly disposable in a wellbore, comprising:a motor assembly comprising: a motor service section housing; and a motor, including a motor shaft disposed in the motor service section housing; a pump that is energized in response to the motor, comprising: a pump stator; a pump rotor with a lower end portion, disposed in the pump stator; and a rotor coupling that is attached to the lower end portion of the pump rotor; a pump latch connector connected to the pump comprising: a rotor connector box comprising: a device body having an upper end portion, a lower end portion, and defining a central cavity; a threaded means within the central cavity of the upper end portion of the device body for connecting the rotor connector box to the pump rotor; a guide means within the central cavity of the lower end portion of the device body; and a guide shoe within the central cavity of the lower end portion of the device body proximate to the guide means; and a stator connector pin comprising: a device body having an upper end portion, a lower end portion, and defining a central cavity; a threaded means on the upper end portion of the device body for connecting the stator connector pin to the pump stator; and a guide means on the lower end portion of the device body; and a motor latch connector connected to the motor comprising: a stator connector box comprising: a device body having an upper end portion, a lower end portion, and defining a central cavity; a guide means within the central cavity of the upper end portion of the device body for interconnecting with the guide means of the stator connector pin; a connector means on the upper end of the device body for connecting the stator connector box to the motor; and a rotor connector pin comprising: a guide pin disposable in the central cavity of the rotor connector box; a base; a guide means on the guide pin proximate the base for guiding the rotor connector pin into the guide means of the rotor connector box; and a threaded means proximate to the base for connecting the rotor connector pin to the motor shaft such that the motor shaft is capable of torque transfer to the pump rotor.
- 10. A latch device for use with an electric submersible pump assembly disposed between a motor assembly and a pump, comprising:a rotor connector box comprising: a device body, with an engaging member, having an upper end portion, a lower end portion, and defining a central cavity; and a rotor connector pin attached to the motor shaft, comprising a device body, with an engaging member, having an upper end portion and a lower end portion, wherein the device body is disposable in the rotor connector box central cavity.
- 11. The latch device of claim 10, the rotor connector pin further comprising:a guide pin proximate the upper end portion of the rotor connector box device body disposable in the rotor connector box central cavity; and a threaded means on the lower end portion of the rotor connector pin device body for connecting the rotor connector pin to the motor shaft such that the motor shaft is capable of torque transfer to the pump rotor.
- 12. The latch device of claim 11, the rotor connector box further comprising:a threaded means on the upper end portion of the rotor connector box device body for connecting the rotor connector box to the rotor coupling; and a guide shoe proximate to the lower end portion of the rotor connector box device body.
- 13. The latch device of claim 12 further comprising:a stator connector pin attached to the pump stator, the stator connector pin comprising a device body having an upper end portion, a lower end portion, and defining a central cavity.
- 14. The latch device of claim 13 further comprising:a stator connector box attached to the motor service section housing, the stator connector box comprising a device body, having an upper end portion, a lower end portion, and defining a central cavity, wherein the upper end portion interconnects with the stator connector pin.
- 15. The latch device of claim 14, the stator connector pin further comprising:a threaded means on the upper end portion of the device body for connecting the stator connector pin to the pump stator; and a guide means on the lower end portion of the device body.
- 16. The latch device of claim 15, the stator connector box further comprising:a guide means proximate to the upper end portion of the device body interconnected with the stator connector pin; and a connector means proximate to the upper end portion of the device body for connecting the stator connector box to the motor assembly.
- 17. A method for locating an electric submersible pump assembly with a motor, a pump, and an latch device, including a pump latch connector and a motor latch connector, for use in a wellbore to pressurize a production stream for production at a surface, the method comprising:locating the motor and the motor latch connector in the wellbore; disposing the pump and the pump latch connector in the wellbore such that it interconnects with the motor latch connector; powering the motor to facilitate rotation of the motor; transferring torque from the motor to the pump through the motor latch connector and the pump latch connector to allow the production stream to pass through the pump in the electric submersible pump assembly; and pressurizing the production stream to facilitate the movement of the production stream to the surface.
- 18. An electric submersible pump assembly disposable in a wellbore, comprising:a motor assembly comprising: a motor service section housing; and a motor, including a motor shaft disposed in the motor service section housing; a pump energized in response to the motor, comprising: a pump stator; a pump rotor with a lower end portion disposed in the pump stator; and a rotor coupling attached to the lower end portion of the pump rotor; and a latch device disposed between the motor assembly and the pump, comprising: a pump latch connector connected to the pump comprising: a rotor connector box comprising: a device body having an upper end portion, a lower end portion, and defining a central cavity; a threaded means within the central cavity of the upper end portion of the device body for connecting the rotor connector box to the pump rotor; a guide means within the central cavity of the lower end portion of the device body; and a guide shoe within the central cavity of the lower end portion of the device body proximate to the guide means; and a stator connector pin comprising: a device body having an upper end portion, a lower end portion, and defining a central cavity; a threaded means on the upper end portion of the device body for connecting the stator connector pin to the pump stator; and a guide means on the lower end portion of the device body; and a motor latch connector connected to the motor comprising: a stator connector box comprising: a device body having an upper end portion, a lower end portion, and defining a central cavity; a guide means within the central cavity of the upper end portion of the device body for interconnecting with the guide means of the stator connector pin; and a connector means on the upper of the device body for connecting the stator connector box to the motor; and a rotor connector pin comprising: a guide pin disposable in the central cavity of the rotor connector box; a base; a guide means on the guide pin proximate the base for guiding the rotor connector pin into the guide means of the rotor connector box; and a threaded means proximate to the base for connecting the rotor connector pin to the motor shaft such that the motor shaft is capable of torque transfer to the pump rotor.
RELATED APPLICATIONS
This application claims priority to Provisional Application Ser. No. 60/292,724 entitled “Electric Submersible Motor and Progressive Cavity Pump Assembly” filed May 21, 2001.
US Referenced Citations (13)
Foreign Referenced Citations (1)
Number |
Date |
Country |
197 15 278 A 1 |
Mar 1998 |
DE |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/292724 |
May 2001 |
US |