US 11,788,391 B2
Motorized pump
Jinjiang Xiao, Dhahran (SA); Rafael Adolfo Lastra Melo, Dhahran (SA); and Chidirim Enoch Ejim, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Dec. 10, 2021, as Appl. No. 17/548,306.
Application 17/548,306 is a division of application No. 15/998,829, filed on Aug. 16, 2018, abandoned.
Prior Publication US 2022/0098961 A1, Mar. 31, 2022
Int. Cl. E21B 43/12 (2006.01); F04B 47/06 (2006.01); F04D 13/10 (2006.01); H02K 5/132 (2006.01); H02K 1/2791 (2022.01)
CPC E21B 43/128 (2013.01) [F04B 47/06 (2013.01); F04D 13/10 (2013.01); H02K 1/2791 (2022.01); H02K 5/132 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method of operating an electrical submersible pump (ESP) comprising a motorized pump, the method comprising:
pumping, by the ESP comprising the motorized pump, fluid from a wellbore, wherein the motorized pump is disposed in the wellbore; and
discharging the fluid from a longitudinal end portion of the motorized pump, wherein the motorized pump comprises:
a motor comprising a motor rotor and a motor stator, wherein the motor stator is a single motor stator that extends axially continuously through multiple stages of the motorized pump; and
a pump that radially encloses the motor, wherein the pump comprises a pump stator radially surrounding a pump rotor comprising pump rotor vanes integrated with the motor rotor, the motor rotor and the pump rotor rotating together, the pump rotor rotating radially inside the pump stator radially surrounding the pump rotor, wherein pumping the fluid comprises the pump rotor vanes engaging pump stator vanes on an inside diameter of the pump stator, wherein the pump is a screw pump,
wherein the pump stator vanes do not radially overlap with the pump rotor vanes, wherein a radial gap between the pump stator vanes and the pump rotor vanes extends axially continuously through a stage of the pump.