US 11,697,982 B2
Submersible canned motor pump
Christopher Wrighton, Inverurie (GB); Sakethraman Mahalingam, Aberdeen (GB); and Krzysztof Karol Machocki, Aberdeen (GB)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Aug. 25, 2020, as Appl. No. 17/2,434.
Prior Publication US 2022/0065081 A1, Mar. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 43/12 (2006.01); E21B 47/008 (2012.01); F04D 13/10 (2006.01); H02K 5/132 (2006.01); H02K 5/167 (2006.01); F04D 13/06 (2006.01); H02K 5/128 (2006.01)
CPC E21B 43/128 (2013.01) [E21B 47/008 (2020.05); F04D 13/0626 (2013.01); F04D 13/0633 (2013.01); F04D 13/10 (2013.01); H02K 5/1285 (2013.01); H02K 5/132 (2013.01); H02K 5/1675 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A system for producing fluids from a subterranean well, the system comprising:
an electrical submersible pump assembly with a motor-pump unit, where the motor-pump unit has:
a motor housing, the motor housing being an elongated member;
a stator located within the motor housing, the stator having a stator body with an interior cavity extending along a central axis of the stator;
a rotor assembly located within the interior cavity of the stator, the rotor assembly comprising a rotor shaft, a rotor member, and an intermediate rotor bearing assembly, where the rotor member and the intermediate rotor bearing assembly circumscribe the rotor shaft;
an impeller mounted on the rotor shaft and located within the interior cavity of the stator, where the impeller circumscribes the rotor shaft; and
a liner located along an interior surface of the interior cavity, the liner being a thin walled member that is secured to the motor housing and hermetically seals the stator body from a wellbore fluid; where the liner has a polygonal cross section.