US 12,085,086 B2
Bearings for electric submersible pumps
Pradeep Mahadevan, Singapore (SG); TengFei Wang, Singapore (SG); Raju Ekambaram, Singapore (SG); Kean Wee Cheah, Singapore (SG); Sethuraj Arumugam, Singapore (SG); and Kim Hoo Goh, Singapore (SG)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Appl. No. 17/753,792
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
PCT Filed Sep. 18, 2020, PCT No. PCT/US2020/051405
§ 371(c)(1), (2) Date Mar. 15, 2022,
PCT Pub. No. WO2021/055686, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 10201908720Y (SG), filed on Sep. 19, 2019.
Prior Publication US 2022/0341435 A1, Oct. 27, 2022
Int. Cl. F04D 29/046 (2006.01); E21B 43/12 (2006.01); F04D 13/10 (2006.01); F16C 17/02 (2006.01)
CPC F04D 29/046 (2013.01) [E21B 43/128 (2013.01); F04D 13/10 (2013.01); F16C 17/02 (2013.01)] 17 Claims
OG exemplary drawing
 
6. An electric submersible pump (ESP) comprising:
a plurality of stages, each stage comprising an impeller and a diffuser disposed about a shaft, the diffuser having a central bore through which the shaft extends;
at least one of the plurality of stages comprising a bearing assembly comprising:
a bearing sleeve disposed about the shaft and configured to rotate with the shaft in use;
a bushing disposed radially between the bearing sleeve and a wall surrounding the central bore of the diffuser;
a key coupled to the bushing, the key configured to prevent or inhibit rotation of the bushing in operation; and
a retaining ring engaged with the key.