US Patent:
20200340481, Oct 29, 2020
Inventors:
- Houston TX, US
Gary Williams - Tulsa OK, US
Ameen Muhammed - Claremore OK, US
Zheng Ye - Claremore OK, US
Risa Rutter - Claremore OK, US
Yong Li - Claremore OK, US
Shawn Gunter - Tulsa OK, US
Assignee:
Baker Hughes Oilfield Operations LLC - HOUSTON TX
International Classification:
F04D 13/08
F04D 29/046
F04D 29/44
F04D 1/06
E21B 43/12
Abstract:
A well fluid pump has a housing with a stator having a stack of discs through which windings extend. First and second stage modules in a bore of the stator have rotating impellers and non-rotating diffusers. Magnets mounted in each of the stage modules rotate the impellers in response to electromagnetic fields generated by the windings. Anti-rotation members join adjacent ones of the impellers together in each of the stage modules for rotation in unison. A bearing assembly between the first and second stage modules has a rotatable inner portion in engagement with the impellers in the first and second stage modules for causing them to rotate in unison. The bearing assembly has a non-rotating outer portion in engagement with the stator to prevent rotation.