Electrical submersible pumping systems

An electric submersible pumping system comprising:

• a housing defining a fluid intake and a fluid discharge;
• a stator disposed radially within the housing;
• one or more pump/motor stacks disposed radially within the stator, each pump/motor stack of the one or more pump/motor stacks comprising:
• one or more impeller/diffuser stages, each impeller/diffuser stage comprising:
• a diffuser in a locked position with respect to the stator;
• and
• an impeller disposed adjacent the diffuser, wherein the impeller comprises one or more magnetic components, and wherein application of electric power to the stator causes rotation of the impeller relative to the stator;
• a thrust bearing disposed radially between a shaft and an interior bore of a diffuser of an impeller/diffuser stage of the one or more impeller/diffuser stages, wherein the shaft extends axially through the one or more impeller/diffuser stages;
• and
• at least one radial bearing disposed radially between the shaft and an interior bore of a diffuser of a respective impeller/diffuser stage of the one or more impeller/diffuser stages.

An electric submersible pumping system comprising:

• a housing defining a fluid intake and a fluid discharge;
• a stator disposed radially within the housing;
• one or more pump/motor stacks disposed radially within the stator, each pump/motor stack of the one or more pump/motor stacks comprising a plurality of impeller/diffuser stages, each impeller/diffuser stage comprising:
• a diffuser in a locked position with respect to the stator;
• and
• an impeller disposed adjacent the diffuser, wherein the impeller comprises one or more magnetic components, and wherein application of electric power to the stator causes rotation of the impeller relative to the stator;
• wherein at least two of the impeller/diffuser stages comprise a radial/thrust bearing configured to support radial and thrust loads of the plurality of impeller/diffuser stages.