Baker Hughes Oilfield Operations LLC

Mark Paquette

Zheng Ye

Risa Rutter

Ignacio Martinez

A submersible well pump has a rotatable drive shaft extending through pump stages. Each of the stages has a diffuser, an impeller and a bushing fixed for non-rotation in the diffuser. A thrust member has a lower side in sliding rotating engagement with the upward facing surface of the bushing. The bushing and the thrust member are of a harder material than the diffuser and the impeller. A drive member of a softer material than the thrust member is in engagement with the thrust member and has a drive member bore through which the shaft extends. A key extends through the shaft groove, the impeller groove and the drive member groove to cause the impeller and thrust member to rotate with the shaft.

Thrust runner for abrasion resistant bearing of centrifugal pump

An electrical submersible well pump has upper and lower diffusers non-rotatably mounted in a housing. A rotatable impeller between the upper and lower diffusers has a bottom shroud. An outward-facing wall is on an upper end of the lower diffuser. A lower end of the upper diffuser has an inward-facing wall that fits closely around the outward-facing wall of the lower diffuser. A key mounted between the inward-facing and outward-facing walls prevents relative rotation between the diffusers. The key extends axially above an upper end of the neck and radially inward from the inward-facing wall of the upper diffuser into close proximity to the bottom shroud, creating a sand dam.

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Claremore, OK, United States of America

Mark Paquette