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US 2018/0149173 A1Published application
Electrical submersible motor
OwnerPhilip HEAD, Hassan MANSIRinventors
Life of this patent
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Abstract
A fluid system for a pump, which includes a downhole rotating shaft and bearings inside a housing, and where a fluid volume around shaft is circulated from outside housing through a filter, so that only clean non-abrasive fluid is permitted inside fluid volume pump to draw fluid around the shaft. A fluid expeller is included to expel fluid from the accumulated volume of fluid through the filter to purge the filter.
Claims9
A fluid system for a pump, which includes:
- a downhole rotating shaft and bearings inside a housing, a fluid volume around the shaft, a circulating fluid from outside the housing through a filter, such that only clean non-abrasive fluid is permitted inside fluid volume pump to draw fluid around the shaft.
Dependencies are inferred from the claim text.