Bidirectional piston seals with pressure compensation

An electric submersible pumping system for use in pumping fluids from a wellbore includes a motor, a pump driven by the motor, and a fluid expansion module connected to the motor. The fluid expansion module includes a piston seal housing and a piston assembly contained within the piston seal housing...

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Bibliographic Details
Main Authors Wang, Chengbao, Reeves, Brian Paul, Wang, Jifeng, Samudrala, Omprakash
Format Patent
LanguageEnglish
Published 19.11.2019
Subjects
BLASTING
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
ELECTRICITY
FIXED CONSTRUCTIONS
GENERATION
HEATING
LIGHTING
MECHANICAL ENGINEERING
MINING
NON-POSITIVE DISPLACEMENT PUMPS
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:An electric submersible pumping system for use in pumping fluids from a wellbore includes a motor, a pump driven by the motor, and a fluid expansion module connected to the motor. The fluid expansion module includes a piston seal housing and a piston assembly contained within the piston seal housing. The piston assembly includes a piston body having an exterior surface, a plurality of seals connected to the exterior surface of the piston body and a pressure equalization system. The pressure equalization system reduces a pressure differential between fluid in an annular space between the plurality of seals and fluid surrounding the first piston assembly.
Bibliography:Application Number: US201715632310