REDUNDANT ESP SEAL SECTION CHAMBERS

摘要

A seal section for use in a downhole submersible pumping system (100) includes redundant fluid separation mechanisms. The fluid separation mechanisms are bag seal assemblies (122, 124), labyrinth seals, pistons and bellows. The seal section further includes a shaft, one or more shaft seals and a bag support tube. An annulus between the shaft and the shaft support tube provides a fluid flow path from a motor to the fluid separation mechanisms.