Patent ID: 8985226
Filing Date: 2015-03-24
Classification: E21B

Abstract:
1. A pumping system for pumping well fluid from a borehole, the system comprising a production tube and an electric submersible pump assembly, the electric submersible pump assembly including a motor and a pump, the pump having an inlet and an outlet, and a tether for lowering the electric submersible pump assembly down the production tube into a deployed position, wherein the tube has an upper portion proximate an upper end thereof and an enlarged diameter portion below the upper portion, and the motor is located within the enlarged diameter portion in the deployed position, wherein the system includes a plurality of stabilising elements spaced apart around the electric submersible pump assembly and extending between the electric submersible pump assembly and the tube, the stabilising elements being arranged to space the motor from the production tube to define a conduit therebetween sufficient for the passage of the well fluid passing through the pump.