Patent ID: 8316942
Filing Date: 2012-11-27
Classification: E21B,F04B

Abstract:
1. An apparatus for removing liquid from a well having an inclined branch that produces a branch produced liquid that flows into a sump, the sump producing a sump produced liquid, comprising: an electrical submersible pump assembly adapted to be positioned in the sump so as to pump branch produced and sump produced liquids from the sump, the pump assembly comprising a first pump, a second pump, and a motor, the second pump being mounted in the pump assembly below the first pump and above the motor for drawing the sump produced liquid past the motor; a flow ratio device mounted to the submersible pump assembly that controls a ratio of the branch produced and sump produced liquids pumped by the pump assembly to assure a desired flow of sump produced liquids past the motor for cooling, the flow ratio device comprising a seal surrounding the pump assembly below an inlet of the first pump and above the motor for sealing between the pump assembly and a side wall of the sump, preventing the flow of branch produced liquid below the inlet, and the second pump having a discharge above the seal in communication with the inlet of the first pump.