Patent ID: 9638015
Date: 2017-05-02
CPC Classifications: E21B,F04D

Claim:
1. An electric submersible pump (ESP) assembly comprising: an inverted shroud separating a centrifugal ESP pump from a well casing, the centrifugal ESP pump rotatably coupled to an ESP motor; the inverted shroud having an opening on an upstream terminal side, the upstream terminal side terminating at a head of the ESP motor; at least a portion of the ESP motor extending through the opening; the portion of the ESP motor extending through the opening exposed to working fluid; the opening sealed to the working fluid at the head of the ESP motor, the head of the ESP motor tapered and wedged to the inverted shroud; and the inverted shroud forming a working fluid pathway that extends upwards passed a housing of the ESP motor and upward along an outer diameter of the inverted shroud, proceeds through an inlet of the inverted shroud to an inner diameter of the inverted shroud, makes a turn to extend downwards from the inlet along the inner diameter of the inverted shroud to an intake of the centrifugal ESP pump, and after entering the intake continuing upwards through production tubing.