Delta-Shaped Power Cable Within Coiled Tubing

摘要

A power cable assembly supplies power to and suspends in a well an electrical well pump. The assembly includes metal tubing having a longitudinal tubing center line and a cylindrical side wall. Power cable has an exterior delta shape when viewed in a cross-section. The delta shape defines three exterior side surfaces that face radially outward and join each other at corners. Power cable has three insulated power conductors wrapped helically with a metal strip. The power cable is located in the tubing with the corners deformed against an inner diameter of the tubing.

主权项

1. An electrical submersible well pump assembly, comprising:
a pump driven by an electrical motor; a string of coiled tubing connected to the well pump assembly and adapted to extend to an upper end of a well to support the pump and motor in the well; a power cable installed in the coiled tubing, the power cable having three insulated. conductors twisted about each other along a power cable center line, the power cable having a polygonal shape in cross-section, defining a plurality of exterior side surfaces that face radially outward relative to the power cable center line, the side surfaces joining each other at rounded corners, and the side surfaces having equal widths between the corners; and wherein the corners of the power cable are deformed against an inner diameter of the coiled tubing.