Delta-Shaped Power Cable Within Coiled Tubing
AssigneeBaker Hughes Incorporated
InventorsLarry V. Dalrymple, David H. Neuroth
Life of this patent
Estimating the term…
Abstract
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.
Claims19
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.
An assembly for supplying power to and suspending in a well an electrical well pump, the assembly comprising:
- metal tubing having a cylindrical side wall;
- a power cable installed within the tubing and having three insulated conductors twisted about each other along a power cable center line;
- a metal strip wrapped helically around the three power conductors, the metal strip having overlapping edges, defining an exterior delta shape for the power cable when viewed in a cross-section perpendicular to the power cable center line, the delta shape having three exterior side surfaces that face radially outward relative to the power cable center line, the side surfaces joining each other at rounded corners;
- and wherein
- the rounded corners are deformed against an inner diameter of the tubing.
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, the coiled tubing having a cylindrical side wall and a longitudinally extending weld seam in the side wall;
- a power cable within the tubing, the power cable having three insulated conductors twisted around each other along a power cable center line;
- a metal strip helically wrapped around the three insulated conductors, defining an equilateral traingular shape in cross-section, having three exterior side surfaces that face radially outward relative to the power cable center line, the side surfaces joining each other at rounded corners;
- and wherein
- the jacket and the conductors are located in the coiled tubing with the corners deformed against an inner diameter of the coiled tubing.
Dependencies are inferred from the claim text.