Method of making a down-hole cable having a fluoropolymer filler layer

摘要

A system and method for a down-hole cable is provided. The down-hole cable includes an insulated conductor portion. A filler layer abuts and encapsulates the insulated conductor portion, wherein the filler layer is substantially formed with a foamable fluoropolymer. At least one additive is mixed with the foamable fluoropolymer filler layer. An armor shell is applied to the exterior of the foamable fluoropolymer filler layer with the at least one additive. A bond is formed between the foamable fluoropolymer filler layer with the at least one additive and an internal surface of the armor shell.

主权项

1. A method of making a down-hole cable, the method comprising the steps of:
extruding a pre-foamed foamable filler layer about an insulated conductor, wherein the pre-foamed foamable filler layer further comprises a fluoropolymer and an additive; applying an armor shell about the insulated conductor and the pre-foamed foamable filler layer with additive; pressure-testing the armor shell by pressurizing at least one cavity formed between the pre-foamed foamable filler layer with additive and the armor shell; and after pressure-testing, foaming the foamable filler layer with additive, wherein at least a portion of the foamed filler layer with additive bonds to an interior surface of the armor shell, wherein the foamed filler layer with additive withstands a pullout force at temperatures of temperatures above 200° C.