Downhole cables and methods of making the same
A downhole cable that has a cable core with an inner jacket located about it. The inner jacket has a shell located thereabout, and a pair of strength member layers surrounds the inner shell. Interstitial spaces of the strength member layers are filled with bonding layers. One of the strength member layers is at a contra-helical lay angle to the other. An outer jacket is located about one of the strength member layers, and the outer jacket is bonded with the bonding layers.
1. A metal-clad cable, wherein the metal-clad cable comprises:
a cable core comprising:
a center component;
a plurality of conductors wrapped about the center component and at least partially embedded therein;
a plurality of elements located in spaces formed between the plurality of conductors; and
a foam located about the center component, the plurality of conductors, and the plurality of elements;
an outer jacket located about the cable core; and
a metallic tube located about the outer jacket, wherein an interior portion of the metallic tube at least partially embeds into the outer jacket.
2. The metal-clad cable of claim 1 , wherein the foam fills the cable core and traps air therein.
3. The metal-clad cable of claim 1 , wherein the plurality of elements is empty tubes, tubes with insulated conductors located therein, tubes with optical fibers located therein, or combinations thereof.
4. The metal-clad cable of claim 1 , wherein the foam is a foamed polymer.