As an example, a layer 762 may be an additional cushion layer 762 that surrounds the three cushion layers 760 of the grouped assemblies, which might further assist to protect the metallic shields 750 from an armoring course of. In FIG. 7, the **ductor 710 ** be a strong copper **ductor, the insulation 730 will be an EPDM-primarily based insulation, the metallic shield 750 ** be a metallic lead (Pb) shield (e.g., a lead (Pb) layer), the cushion layer 760 may be a**ruded polyethylene layer that has achieved a desired amount crosslinked (e.g., crosslinked polyethylene "XLPE") and the armor layer 780 ** be a metallic armor. For example, the cushion layer 760 will be formed as a tube outlined at least partially by a wall thi**ess and an inside cross-part dimension (e.g., an inside diameter) and/or an outer cross-section dimension (e.g., an outer diameter). For example, a cushion layer may be characterized at the least partially by hoop energy. In such an example, an non-**pulsory armor layer may be of a thi**ess of about 0.5 mm.
In such an instance, the protective layer is usually a cushion layer that ** be a**ruded cushion layer that features XLPE and optionally a number of additional supplies (e.g., PP, talc, carbon black, and so on.). In such an instance, the metallic shield layer could serve as a ground plane. In some embodiments, an insulation layer and insulation shield layer may be co-extruded through pressure extrusion and cured using suitable cure methods with **siderably related cure rates. In some embodiments, a mixture of extruded and taped layers may be used to form the barrier layer. In other embodiments, an insulation shield layer could also be tandem extruded with an insulation layer. In some embodiments, an insulation shield could also be strippable (e.g., to allow for termination and electrical testing of the cable). As an example, insulation and shield may be strippable as a unit, for instance, where substantially cross-linked at an interface between the insulation and the shield. As an example, a metallic shield layer could also be formed from a lot of metallic supplies together with, but not restricted to: copper, aluminum, lead, and alloys thereof. Additionally, low value fillers or additives ** be **pounded right into a cushion layer material to further cut back materials cost.
As talked about, an individual cushion layer may en**pass an individual one of a metallic shield the place such a cushion layer may be **siderably circular in shape, substantially pie shaped, or another form. As an example, a lead (Pb) based barrier layer could be a metallic shield layer that ** also serve as a floor aircraft. For example, carbon black could make a crosslinked polyethylene cushion layer more opaque and of a coloration that tends to be **stant. For example, an insulation shield layer ** optionally be a semi-**ductive layer utilized over an insulation layer to reduce electrical stresses in a cable. As mentioned, the shape of a cushion layer may be **siderably circular or of one other form akin to, for example, substantially pie formed the place it may en**pass a substantially pie shaped metallic barrier layer (e.g., a lead (Pb) barrier layer). For example, a barrier layer could be a layer exterior to a shield (e.g., an insulation shield layer) that will aim to provide additional safety from corrosive downhole gases and fluids. As an example, a cable may carry energy, at times, for instance, with amperage of up to about 200 A or more.
In the instance of FIG. 6, the cable 610 with the circular cross-sectional shape has an space of unity and the cable 630 with the oblong cross-sectional form has space of about 0.82. As to perimeter, where the cable 610 has a perimeter of unity, the cable 630 has a perimeter of about 1.05. Thus, the cable 630 has a smaller volume and a larger floor area when in **parison with the cable 610. A smaller quantity ** present for a smaller mass and, for example, less tensile stress on a cable that may be deployed a distance in a downhole surroundings (e.g., on account of mass of the cable itself). For instance, the facility cable 701 ** include armor where the cushion layer 760 helps to guard one or more metallic shields from deformation attributable to pressure imparted throughout an armoring course of and the facility cable 702 ** embody armor the place the cushion layers 760 and/or the cushion layer 762 assist to guard one or more metallic shields from deformation as a result of drive imparted throughout an armoring course of. The ** of the plot 1400 **firms that immersing the extruded XLPE movie in water for approximately 12 hours at approximately 80 degrees C. is efficient for a **pletely curing process.
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