ARMORED SUBMERSIBLE Power CABLE > 자유게시판

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In the instance of FIG. 6, the cable 610 with the circular cross-sectional form has an area 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 quantity and a bigger surface area when compared to the cable 610. A smaller quantity can provide for a smaller mass and, for example, much less tensile stress on a cable that may be deployed a distance in a downhole setting (e.g., low voltage armored power cable due to mass of the cable itself). As shown in FIG. 6, the cable 610 includes a circular cross-sectional shape whereas the cable 630 contains an oblong cross-sectional shape. In some embodiments, an insulation shield could also be strippable (e.g., to allow for termination and electrical testing of the cable). In the example of FIG. 10, the end assemblies type somewhat "D" shapes (e.g., one being a backward "D") while the middle or intermediate meeting varieties a somewhat elongated "0" shape.

In FIG. 7, the instance cable seven-hundred can embrace EPDM insulation because the insulation 730, which can have a wall thickness of roughly 1.6 mm (e.g., approximately 0.065 inch), can include a lead (Pb) shield because the metallic shield 750, which might have a wall thickness of approximately 0.6 mm (e.g., roughly 0.025 inch), can include crosslinked polyethylene because the cushion layer 760 and might embody metallic armor (e.g., galvanized) because the armor layer 780, which might have a wall thickness of roughly 0.Four mm (e.g., approximately 0.015 inch). For instance, in some flat energy cable embodiments, two or extra particular person coated conductors might be organized in a side-by-facet configuration (e.g., consider configurations akin to 2×1, 3×1, 4×1, and so on.) and, for instance, a number of armor layers may be utilized over a jacket. For example, a barrier layer can be a layer exterior to a shield (e.g., an insulation shield layer) which will goal to provide extra safety from corrosive downhole gases and fluids. In the cable 630, the conductors 632 could also be about 7.35 mm (e.g., about 1 AWG) in diameter with insulation of about 2 mm thickness, metallic lead (Pb) of about 1 mm thickness (e.g., as a fuel barrier layer), a jacket layer (e.g., the layer 634) over the lead (Pb) of about 1 mm thickness at ends of the cable 630, optionally available armor of about 0.5 mm thickness and an optionally available polymeric layer of about 1 mm thickness (e.g., the layer 636 as an outer polymeric coat).

In such an example, the growth might trigger the cable a thousand to bulge such that the armor 1080 separates. In the instance of FIG. 9, the edge 784 might be in direct contact with the cushion layers 760-1, 760-2 and 760-three where bending may occur of the armor 780 with power against a number of of the layers 760-1, 760-2 and 760-3 the place the layers 760-1 and 760-three might receive a larger quantity of the pressure than the layer 760-2. Thus, indentation danger could be greater for the layers 760-1 and 760-3, which can be thought-about the outermost layers. In such an example, the polymeric layer 634 might encapsulate the three 1 gauge conductors and their respective layers the place, at ends, the polymeric layer 634 may be about 1 mm thick. For example, as to the cable 630, consider three 1 gauge conductors (e.g., a diameter of about 7.35 mm) with varied layers. This was a sea cable that needed to withstand the pressures of the depth in addition to help its own free weight throughout set up. Fatigue in the lead (Pb) barrier layer might be, at the very least partially, resulting from cyclic stress and strain as may be brought on by vibration of a cable throughout operation (e.g., consider fluid and/or motor induced vibrations).

As an example, a metallic shield layer could also be applied over an insulation shield layer. In keeping with an embodiment, one or more pc-readable media might include computer-executable instructions to instruct a computing system to output info for controlling a process. The SYNCURE™ system is a two-step, silane-grafted, moisture cross-linkable high density polyethylene system (XLPE). Therefore the high melting point of PP in comparison with that of XLPE contributes to improvement within the thermal stability and chemical compatibility of uncured XLPE. In some embodiments, one or more jacket layer compounds may be oil and/or water and/or brine and/or thermal and/or decompression resistant. PP has the next melting level than XLPE, which might present thermal stability at a temperature above the melting point of XLPE (e.g., above roughly a hundred and fifty degrees C.) yet lower than the melting point of PP. For example, armor can embrace a strap thickness, which could also be singly or multiply applied (e.g., double, triple, and so forth.). In FIG. 7, the cushion layer 760 is exterior to the metallic shield 750 such that it could actually mechanically cushion the metallic shield 750. For instance, the cushion layer 760 can mechanically cushion the metallic shield 750 from force that can be utilized by and/or carried out by the armor of the armor layer 780, which could also be, for instance, a galvanized metallic armor.