For example, put on of the ability cable four hundred may trigger a floor fault for a number of of its conductors. In some flat power cable embodiments, two or more individual coated conductors can be organized in a aspect-by-side configuration (e.g., a 2×1, 3×1, or 4×1 configuration) and an armor layer might be applied over a jacket. As a power cable may be higher than one hundred meters in size, or larger than 1,000 meters in size, reductions in a cross-sectional thickness of lead (Pb) can enable for substantial discount in weight, which, in turn, can facilitate manufacturing, transport, deployment, retrieval, and so forth. Further, a reduction in an quantity of lead (Pb) will be environmentally favorable as properly. For instance, a lead (Pb) based barrier layer (e.g., extruded lead, alloy tape, and many others.) may rupture the place a peroxide or peroxide related to radical polymerization generates decomposition products that stay inside an insulation layer on the time the lead (Pb) primarily based barrier layer is applied in regards to the insulation layer (e.g., straight or indirectly). For instance, if a number of decomposition products and/or degradation products inside an insulation layer construct up in an interior area, a fuel barrier layer can rupture.
Such an extruded lead (Pb) barrier layer tends to be quite efficient at inhibiting gas permeation. To protect a number of electrically insulated copper conductors, metallic lead (Pb) sheaths can be employed as a barrier layer to dam permeation of downhole media. For instance, a power cable for a downhole utility could embrace an extruded continuous metallic lead (Pb) barrier layer that aims to protect supplies interiorly disposed thereto from downhole media akin to, for example, one or more corrosive gases (e.g., consider CO2 and H2S). Such an strategy could scale back cable weight, for instance, when in comparison with cable weight for a cable that includes a number of metallic lead (Pb) layers as gasoline barrier layer or layers. In varied varieties of wells, well operations, etc., an electric submersible pump (ESP) energy cables and motor lead extensions (MLEs) may be uncovered to high temperatures and/or high focus of corrosive and sour gases and fluids. For example, the VSD unit 270 could receive power with a voltage of about 4.16 kV and control a motor as a load with a voltage from about 0 V to about 4.16 kV. In some embodiments, a energy cable might embody a number of conductors, an EPDM insulation layer disposed over each conductor, and a lead (Pb) barrier layer disposed over the EPDM insulated conductor(s).
A power cable can include a conductor; a lead (Pb) barrier layer disposed about the conductor; a cushion layer disposed concerning the lead (Pb) barrier layer where the cushion layer consists of crosslinked polyethylene (XLPE); and metallic armor wrapped in regards to the cushion layer. The cushion layer 760 may be made of one or more extruded materials that may persist in a downhole atmosphere of a hydrocarbon properly over an extended time period than nylon or polyethylene terephthalate string, which may help to maintain lead (Pb) layer protection. As used herein, the terms "connect", "connection", "connected", "in connection with", and "connecting" are used to imply "in direct connection with" or "in connection with via one or more elements"; and the time period "set" is used to imply "one element" or "more than one element". As used herein, the terms "up" and "down"; "upper" and "lower"; "top" and "bottom"; and other like terms indicating relative positions to a given point or element are utilized to more clearly describe some parts. This abstract is provided to introduce a choice of concepts which might be further described under in the detailed description.
The next description includes the very best mode presently contemplated for practising the described implementations. Features and advantages of the described implementations can be more readily understood by reference to the next description taken in conjunction with the accompanying drawings. This description is not to be taken in a limiting sense, however somewhat is made merely for the aim of describing the general ideas of the implementations. For instance, a motor housing may embrace slot liners. The SPEEDSTAR™ MVD management circuitry can optionally interface with the UNICONN™ motor controller, which may provide some of the foregoing functionality. As an example, a spherical type factor cable could also be used in an software the place there is sufficient room in a bore. As an example, an ESP cable (e.g., ESP power cable) could also be rated at, for example, about 3 kV, about 4 kV, or about 5 kV (e.g., or extra) and should have a form issue that's flat or spherical. Such environments could even be chemically harsh, for example, consider environments which will embody chemicals resembling hydrogen sulfide, carbon dioxide, etc. Such environments can embody a number of varieties of fluids where, for instance, tools may be no less than partially submersed in the a number of types of fluids.
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