ARMORED SUBMERSIBLE Power CABLE > 자유게시판

As to the cable armor 480 and 490, metal or metallic alloy could also be employed, optionally in multiple layers for improved injury resistance. Power cables and MLEs that may resist damaging forces, whether or not mechanical, electrical or chemical, may help guarantee proper operation of a motor, circuitry, sensors, and so on. Noting that a defective energy cable (or MLE) can doubtlessly harm a motor, circuitry, sensors, and so on. Further, as mentioned, an ESP could also be situated several kilometers into a wellbore. Further, armor indentations on the lead (Pb) had been seen, including indentations with sharp edges; noting that such sharp edges can promote crevice corrosion. The circuitry block 350 may or will not be capable of deriving energy from an unbalanced WYE level and, further, might or is probably not capable of information transmission through an unbalanced WYE level. As proven, the MLEs 500 connect to a motor block 315, which could also be a motor (or motors) of a pump (e.g., an ESP, and so forth.) and be controllable by way of the VSD/step-up transformer block 370. In the example of FIG. 3, the conductors of the MLEs 500 electrically join at a WYE level 325. The circuitry block 350 could derive energy by way of the WYE level 325 and may optionally transmit, obtain or transmit and receive knowledge by way of the WYE point 325. As shown, the circuitry block 350 could also be grounded.

As to the cable jacket 470, it could also be spherical or as proven in the example 401, rectangular (e.g., "flat"). In the example of FIG. 4, the power cable four hundred includes three conductor assemblies where every meeting includes a conductor 410, a conductor shield 420, insulation 430, an insulation shield 440, a metallic shield 450, and one or more barrier layers 460. The three conductor assemblies are seated in a cable jacket 470, which is surrounded by a first layer of armor 480 and a second layer of armor 490. As to the cable jacket 470, it may be round or as shown in another example 401, rectangular (e.g., "flat"). FIG. 11 exhibits example graphics as to some amount of compression and extension of an meeting 1001 with no cushion layer in comparison with much less compression and extension of an meeting 705 with a cushion layer 760. As indicated in FIG. 11, one or more dimensions and/or shapes may be utilized to characterize an amount of deformation of an meeting, significantly an quantity of deformation of a lead (Pb) barrier layer of an assembly. As an example, a braid layer will help present protection to a delicate lead jacket throughout an armor wrapping course of.

In such an example, an extruded cushion layer can obtain a desired hoop stress, which may also help the extruded cushion layer to retain its form. For example, a die could present for extruding material in a substantially tubular shape a few lead (Pb) barrier layer. In such an instance, an elective armor layer may be of a thickness of about 0.5 mm. For instance, a cable can include a conductor with a conductor shield that has a radial thickness of approximately 0.010 inch (e.g., approximately 0.254 mm). For instance, the conductor shield 420 could also be offered as an extruded polymer that penetrates into spaces between strands of the stranded conductor 410. As to extrusion of the conductor shield 420, it might optionally be co-extruded or tandem extruded with the insulation 430 (e.g., which could also be or embrace EPDM). For example, a conductor (e.g., strong or stranded) may be surrounded by a semiconductive material layer that acts as a conductor shield the place, for example, the layer has a thickness higher than approximately 0.005 inch (e.g., approximately 0.127 mm). In some embodiments, a metallic shield layer could serve to electrically isolate the phases of the cable from one another.

For example, every conductor meeting part might embrace strong metallic tubing, such that splitting out the phases is more easily achieved (e.g., to terminate at a connector, to offer improved cooling, and many others.). For example, a multiphase energy cable can embrace coloration coded cushion layers the place a special coloration can code each part of the multiphase energy cable. In the instance of FIG. 5, the MLE 500 (or "lead extension") a conductor 510, a conductor shield 520, insulation 530, an insulation shield 540 and/or a metallic shield 550, one or more other barrier layers 560, a braid layer 570 and armor 580. While the instance of FIG. 5 mentions MLE or "lead extension", it could also be applied as a single conductor assembly cable for a number of of a variety of downhole uses. In such an example, the respective lead (Pb) barrier layers of the assemblies (see, e.g., the lead (Pb) barrier layer 1050) turn into distorted accompanied by some lack of symmetry.

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