ARMORED SUBMERSIBLE Power CABLE > 자유게시판

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For instance, the cushion layer 760 may be formed as a tube defined no less than partly by a wall thickness and an internal cross-part dimension (e.g., an interior diameter) and/or an outer cross-section dimension (e.g., an outer diameter). For example, in embodiments that embody an HNBR insulation shield layer extruded over an EPDM insulation layer, the insulation shield layer may impart enhanced damage resistance in addition to improved resistance to properly fluids and gases to the cable. As to material of construction, a cable jacket might include one or more layers of EPDM, nitrile, hydrogenated nitrile butadiene rubber (HNBR), fluoropolymer, chloroprene, or different material (e.g., to offer for resistance to a downhole and/or different environment). For example, a number of cushion layers could also be extruded and include a crosslinkable polymeric materials that can crosslink to realize a desired crosslink density. As to the insulation shield 440, it could optionally be a semiconductive material having a resistivity lower than about 5000 ohm-m. As to the conductor shield 420, it may optionally be a semiconductive materials with a resistivity less than about 5000 ohm-m and be adhered to the conductor 410 in a way that acts to scale back voids therebetween (e.g., consider a considerably voidless adhesion interface).

For example, a conductor (e.g., stable or stranded) may be surrounded by a semiconductive material layer that acts as a conductor shield where, for example, the layer has a thickness higher than approximately 0.005 inch (e.g., roughly 0.127 mm). For example, a metallic shield can be a lead (Pb) based mostly shield that is comparatively gas impermeable. Such cushioning might help to preserve the integrity of the metallic shield 750 via one or more mechanisms. In the example of FIG. 23, the a number of conductors 2310 could also be formed from a raw conductor material (e.g., copper) that has been drawn to a normal wire measurement, annealed, and plated in either a stranded or stable configuration. As an example, an inline longitudinal wrapped gas impermeable barrier that includes a lead (Pb) alloy tape for gasoline sealing could also be disposed about particular person insulated copper conductors within a multi-phase conductor meeting. For example, manufacture of an inline longitudinal wrapped gasoline impermeable barrier could include using with a lead (Pb) alloy (e.g., Pb-Sn-Sb crystal structure) tape. For instance, fuel intrusion, fluid intrusion, etc. might degrade material(s), which may possibly lead a ground fault.

In some embodiments, a metallic shield layer may be formed as a conductive materials tape, braid, paint, or extrusion layer. 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, a number of other barrier layers 560, a braid layer 570 and armor 580. While the example of FIG. 5 mentions MLE or "lead extension", it could also be carried out as a single conductor assembly cable for a number of of a wide range of downhole makes use of. FIG. 5 exhibits an example of one of the MLEs 500 suitable to be used in the system 300 of FIG. 3 or optionally a number of other systems (e.g., SAGD, etc.). The crosslinking fee in this case will be managed by ambient humidity and temperature with a time to full cure being of the order of a week or more (e.g., consider one to about 5 weeks). However, as demonstrated, such a woven polyester braid could be unstable underneath excessive temperature and strain and can seemingly be almost fully degraded inside the primary few weeks of cable service time. Accordingly, the time and price to replace a defective ESP, energy cable, MLE, and so forth., can be substantial.

Power cables and MLEs that may resist damaging forces, whether or not mechanical, electrical or chemical, may help guarantee correct operation of a motor, circuitry, sensors, and so on. Noting that a faulty energy cable (or MLE) can potentially damage a motor, circuitry, sensors, and many others. Further, as talked about, an ESP may be located a number of kilometers right into a wellbore. FIG. 12 exhibits a collection of pictures for two totally different cables 1200 (left) and seven hundred (right). FIG. Four reveals an instance of the ability cable 400, appropriate for use within the system 300 of FIG. Three or optionally one or more other techniques (e.g., SAGD, low voltage armored power cable and so forth.). FIG. 7 reveals an instance of a energy cable 700, an example of a energy cable 701, and an instance of a power cable 702 the place the power cable 700, 701 and/or 702 may be appropriate to be used in the system 300 of FIG. Three or optionally in a number of other techniques (e.g., SAGD, and so on.). In the instance of FIG. 4, the facility cable 400 consists of three conductor assemblies where each assembly 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 could also be round or as shown in another example 401, rectangular (e.g., "flat").