Oil-proof circular oil-submerged pump cable

Abstract

The invention discloses an oil-proof circular oil-submerged pump cable which comprises a cable core formed by three wires, three bending filtering tubes and an annular supporting core. Each wire comprises a conductor located in the middle of each wire, a semiconductive shielding layer, an insulated layer and a single face aluminum plastic composite belt, wherein the semiconductive shielding layer, the insulated layer and the single face aluminum plastic composite belt cover the conductor in sequence, a plastic layer of the single face aluminum plastic composite belt faces inwards, and a metal layer of the single face aluminum plastic composite belt faces outwards. The annular supporting core is made of macromolecular material, the outer periphery of the annular supporting core is sealed, and the inner portion of the annular supporting core is provided with a plurality of fine steel wires. The three wires parallel to each other are longitudinally arranged in the annular supporting core and abut against the inner periphery of the annular supporting core, the three bending filtering tubes are longitudinally arranged between two adjacent wires and abut against the inner peripheries of the two adjacent wires and the annular supporting core, a sheath layer covers the cable core, a lubricating oil layer is arranged between the cable core and the sheath layer, and an armor layer covers the sheath layer. The oil-proof circular oil-submerged pump cable is compact in structure, resistant to high temperature, good in magnetic field balance, and excellent in oil-proof performance.

Description

technical field [0001] The invention relates to the field of cables, in particular to an oil-resistant circular submersible pump cable. Background technique [0002] The submersible pump cable is used as the passage part of the electric submersible pump unit to transmit electric energy, and it has been working in the environment of high temperature, high pressure and corrosive gas for a long time. In order to make the electric pump unit run normally for a long time, the front cable matching the threshold is required to have high electrical performance: high temperature resistance, high pressure resistance and corrosion resistance. Therefore, compared with ordinary power cables, in addition to having the same insulation, the former cables also have the particularity of adapting to the downhole operation of oil wells, mainly in that the structure and insulating materials are different from general power cables. [0003] According to the shape, the submersible pump power cable...

AI Technical Summary

Problems solved by technology

[0004] The oil well environment especially has high requirements on the oil resistance of the cable. The structure of the general circular submersible pump cable is not stable. During power transmission, the electromagnetic induction caused by the imbalance of the magnetic field will cause hysteresis loss, which will cause the cable to heat up and prolong its service life. short

At the same time, when the cable is running underground in the oil well, oil and gas are easy to invade the interior of the cable core, which will affect the life of the cable

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