A high transmission load detection cable

Abstract

The invention discloses a high transmission load bearing detection cable. The high transmission load bearing detection cable comprises a plurality of cable conductors, insulation layers, a shielding layer, and armoring layers. The plurality of cable conductors are used for transmitting signals; the insulation layers wrap the cable conductors and perform insulation separation among the cable conductors; the cable conductor is wrapped by the insulation layer to form a cable core; a shielding layer is arranged on the outside of the insulation layers to shield various interferences; the armoring layers are arranged on the outside of the shielding layer and are obtained through armoring of a plurality of steel wires; double-stranded-wire-structure cable cores exist among the plurality of the cable conductors and each double-stranded-wire-structure cable core is obtained through two cable conductors, which improve a cable signal transmission speed. The high transmission load bearing detection cable improves a twisting mode of a cable core and the two cable cores in the middle adopt a double-stranded-wire mode, which effectively inhibits common mode interference; the double-stranded-wire communication mode is beneficial for transmission modes of a Manchester code, DSL, OFDM, etc; even under a strong interference environment, the double stranded wire can transmit quality images and signals; the double-stranded-wire cable can realize duplex communication, replaces a traditional simplex communication mode and increases the transmission speed of the cable from 200kbs to 5Mbps.

Description

technical field [0001] The invention relates to the field of cables, in particular to a detection cable with high transmission load. Background technique [0002] Petroleum is becoming more and more important as a strategic resource. In the process of oil exploitation, it is necessary to collect various indicators and parameters downhole through various logging instruments, and transmit them to the analysis and control unit on the ground through logging cables, and adopt processing measures according to different situations. , to control the downhole instrument, the commonly used cable length is generally 4000-7000 meters, the signal attenuation is very large, and the speed is difficult to increase. At present, the downhole instrument is developing rapidly, which makes the speed of cable transmission become the bottleneck of efficiency. Therefore, high-speed and reliable transmission of data through long cables is a very important research direction. At present, long-distan...

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Problems solved by technology

[0005] 1. During the induction logging process, the eddy current induced by the transmitting coil in the rock formation interacts with each other, which greatly weakens the conductivity signal recorded by the logging tool;

[0006] 2. During the logging process, the crosstalk phenomenon is serious, and the data is seriously lost after being transmitted to the ground through telemetry short-circuit, so the reference value is not significant;

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