High-temperature-resistant load-bearing photoelectric hybrid cable and manufacturing technology thereof

Abstract

The invention discloses a high-temperature-resistant load-bearing photoelectric hybrid cable, which comprises an optical fiber, an optical fiber protection tube, a high-temperature-resistant inner sheath, a high-temperature-resistant insulating conductor, a high-temperature-resistant outer sheath, a first armor layer and a second armor layer in turn from inside to outside. The advantages of the hybrid cable are as follows: the hybrid cable not only has the functions of power and signal transmission, but also has the functions of optical fiber communication and optical fiber sensing, and the cable is multifunctional; the hybrid cable can work for a long time in an underground working environment of up to 200 DEG C, and the long-time working reliability and service life of the hybrid cable at high temperature are ensured; the hybrid cable has better capacity to withstand underground atmospheric lateral pressure, the compressive strength is greater than 70MPa, and the hybrid cable can work for a long time in a harsh underground environment with high temperature and high pressure; and the high-temperature-resistant insulating conductor is made of enameled round copper wires, so that the diameter of the insulating conductor is smaller, the flexibility of the structure design of the hybrid cable is improved, and it is ensured that the overall diameter of the cable is not changed after an optical unit is added to the traditional cable.

Description

technical field [0001] The invention relates to the field of cables, in particular to a high-temperature-resistant load-bearing photoelectric hybrid cable and a manufacturing process thereof. Background technique [0002] Load-bearing detection cables are mainly used in logging, perforating and coring operations of various oil and gas wells, as well as hydraulic measurement of oceans and rivers. In addition, in geological exploration, geothermal logging and other occasions, they are also used as downhole sensing equipment, The cables used for power transmission, data transmission and communication connection of measuring instruments need to bear the weight of downhole instruments and equipment and the cables themselves. The parts used to transmit power, data and control signals in the load-bearing detection cables currently used are mainly insulated copper wires, but the use of insulated copper wires for transmission has the defects of large loss, short transmission distance...

AI Technical Summary

Problems solved by technology

The parts used to transmit power, data and control signals in the load-bearing detection cables currently used are mainly insulated copper wires, but the use of insulated copper wires for transmission has the defects of large loss, short transmission distance and poor anti-interference ability

[0003] With the development of optical fiber communication technology and sensing technology, optical fiber will be gradually applied to the data transmission and communication of downhole equipment and the sensing of various signals such as downhole temperature and vibration; +70°C, it is difficult to adapt to the harsh working environment of high temperature and high pressure underground

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