A kind of high-strength composite material optical fiber for long-distance penetrating curved pipes and its preparation method

Abstract

The invention discloses a high-strength composite material optical fiber for penetrating through a curved pipeline in a long distance and a preparation method of the high-strength composite material optical fiber. The high-strength composite material optical fiber comprises a stainless steel pipe optical fiber unit (1), a high-strength fiber composite material (2) which is coated at the periphery of the stainless steel pipe optical fiber unit (1) and a high-break elongation fiber composite material (3) which is coated at the periphery of the high-strength fiber composite material (2), wherein the stainless steel pipe optical fiber unit (1) comprises stainless steel pipes (1-2) and optical fiber bundles (1-1), and the number of the stainless steel pipe optical fiber unit (1) is greater than or equal to 1. The high-strength composite material optical fiber provided by the invention has the advantages of high strength, high modulus, fatigue resistance, corrosion resistance, good toughness and the like; optical fiber data transmission also has the advantages of high sensitivity, large dynamic range, anti-electromagnetic interference, good electric insulation performance, no sparks, high temperature resistance, stable chemical performance and the like and is particularly suitable for being applied to penetrate through the curved pipeline in a long distance.

Description

technical field [0001] The invention relates to an optical fiber, in particular to a high-strength composite material optical fiber capable of passing through long-distance bent pipes and a preparation method thereof. Background technique [0002] With the development of modern economy, the oil resources stored on the earth's land are becoming increasingly exhausted. In order to expand the scope of exploitation, with the support of increasingly powerful technology, human tentacles have already involved the ocean. measurement is very difficult. Due to the invention of the optical fiber distributed temperature monitoring system (DTS) and its gradual promotion and use, real-time monitoring of deep sea oil wells can be realized. However, the optical fiber as a data transmission medium plays an important role, but the optical fiber structure of the prior art, Due to the unreasonable structural design, low strength, and poor seawater corrosion resistance, especially the inability...

AI Technical Summary

Problems solved by technology

Due to the invention of the optical fiber distributed temperature monitoring system (DTS) and its gradual promotion and use, real-time monitoring of deep sea oil wells can be realized. However, the optical fiber as a data transmission medium plays an important role, but the optical fiber structure of the prior art, Due to the unreasonable structural design, low strength, and poor seawater corrosion resistance, especially the inability to wear long-distance bent pipes, it cannot meet the underwater installation and flexible application of the optical fiber distributed temperature monitoring system, which limits its application in complex underwater environments. application

[0003] In addition, for oil production in land vertical wells or side wells, it is necessary to extend the optical fiber to the oil layer during oil production exploration and oil production in land side wells, and the channel has a certain curvature, which requires high strength, high toughness, and optical fibers that can pass through bent pipes for long distances. The optical fiber structure design is not reasonable enough, the bending resistance is poor, and it cannot pass through the curved pipe for a long distance

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