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Method for performing optical fiber laying in pipeline through liquid working medium

A liquid and optical fiber technology, applied in optical fiber/cable installation, optics, light guide, etc., can solve the problems of increasing safety hazards and not recommended to use, and achieve the effect of increasing fiber cabling distance, improving reliability, and improving reliability.

Inactive Publication Date: 2017-08-18
中清盈创(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in the field of oil fields, due to the high temperature and high pressure environment in the well, the application of gas laying will increase safety hazards, and it is not recommended to use

Method used

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  • Method for performing optical fiber laying in pipeline through liquid working medium
  • Method for performing optical fiber laying in pipeline through liquid working medium
  • Method for performing optical fiber laying in pipeline through liquid working medium

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, the present embodiment proposes a method for laying new optical fibers, which is applicable to optical cable processing, and it includes the following steps:

[0038] 1) Connect the tee 4 at the inlet of the laying target pipeline 2, connect one of the inlets of the tee 4 to the liquid drive and recovery system 1, connect the other inlet to the optical fiber supply system 3, and connect the outlet to the laying target pipeline 2.

[0039] 2) First turn on the liquid drive and recovery system 1, pump the liquid working medium into the laying target pipeline 2, then turn on the optical fiber supply system 3 to slowly send the new optical fiber into the tee 4, and use the dragging force of the liquid working medium to The new optical fiber is brought into the laying target pipeline 2.

[0040] 3) When the new optical fiber reaches the length to be laid, close the liquid drive and recovery system 1 and the optical fiber supply system 3 to complet...

Embodiment 2

[0042] Such as figure 2 As shown, this embodiment proposes another method for laying new optical fibers, which is suitable for laying downhole optical fibers without considering the replacement of optical fibers, and includes the following steps:

[0043] 1) There is an auxiliary pipeline 5 in the oil well to form a U-shaped structure with the laying target pipeline 2, and a U-shaped joint 6 is arranged at the U-shaped end of the two pipelines (generally the bottom end of the well for an oil field) (such as image 3 shown), to construct a liquid communication channel between the two pipelines.

[0044] 2) Connect the tee 4 at the entrance of the laying target pipeline 2, connect one of the inlets of the tee 4 to the liquid drive and recovery system 1, connect the other inlet to the optical fiber supply system 3, and connect the outlet to the laying target pipeline 2; connect the auxiliary pipeline The outlet is connected to the liquid drive and recovery system 1.

[0045] 3...

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Abstract

The invention relates to a method for performing optical fiber laying in a pipeline through a liquid working medium. The method is characterized in that the friction force between the liquid working medium and optical fibers is used as dragging force to bring the optical fibers into the target laying pipeline. When the method is applied to optical cable processing, the stainless steel pipe is formed firstly and then the optical fibers enter the pipe so that the risk of scrapping of the whole section of optical cable caused by heat damage of the internally filled optical fibers in welding the stainless steel band by using the conventional optical cable processing technology can be effectively avoided, the cabling reliability of the optical fibers can be enhanced, the cabling distance of the optical fibers can be effectively enhanced, the cabling speed of the optical fiber cable is fast and the cabling process is simple and reliable. Underground optical fiber laying can be successfully completed or the damaged optical fibers in the original pipe column can be replaced without using the downward entering optical cable pipe column so that the work risk and cost can be greatly reduced, and the reliability of optical fiber sensing in oil field application can be substantially enhanced. The method can be widely applied to the technical field of petroleum engineering, photoelectric sensing, optical fiber testing and signal transmission.

Description

technical field [0001] The invention relates to a method for laying an optical fiber, in particular to a method for laying an optical fiber (with a diameter of 125 μm-255 μm) in a pipeline using liquid working fluid. Background technique [0002] At present, optical fiber sensing in oil fields is widely used in oil field exploitation, oil gas or power pipeline transportation monitoring due to its distributed, high temperature resistance, and anti-electromagnetic interference characteristics, which demonstrates a wide range of application fields of optical fiber sensing technology. [0003] The traditional optical fiber laying method uses gas such as air or nitrogen as the medium for pumping the optical fiber, and has been widely used in the field of telecommunications. However, the minimum diameter of the optical fiber or optical cable laid by gas is about 1mm, no matter how small it is, it will not be able to drive the optical fiber or optical cable into it due to the obvio...

Claims

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Application Information

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IPC IPC(8): G02B6/50
CPCG02B6/502
Inventor 王德民王超英
Owner 中清盈创(北京)科技有限公司
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