油气长输管道伴行光缆状态监测及断点精确定位技术综述

油气长输管道点多、线长,周边环境复杂,伴行光缆成为为数不多的能长距离实时监测管道外界入侵状况和信号传输的途径.但是,光缆部署时间长、地质变形等导致光纤断芯时有发生,严重影响管道安全生产,而现有光纤断点监测及精确定位技术尚不能满足生产要求.通过大量文献分析了光纤状态监测原理,总结了光纤振动监测及断点精确定位方法,指出了油...

Condition monitoring and breakpoint precise positioning technology of optical fiber accompanying long-distance oil and gas pipeline: an overview

The long-distance oil and gas pipeline has many points,long lines and complex surrounding environment,so the accompanying optical cable has become the only way to monitor the external intrusion and signal transmission of the pipeline in real time.But,long time of deploying optical fiber and geological deformation lead to fiber core breaking,which seriously affects the safety of pipeline production.However,the existing optical fiber breakpoint monitoring and precise positioning technology cannot meet the production requirements.This paper analyzes the principle of optical fiber condition monitoring based on a large number of literatures,summarizes the methods of optical fiber vibration monitoring and precise positioning of breakpoint,and points out the development direction of optical fiber condition monitoring and precise positioning of breakpoint in the long-distance oil and gas transmission smart pipeline.