普光气田分布式光纤泄漏监测系统应用研究

Application Research of Distributed Optical Fiber Leakage Monitoring System in Puguang Gas Field

随着普光气田天然气供应量和集输管网建设数量的不断增长,输气管线长周期安全运行成为首要问题。为进一步增强普光气田监测和防护系统的安全性,首先对常用的管线泄漏检测方法及不同的光纤泄漏监测方法进行了分析比较,提出了适用于普光气田的分布式声音监测的DAS系统;其次对普光气田光纤泄漏监测方案进行了布置,拟采用5套分布式光纤声波监测系统对其进行泄漏、人工挖掘、机械作业等典型事件的实时在线监测;最后给出了光纤声波监测系统实现的主要功能和指标。该方案的实施能够实现受保区域的安全防护与预警,有效提升普光气田的集输系统监测预警能力。

With the continuous increase of natural gas supply and the construction quantity of gathering and transportation network in Puguang gasfield,the long-term safe operation of gas transportation pipeline is becoming the primary issue.To further enhance the safety of monitoring and protection system of Puguang gas field,the commonly used pipeline leakage detection methods and different optical fiber leakage monitoring methods are analyzed and compared.A distributed sound monitoring DAS system suitable for Puguang gas field is presented.Secondly,the optical fiber leakage monitoring scheme of Puguang gas field is arranged.5sets of distributed optical fiber acoustic wave monitoring systems are going to be adopted to carry out realtime online monitoring for typical events,such as leakage,manual excavation and mechanical operation.Finally,the main functions and indexes of the optical fiber acoustic wave monitoring system realization are given.The implementation of the scheme can realize the safe protection and pre-alarm of the protected area.The monitoring and pre-alarming capacity of the gathering and transportation system of Puguang gas-oil field will be improved effectively.