天然气站场埋地管道检测评价技术优化

作为管道输气系统的重要环节——天然气站场,在保障管道系统安全平稳地集输天然气运行过程中,发挥着至关重要的作用。腐蚀问题极易造成气田生产过程中集输管道的腐蚀穿孔、断裂,严重影响气田的正常生产,同时造成环境污染和威胁人身安全。站场管道输送介质比较恶劣及投产时间较长,且埋地管道的监测和检测一直是难点。为判断其是否存在安全隐患,降低运行风险,需对站场埋地管道检测技术进行优化,提出系统的检测评价流程,采取针对性的检测技术以及明确检测部位,同时选择所发现缺陷的评价标准,从而控制油气站场的风险水平,使其在合理的、可接受的范围内。

Optimization of detection and evaluation technology for buried pipeline in natural gas station

Natural gas station, known as an important part of the gas transmission pipeline system, is vital for safe and steady operation of the natural gas gathering pipeline system. However, corrosion would lead to the perforation and breakage of the pipeline, which thus seriously affects the normal production of the gas field, contaminates the environment, and threats the personnel security. Since the pipeline of the gas station always carried unfavorable medium and has been put in operation for a long time, the monitoring and testing of the buried pipeline was considered as technical difficulties. In order to identify the potential safety hazard and reduce the risks, it is needed to optimize the buried pipeline detection technology. In details, it is necessary to put forward the systematic detection procedure, adopt the targeted detection technology and determine the test site, as well as select the evaluation criteria of the defects, so as to control the risk level of the oil and gas station within the reasonable and acceptable range.