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普光气田是国内迄今为止规模最大、含硫及二氧化碳最高的特大型海相气田,管道内部受到冲刷和腐蚀等会造成壁厚减薄;管道外壁则会因绝缘层的缺陷、阴极保护不能达到要求等因素造成化学腐蚀、电化学腐蚀,管道运行风险增加。因此,全面了解和掌握管道现状,将管道风险降到最低是至关重要的。管道智能检测主要是利用几何变形及金属腐蚀检测器对管道进行基线检测,掌握管道的基础数据,为制定酸气管道的维修计划及防腐依据。文章主要介绍了目前天然气管道的智能检测技术以及在普光气田的应用情况。
The Puguang Gas Field is the largest ultra-large marine gas field in China so far with the largest sulfur content and the highest carbon dioxide. The inner wall of the Puguang Gas Field is subject to erosion and erosion which will result in thinning of the wall thickness. The outer wall of the pipeline will be unable to meet the requirements due to the defects of the insulation layer And other factors cause chemical corrosion, electrochemical corrosion, increased risk of pipeline operation. Therefore, it is of vital importance to fully understand and grasp the status quo of the pipeline and to minimize the risk of the pipeline. Pipeline intelligent detection is the use of geometric deformation and metal corrosion detector baseline detection of the pipeline, to grasp the basic data of the pipeline, in order to develop sour gas pipeline maintenance plans and corrosion protection basis. The paper mainly introduces the current intelligent detection technology of natural gas pipeline and its application in Puguang Gas Field.