海底管道损伤悬跨段磁记忆检测研究

海底管道是保障海上油气田持续开发的重要运输手段,海底管道在生产运行过程中容易受到腐蚀及外力作用产生缺陷而导致失效,因此定期对海底管道进行内检测是保障管道安全运行的必然需求.鉴于此,对试验管道损伤部位进行了力磁耦合仿真,仿真结果显示在管道的受力部位产生了磁场强度的变化.又以磁记忆检测技术为基础并结合已有的管道漏磁内检测技...

Research on Magnetic Memory Detection of Submarine Pipeline Suspended Damage Section

Submarine pipelines are an important means of transportation to ensure the continuous development of offshore oil and gas fields.Submarine pipelines are susceptible to corrosion and external forces that cause defects and lead to failure during production and operation.Therefore,regular internal inspection of submarine pipelines is an inevitable requirement to ensure the safe operation of pipelines.In view of this,a force-magnetic coupling simulation is performed on the damaged part of the test pipeline.The simulation results showed that the magnetic field intensity changed at the stressed part of the pipeline.Based on magnetic memory detection technology,the submarine pipeline internal detector is developed,and the field test research of magnetic memory of submarine pipeline suspended damage section is carried out.The test results show that the pipeline magnetic field intensity is high at both ends and low in the middle,and the magnetic field signal at the damage point is distorted.The submarine pipeline internal detector developed based on magnetic memory detection technology can effectively detect the damaged section of the suspended submarine pipeline.With the increase of pipeline damage,the detection signal gradient value increases significantly.The research results could provide technical support for the application of magnetic memory detection technology to submarine pipeline damage detection.