海管膨胀弯卡具维修关键技术及工程应用

Key Technology and Engineering Application of Maintenance with Clamping Apparatus for Subsea Expansion

海底管道安全运行是海上油气田正常生产的根本保证。膨胀弯作为海底管道的重要组成部分,起着避免管道由于热胀冷缩作用而产生应力损坏的作用。随着膨胀弯服役年限的增加,膨胀弯内常存在不同程度的腐蚀,部分甚至已经影响管道正常运行。膨胀弯的海上维修工作占总海管维修量的比重正在逐年增加。通过工程实践,介绍了一种简单高效的膨胀弯卡具维修技术。

The safe operation of submarine pipelines was the fundamental guarantee for the normal production of offshore oil and gas fields. As an important part of the submarine pipeline, the expansion played a role in avoiding pipeline damage caused by thermal expansion and contraction. With the increase of the service life of the expansion, there were often different degrees of corrosion in the expansion, and some had even affected the normal operation of the pipeline. The proportion of offshore maintenance work in the expansion of the total seabed pipeline was increasing year by year. Through engineering practice, a simple and efficient expansion clamping apparatus repair technology was introduced.