Abstract: All the facilities of offshore oil production industry are connected by pipelines in offshore oil and gas development project. Pipelines enable the separated segments a whole cordinating organic system. The safety of subsea pipeline is crucial to the whole offshore oil industry. The corrosion of subsea pipeline is unavoidable and the most difficult job is the corrosion protect of the field joint thereof. The anticorrosive coatings commonly used and several new types of coatings are introduced in this paper. The advantages, disadvantages and difficulty of coating process are discussed Meanwhile, the opinion on the development of coating processfor corrosion protection of subsea pipeline was given.

Key words: subsea pipeline, field joint, coating, thermal spray

摘要： 在海洋石油开采工程中，海上生产设施的各个环节通过管道形成相互关联、相互协调作业的生产系统，海底管线安全对整个海洋石油产业都非常重要。 海管的腐蚀是一个不可避免的过程，而其中又以海管节点的腐蚀保护最难以实现。 介绍了常用的海底管线节点防腐涂层和几种新型涂层，分析了各种技术的优缺点和施工的难点，展望了海管节点防腐设计和涂装施工未来的发展方向。

关键词: 海底管线防腐, 节点防腐, 涂层, 热喷涂