关键词: 海管修复, 水下开孔, 水下封堵

Abstract: Subsea pipeline is the important facility of offshore field. Shutdown and huge lost should come with the damage which happen to the pipeline. The key points， which should be to consider before a subsea pipeline repair work， are operation difficulty， risk， time and schedule. This paper do the study of subsea pipeline repair solutions for the gas field subsea pipeline basing side lifting repair technology and hot-tapping plugging repair technology. The better solution will be confirmed by the analysis and comparison between different solutions.

Key words: subsea pipeline repair, subsea hot tapping, subsea pipeline plugging