海底管道水下湿式维修法在工程中的应用

Underwater Wet Maintenance of Submarine Pipeline and Its Engineering Application

海底管道的安全可靠运行是海上油气田生产的根本保障。近年,由于海水冲刷悬空、海上拖网捕鱼作业等,在我国近海相继出现了几次海底管道泄漏事件。2002年10月初,南海西部涠洲12-1至11-4油田海底管道发生的一次泄漏,造成了该油田停产和巨大的经济损失;该文通过该工程所采用的水下维修实例,介绍了一种典型的海底管道水下机械连接维修方法及其实施中的难点和关键点,以期对类似工程具有指导作用。

The safety and reliability of Submarine Pipeline is the fundamental guarantee of the offshore oil production. In recent years, due to suspended burials, sea trawl fisheries work and so on, in our country several times of offshore the pipeline leak have been appeared. In early October 2002, at the South Sea west WZ 12-1 to WZ 11-4 oil field, leak of the pipeline happened, which results in sealing oil field production and huge economic losses. In this paper, with the underwater maintenance in this project taken as an example, a kind of typical pipeline maintenance methods and underwater mechanical connection as well as the difficulties and key points in implementation are introduced. That will be expected play an important role in guiding similar engineering.