渤海超期服役海底管道路由调查及悬跨状态评估

Route Survey and Free Span Assessment for the Extended Service Subsea Pipelines in Bohai Bay

海底管道是海洋油气田的生命线,然而随着服役时间的累积,越来越多的管道达到设计使用寿命,出现超期服役隐患。采用工程物探调查设备调查了超期服役海底管道的悬跨、裸露及埋藏状况。采用海底管道评估软件系统,对海底管道临界悬跨长度、悬跨段疲劳寿命进行了评估,以期掌握管道的服役状态,并为管道维护决策提供支持,从而规避运行风险,提高管道运营的安全性。

Subsea pipeline is the lifeline of the offshore oil & gas field .More and more pipelines have reached their designed life with the increase of the service time .Geophysical equipment acquired the date of the free span ,exposure and buried condition for the subsea pipelines .The subsea pipeline assessment system assessment the critical length and fatigue life of free span .By knowing of the condition of those lines in service ,the operation risk was decreased and the safety of the subsea pipelines was increased .The support of maintenance for the owner of the subsea pipelines was also offered .