水下管汇可靠性分析及改进措施  

Reliability Analysis of Subsea Manifold System and Improvement Measures

作　　者：许文虎 郭宏 洪毅 郑利军 

机构地区：[1]中海油研究总院,北京1000281

出　　处：《石油矿场机械》2016年第3期1-6,共6页Oil Field Equipment

基　　金："十二五"国家科技重大专项"水下生产技术"(2011ZX05026-003)

摘　　要：以中国南海某深水气田水下生产系统中东区管汇设计方案为研究目标,使用失效模式、影响和严重度分析方法(FMECA)对水下管汇进行可靠性定性、定量分析,找出系统的薄弱环节。系统的关键单元为生产隔离阀、管线和连接器,其中生产隔离阀失效的危害程度最大,其失效严重度占水下管汇所有失效模式严重度的84.68%;在生产隔离阀的7种失效模式中,危害最大的失效模式为泄漏,占水下管汇所有失效模式严重度的55.13%;造成生产隔离阀泄漏的主要原因是腐蚀、裂缝和材料失效。根据水下管汇可靠性分析结果,提出了改进意见及注意事项,为提高水下管汇系统可靠性提供参考。Failure modes,effects and criticality analysis（FMECA）are applied to analyze the reliability of the eastern manifold of the subsea production system of a deepwater gas field in South China Sea.According to the results of qualitative and quantitative analysis,the key components of the manifold system are process isolation valves,piping and connectors.The criticality of the failure effects of the process isolation valves is the highest level,whose severity number is 84.68 percent of the whole severity number of the manifold system.Among the seven failure modes of the process isolation valves,the leakage is the worst,whose severity number is 55.13 percent of the manifold system.The main causes of the valves＇ leakage are corrosion,crack and material failure.The measures can be put forward to improve the subsea manifold system＇s reliability based on the analysis results.

关 键 词：水下 管汇 可靠性 分析 措施 

分 类 号：TE952[石油与天然气工程—石油机械设备]