西南石油大学学报(自然科学版) ›› 1999, Vol. 21 ›› Issue (4): 75-77.DOI: 10.3863/j.issn.1000-2634.1999.04.021

• 钻采工艺与设备 • 上一篇    下一篇

套管的失效分析

刘清友 陈浩
  

  1. 西南石油学院机械系,四川南充637001
  • 收稿日期:1999-05-30 修回日期:1900-01-01 出版日期:1999-11-20 发布日期:1999-11-20
  • 通讯作者: 刘清友

FAILURE ANALYSIS FOR THE CASING

LIU Qing-you CHEN Hao 
  

  1. Southwest Petroleum inst
  • Received:1999-05-30 Revised:1900-01-01 Online:1999-11-20 Published:1999-11-20
  • Contact: LIU Qingyou

摘要: 通过收集石油套管现场失效数据资料,以套管失效为顶事件建立了石油套管的故障树,该故障树共考虑了47个不同的基本事件。通过对套管故障树的分析,得到了套管失效故障树的一阶最小割集27个,二阶最小割集29个,四阶最小割集1个,确立了套管的主要失效形式为潜在损坏、套管挤毁、套管断裂及严重腐蚀,并提出了提高套管可靠性的措施。
   

关键词: 套管, 可靠性, 故障树, 基本事件

Abstract: According to the data casing failure from oilfield, and casing failure as top event, the fault tree of the casing was established in the paper, the model included 47 different essential events. By analyzing the fault tree of casing, 27 one-order minimum cut sets, 29 two-order minimum cut sets and 1 four
-order minimum cut sets of the fault tree were obtained. The casing failure is collapse, fracture and serious corrosion, finally the paper presents some measures of improving reliability of the casing.

Key words: casing, reliability, fault tree, essential event

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