基于事故树的钻柱失效分析方法

doi:10.7623/syxb201101030

石油学报 ›› 2011, Vol. 32 ›› Issue (1): 171-176.DOI: 10.7623/syxb201101030

基于事故树的钻柱失效分析方法

臧艳彬王瑞和张锐王子振

中国石油大学石油工程学院山东青岛 266555

收稿日期:2010-05-03 修回日期:2010-08-25 出版日期:2011-01-25 发布日期:2011-03-23
通讯作者: 臧艳彬
作者简介:臧艳彬，男，1984年1月生，2006年毕业于中国石油大学(华东)，现为中国石油大学（华东）在读博士研究生，主要从事油气井钻井地质评价、井身结构优化设计等方面的研究工作。
基金资助:
国家自然科学基金项目(No.50974130)和中央高校基本科研业务费专项资金（09CX04006A）联合资助。

A failure analysis of drill string based on fault tree

ZANG Yanbin WANG Ruihe ZHANG Rui WANG Zizhen

Received:2010-05-03 Revised:2010-08-25 Online:2011-01-25 Published:2011-03-23

摘要/Abstract

关键词: 钻柱, 失效分析, 事故树分析, 预防措施, 应用实例

Abstract:

In view of frequent occurrences of drill-string failure under complicated geological conditions and the less effectiveness of preventive measures,the present paper applied the fault tree analysis (FTA) of the graph theory to interpret the logical relationship of an inducement of drill-string failure and related control measures,established a fault tree model for drill-string failure,and analyzed paths of drill-string failure and the optimal prevention ways by using the least cut-set and the least path-set.The drill-string failure analysis in the northeastern Sichuan exploration area was taken as a case study.The results indicated that the probability of drill-string failure in the study area obtained by quantitative analysis of fault tree was 56.81%,consistent with the actual statistics.The case study proved that the drill-string failure analysis based on FTA was feasible,the structure of the fault tree involved was reasonable and the calculation results were truthful and reliable.Meanwhile,the calculation of importance magnitude by fault tree for basic events provided the drill-string failure prevention and control with a theoretical basis,which enhanced the pertinence and practicality of prevention and control measures.

Key words: drill string, failure analysis, fault tree analysis, preventive measures, application example

臧艳彬王瑞和张锐王子振. 基于事故树的钻柱失效分析方法[J]. 石油学报, 2011, 32(1): 171-176.

ZANG Yanbin WANG Ruihe ZHANG Rui WANG Zizhen. A failure analysis of drill string based on fault tree[J]. Editorial office of ACTA PETROLEI SINICA, 2011, 32(1): 171-176.

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基于事故树的钻柱失效分析方法

A failure analysis of drill string based on fault tree

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