智能井系统井喷失控风险事故树分析  

FAULT TREE ANALYSIS ON BLOWOUT RISK OF SMART WELL SYSTEM

作　　者：刘录翔 高永海 蒋宏伟 陈野 赵欣欣 王迪[1,2] 宋武强 LIU Luxiang;JIANG Hongwei;CHEN Ye;ZHAO Xinxin;WANG Di;GAO Yonghai(Key Laboratory of Unconventional Oil&Gas Development,Ministry of Education,China University of Petroleum(East China),Qingdao,Shandong 266580,China;School of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,China;China National Petroleum Corporation Drilling Research Institute,Beijing 102206,China)

机构地区：[1]常规油气开发教育部重点实验室 [2]中国石油大学石油工程学院•华东 [3]中国石油集团工程技术研究院有限公司 [4]中石油渤海钻探工程有限公司定向井技术服务分公司

出　　处：《钻采工艺》2020年第3期13-16,I0001,I0002,共6页Drilling & Production Technology

基　　金：国家科技重大专项“钻井工程一体化软件”(编号:2016ZX05020-006)。

摘　　要：智能井系统是完井领域的一门新兴技术。由于其自身结构以及所应用的复杂储层环境等因素,智能井系统在现场安全,尤其是井喷失控方面风险较大。采用事故树法,以智能井井喷失控为顶事件,结合地质、装备、设计及人工操作等基本事件,建立智能井井喷失控评价模型,通过最小径集和结构重要度,分析关键风险因素,并根据智能井本身的特点赋予各事件不同的概率值,最终提出相应的控制方法。结果表明,智能井系统井喷失控的风险比常规钻井风险更高,在应用时要额外注意监测与控制信号双向传递的通畅性,以便更好的控制井喷风险,降低生产损失。Smart well system is a new technology proposed in the completion direction.Due to the complex well structure and applied strata environments,the intelligent well system may have greater risks in the field,in which blowout out of control is a big problem.Adopting fault tree method with the top event of smart well blowout out of control combination with the events of geology,equipment,design and artificial operation,etc,a risk evaluation model has been established in this research.The major risk factors are analyzed through the minimal path set and structure importance.Each event is given different values according to the characteristics of smart well system.Then the related control methods have been proposed.The results indicate that the blowout out of control probability of smart well system is much larger than that of traditional drilling.When using the smart well technology,the two-way transmission of monitoring and control signals should be guaranteed all the time,so as to better control the blowout risk and reduce production losses.

关 键 词：智能井 井喷控制 风险分析 事故树 

分 类 号：TE257[石油与天然气工程—油气井工程]