基于故障相关性的随钻方位电磁波测井仪器可靠性失效建模研究  

Research on reliability failure modeling to azimuthal electromagnetic wave LWD toolbased on fault correlation

作　　者：李辉[1] 陆永钢 刘得军[3] 郝振华 LI Hui;LU YongGang;LIU DeJun;HAO ZhenHua(School of Microelectronics and Control Engineering,Changzhou University,Changzhou Jiangsu 213159,China;Shanghai Shenkai Petroleum&Chemical Equipment Co.,Ltd,Shanghai 201112,China;College of Information Science and Engineering,China University of Petroleum,Beijing 102249,China)

机构地区：[1]常州大学微电子与控制工程学院,江苏常州213159 [2]上海神开石油化工装备股份有限公司,上海201112 [3]中国石油大学(北京)信息科学与工程学院,北京102249

出　　处：《地球物理学报》2025年第2期759-767,共9页Chinese Journal of Geophysics

基　　金：国家自然科学基金项目(41074099);江苏省高等学校自然科学研究项目(17KJB416001);江苏省自然科学基金项目(BK20190159)资助

摘　　要：随钻方位电磁波测井仪器作为石油勘探开发的高端装备,对于实时钻井地质导向、井眼轨迹优化及提高储层钻遇率具有十分重要的意义.但因井下复杂环境应力的影响,导致仪器故障率不断升高同时测井响应出现畸变、极值甚至重合,不仅对实时地质导向造成极大影响并且难以给出合理准确的解释.因此,本文以AziExpress随钻方位电磁波测井仪器为研究实体,通过环境应力可靠性试验对仪器内部天线系统失效模式进行分析.同时对天线系统主要部件的失效时间进行统计并结合历史故障及维修统计数据拟合可靠性失效分布模型,再利用K-S检验法对天线系统各主要部件失效分布模型进行检验.最后依据失效分布模型计算各主要部件的可靠性性能指标,结合失效概率密度函数、失效率、累积失效分布函数对天线系统的可靠性进行分析与评价.研究结果表明,威布尔失效分布模型对于随钻方位电磁波测井仪器天线系统主要部件的最小拟合优度检验值D_(n)为0.131,基于故障相关性的可靠性建模方法能够对仪器天线系统可靠性仿真分析与预测提供依据.As the high-end equipment for oil exploration and development,azimuthal electromagnetic wave logging-while-drilling(LWD)tool has significant importance to real-time geo-steering drilling,optimization of the borehole trajectory,and improving the reservoir drilling rate.But due to the influence of underground complex environmental stress,it may lead to a high failure rate of the tool.Meanwhile,it may cause the logging response curves appear distortion,extreme values,and overlap.These extreme logging responses not only serious impact to real-time drilling geo-steering,but also hard to provide the reasonable explanation.Therefore,in this paper the AziExpress tool has been used as the research entity.And by using environmental stress reliability test to analyse the failure mode and failure mechanism of the antenna system.Meanwhile,the failure time of the antenna system′s main components have been counted.And then combine the historical fault data and maintenance statistical data the reliability failure distribution model can be fitted.Kolmogorov-Smirnov(K-S)testing method is used to verify the correctness of the reliability failure distribution model.The last according to the reliability failure distribution model we can compute reliability performance indicators of these main components.And then combine the failure probability density function,failure efficiency,and cumulative failure distribution function the antenna system’s reliability can be analyzed and evaluated.Research results shown that the Weibull failure distribution model is effective to reliability modeling to the antenna system of the tool,and the minimum goodness of fit test value D_(n) for main components of the antenna system is equal to 0.131.The reliability modeling method based on fault correlation can provide the theoretical basis for reliability simulation analysis and reliability prediction of the antenna system of the tool.

关 键 词：随钻方位电磁波测井仪器 可靠性试验 失效分布模型 可靠性指标 故障相关性 

分 类 号：P631[天文地球—地质矿产勘探]