基于磁记忆的不同井深钻柱失效风险检测  

Failure Detection of Drill String in Different Well Depths Based on Magnetic Memory

作　　者：杨坤[1] 樊建春[1] 祖强 武新国 辛康[1] 曾浩天 

机构地区：[1]中国石油大学(北京),北京102249 [2]中国石油塔里木公司,库尔勒841000

出　　处：《无损检测》2018年第2期6-11,28,共7页Nondestructive Testing

基　　金：钻柱疲劳损伤一体化监控技术推广应用(201013100220)

摘　　要：在井口处、中性点和井底附近极易发生钻具螺纹和管体断裂的事故,严重影响着油气资源的勘探开发进程。为解决此问题,将金属磁记忆检测技术应用于起钻过程中井口钻柱疲劳损伤状态的监测,并对塔里木油田ZG301井钻柱进行检测,着重研究钻柱接头处啮合螺纹磁记忆信号分析方法,建立井口钻柱接头处螺纹和管体的磁记忆信号随井深的变化关系,并对应力集中程度较严重的典型钻柱进行分析。结果表明,金属磁记忆检测技术能够早期检测钻柱的应力集中状况,能够避免钻井过程中带伤钻具的入井,对预防钻具疲劳断裂事故的发生具有重要意义。Accidents of drilling thread and pipe fracture are easy to occur near the wellhead,the neutral point and the bottom hole,the exploration and development process of oil and gas resources was therefore seriously affected.To solve this problem,this article applied metal magnetic memory detection technology to monitor the drill string damage state during the drilling process,and the technology was put into practice in ZG301 H well of Tarim Oilfield to conduct damage detection test.The analysis method of the magnetic memory signal in the thread joint of drill string is studied,the relationship between the magnetic memory signal of the thread and tube body with the well depth is established,and the typical drill string with larger stress concentration is analyzed.It can avoid injured drilling tools being brought into the well,and it is of great significance for preventing the occurrence of fatigue fracture.

关 键 词：不同井深 井口钻柱 应力集中 

分 类 号：TG115.28[金属学及工艺—物理冶金]