常规钻具缺陷的井口漏磁探伤设备研制

发布时间：2018-06-05 19:11

本文选题：钻具缺陷 + 漏磁　；参考：《东北石油大学》2015年硕士论文

【摘要】：在钻探过程中需要对钻具进行阶段性或临时性现场探伤检测,及早发现钻具缺陷,以避免出现井下钻具事故。但目前采用的检测方式、技术能力不能满足实际需求。常规钻具缺陷的井口漏磁探伤设备是利用起下钻作业的直线运动对钻具进行现场检测,可以减少钻具运回车间检测环节,缩短检测时间,能及时发现缺陷钻具,避免继续下井使用造成事故。本文通过对钻具的失效情况的系统分析,总结归纳了各种钻具的缺陷形式及缺陷产生的原因。调研了国内外钻具缺陷探伤的现状。在此基础上确定了常规钻具缺陷井口漏磁探伤设备的结构。提出了常规钻具缺陷井口探伤检测设备包含以下几个基本组成部分:检测系统、测控系统、行走系统。根据检测设备的工作环境对各个系统的组成部分进行研究,确定了各系统的组成部件。检测系统主要包括探头主体结构以及保证检测精度的钻具起出除泥装置,测控系统主要包括控制电路和微机控制系统。行走系统主要由井口运移导轨、移动底座组成。通过采用ANSYS分析软件,采用有限元仿真设计进行磁路设计和磁场分析,掌握磁性参数对探头检测灵敏度的影响规律,确定探头几何参数范围;采用正交优化实验进行探头结构尺寸优化,掌握结构参数对检测灵敏度的影响规律,确定探头最终结构尺寸。研制的常规钻具缺陷的井口漏磁探伤设备实现了在钻井现场对钻具检测的目的,为及早发现钻具缺陷提供了一种有效的检测技术手段。
[Abstract]:In order to avoid the downhole drilling accidents, it is necessary to carry out stage or temporary on-site flaw detection in drilling to detect the defects of drilling tools as early as possible. However, the current testing methods, technical capabilities can not meet the actual needs. The conventional wellhead magnetic leakage testing equipment for drilling tool defects is to make use of the straight line motion of the down-drilling operation to carry out on-site inspection of the drilling tool, which can reduce the inspection link of the drill tool back to the workshop, shorten the detection time, and find the defective drilling tool in time. Avoid accidents caused by the continued use of the well. Based on the systematic analysis of the failure of drilling tools, this paper summarizes the defect forms of various drilling tools and the causes of the defects. The present situation of drilling tool defect detection at home and abroad was investigated. On the basis of this, the structure of the conventional well head magnetic leakage detection equipment for drilling tool defects is determined. It is proposed that the conventional drilling tool defect detection equipment includes the following basic components: detection system, measurement and control system, and walking system. The components of each system are determined according to the working environment of the testing equipment. The detection system mainly includes the main structure of the probe and the mud removal device of the drill tool to ensure the detection accuracy. The measurement and control system mainly includes the control circuit and the microcomputer control system. The walking system is mainly composed of wellhead moving guide rail and moving base. The magnetic circuit design and magnetic field analysis are carried out by using ANSYS software and finite element simulation design. The influence of magnetic parameters on probe detection sensitivity is grasped and the range of probe geometric parameters is determined. The structure dimension of the probe was optimized by orthogonal optimization experiment. The influence of the structure parameters on the detection sensitivity was grasped and the final structure size of the probe was determined. The developed wellhead magnetic flux leakage flaw detection equipment for conventional drilling tool defects realizes the purpose of detecting drilling tools in the drilling field and provides an effective technical means for early detection of drilling tool defects.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE921.2

【参考文献】