In the light of the status that there are caustic faults in the oil well tubing and there are not effective inspections, in this paper the plane roundness fault model of the is studied, and the magnetic leakage flux distributing model at the direction of the normal of the roundness fault is proposed.
针对油管容易遭到腐蚀性损伤而目前缺乏有效检测手段的现状，本文系统的研究了平面圆形缺陷模型，提出了圆形缺陷的法线分量漏磁场的实验分布模型。
