俄罗斯第三代电磁探伤仪的应用与推广

Application and popularization of Russia third generation electromagnetic defect detector

在油水井生产过程中,由于周围环境的影响,套管发生变形、损坏和腐蚀,直接影响油田的正常生产。多层管柱电磁探伤测井技术利用电磁感应原理实现对井下多层管柱的腐蚀、变形、裂缝及壁厚进行检测。介绍俄罗斯最新产的电磁探伤测井仪MID-K的原理方法、仪器结构及特点,并用测井资料展示其在单套管和多层管内进行套管检查中良好的应用效果。

In production process of the oil and gas or water well,the case-pipes have often been transfigured,dam- aged and corroded due to infection of the ambient condi- tions,thus,influencing the oilfield yields.It is quite nec- essary to find out the reasons of harming case-pipe,pre- vent the area of harmed case pipe from extending,confirm the project for maintaining the case-pipes and prolong the well's life time by improving the scathed case-pipes inspections.The multilayer case-pipes electromagnetic defect detector logging technique uses electromagnetic in- fluence theory to detect the corrosion,transfiguration, fissure and thickness of the case-pipes in the well.In terms of the electromagnetic defect detection log grog ap- paratus from Russia,this paper introduces the multilayer case-pipes electromagnetic defect detecting principle,ap- paratus structure and traits.Logging data from the single case-pipes or multilayer pipes logging revealed this tech- nique's advantages.