套管损伤是国内各油田遇到的普遍问题,准确地掌握套管的损伤情况并及时修复,是延长油气井寿命,保障正常生产的重要手段。结合电磁探伤仪的研制,给出了仪器的总体电路结构,利用LabVIEW图形化编程语言开发了测井信号采集软件。上位机通过串口与下位机进行实时通信,完成测井数据的显示、格式转化和缺陷的识别。标定 Casing damage is a common problem encountered in all oil fields in China. Accurately grasping the damage of the casing and repairing it in time is an important means to prolong the life of the well and ensure the normal production. Combined with the development of electromagnetic flaw detector, the overall circuit structure of the instrument is given, and the logging signal acquisition software has been developed using LabVIEW graphical programming language. PC through the serial port and the next crew for real-time communication, the completion of the logging data display, format conversion and defect identification. Calibration