中文摘要：

研究了井中三分量磁测数据转换和绘图的方法，针对轴向系统磁力仪，推导了斜井的三分量磁测原始数据转换公式；基于面向对象的程序设计思想，采用VB2005开发了一套井中三分量磁测数据转换及绘图软件；利用实际资料对软件进行了综合测试，结果表明，该软件能够快速有效地进行井中三分量磁测数据转换，并根据解释上的需要精确地绘制△Z曲线图、△H矢量图等磁异常图，完成了井中三分量磁测数据的计算机自动转换及绘图的功能，具有一定的应用前景。

英文摘要：

In this paper, the methods of data processing and drawing for borehole three-component magnetic measurement are discussed. The data processing formulae of tilted well for the axial system magnetometer were inferred. Based on Object-Oriented Programming （OOP） and using VB2005 as the program language, the authors successfully designed and implemented a data processing and drawing system for borehole three-component magnetic measurement. In order to test the system, this paper has described an example of borehole three-component magnetic measurement, which proves that the system can effectively process the data and accurately draw such graphs as graph and vectorgraph. As a data processing and drawing system for borehole three-component magnetic measurement, this system is perfect and has a wide application vista.