| 基于近代天线理论的钻孔电磁波法正常场 |
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| 关键词:borehole electromagnetic wave method normal field generalized transmission line theory |
| 基金项目:国家自然科学基金项目“利用偶极天线探测地层电磁参数的基本理论”（40074029） |
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| The Normal Field in Borehole Electromagnetic Wave Method Based on the Modern Antenna Theory |
| The normal field in borehole electromagnetic wave method is the basis for both the theoretical investigation and the data interpretation. Therefore, it is necessary to establish the theory of the normal field on the basis of the modern antenna theory. Through an analysis of the basic electromagnetic system in borehole electromagnetic method, it is shown that the generalized transmission line theory of the insulated antenna is applicable to both the cross ?hole electromagnetic exploration and electromagnetic wave logging. In comparison with the classical formulations of the normal filed, it is found that the formula based on the generalized transmission line theory considers the influences of the insulate layer of the antenna and that of the boreholes. As a result, the formulas presented here can provide more information on the electromagnetic parameters of the surrounding rocks and the borehole fluid. They should become the theoretical foundation of the cross - hole electromagnetic exploration and the electromagnetic wave logging. |
| SUN Jian-guo.2002.The Normal Field in Borehole Electromagnetic Wave Method Based on the Modern Antenna Theory[J].Acta Geoscientica Sinica,23(6):567-571. |
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