长源距随钻定向电磁波测井仪器频率和源距选择方法

doi:10.19595/j.cnki.1000-6753.tces.180283

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Abstract Deep detection is the development trend of the directional electromagnetic logging while drilling technology. How to take into account the wider formation detection range as well as the deeper detection depth is one of the important problems in the design process of the tools. The sensitivity of the EMF of the receiver is studied based on the dyadic Green's function method. And the frequency and space selection method is proposed. Then the effects of the distance between the tool and the interface and the resistivity contrast on the rotation characteristics of the EMF of the receiver are studied. Finally, the scaled model of the long space directional logging system is built up, and the experiments on the rotation characteristics of the receiving signals with different resistivity contrast are carried out. The correctness of the frequency and space selection method is verified. The method can provide the basis for parameter selection of the coil system and widen the formation resistivity detection range for different formation parameters.

Key words： Directional electromagnetic logging sensitivity scaled model long space

Received: 05 March 2018 Published: 30 October 2018

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TM153

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	Zhang Chao
	Liu Guoqiang
	Xia Zhengwu
	Li Yanhong
	Xing Bowen

Cite this article:

Zhang Chao,Liu Guoqiang,Xia Zhengwu等. Frequency and Space Selection Method for Long Space Directional Electromagnetic Logging While Drilling Tools[J]. Transactions of China Electrotechnical Society, 2018, 33(20): 4756-4762.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.180283 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I20/4756

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