微波随钻井下通信的激励结构研究  

Study on the Excitation Structure of Microwave Communication while Drilling

作　　者：李卫东 过方舟 韩祎炜 LI Weidong;GUO Fangzhou;HAN Yiwei(College of Electrical Information,Southwest Petroleum University,Chengdu 610500,China;Beijing Institute of Radio Measurement,Beijing 100084,China)

机构地区：[1]西南石油大学电气信息学院,成都610500 [2]北京无线电测量研究所,北京100084

出　　处：《微波学报》2024年第S1期117-120,共4页Journal of Microwaves

摘　　要：微波随钻通信能够解决气体钻井随钻测量数据通信问题的研究前沿。本文基于环形激励,提出了一种适用于复杂井下环境的双激励结构,以此增强通信系统在井下通信的可靠性。同时,增设套筒结构,在减弱气流对激励结构影响的同时,避免随钻测量工具下井时对激励的冲击。针对环形双激励结构,提出了三段套筒结构。研究了套筒形状、长度、固定销钉材质以及销钉数量对激励性能的影响,对套筒及固定销钉进行了优化,最终仿真结果显示,单个铜销钉激励结构在2.42-2.5 GHz频段回波损耗低于-10 dB,两个铜销钉的激励结构在2.44-2.5 GHz频段回波损耗低于-10 dB,PEK销钉激励结构在2.43-2.5 GHz频段回波损耗低于-10 dB。The forefront of research on microwave while-drilling communication addresses the issue of measurement-while-drilling data transmission in gas drilling.This paper proposes a dual excitation structure based on ring excitation to enhance the reliability of underground communication systems in complex underground environments.Additionally,a sleeve structure is introduced to mitigate the impact of airflow on the excitation structure and prevent interference during operation of the measurement while drilling tool.A three-section sleeve structure is proposed for the ring dual-excitation configuration.The influence of sleeve shape,length,fixed pin material,and number of pins on excitation performance is investigated and optimized accordingly.Simulation results demonstrate that a single copper pin excitation structure achieves a return loss lower than-10 dB at 2.42-2.5 GHz band.For an excitation structure with two copper pins within the 2.44-2.5 GHz band,the return loss remains below-10 dB.Similarly,for PEK pin excitation structures operating within the 2.43-2.5 GHz band.

关 键 词：气体钻井 微波井下通信 激励结构 TE_(11)模 

分 类 号：TN919[电子电信—通信与信息系统] TE24[电子电信—信息与通信工程]