井中雷达的瞬态电磁波传输特性及实验验证(英文)  

Transient electromagnetic wave transmission characteristics and experimental verification of borehole radar

作　　者：常兴浩[1] 赵青[2] 马春光[2] 常文会[1] 秦龙[2] 冉利民[1] 

机构地区：[1]中国石化华北石油工程有限公司,郑州450006 [2]电子科技大学物理电子学院,成都610054

出　　处：《强激光与粒子束》2014年第3期192-196,共5页High Power Laser and Particle Beams

基　　金：Supported by National Natural Science Foundation of China(No.11275045,11274058);International S&T CooperationProgram of China(No.2011DFA63190)

摘　　要：研究了瞬态电磁波在地层中的传输特性,为井中雷达系统设计和地层信息解释提供重要依据。通过对传播速度和衰减系数的理论计算,确定目标物与井眼间的距离以及井中雷达最大的探测距离。基于以上雷达波传输特性的理论研究,设计了一个井中雷达系统。为了验证该系统的工作性能,在石灰岩地层中开展了实验测试。实验结果表明:该雷达系统能够探测到距离井眼8m远的金属目标。The borehole radar is a kind of geophysical exploration tool based on high-frequency pulse electromagnetic(EM)wave transmission for detecting subsurface information.In this work,the transmission characteristics of transient EM wave were studied for designing borehole radar system and interpreting subsurface information.Propagation speed and attenuation coefficient were theoretically studied to find out the distance between the target and the borehole,as well as the maximum detection range of the borehole radar.Based on the theoretical study,we designed a borehole radar system.In order to verify the system,field experiments were carried out in a limestone stratum.The experimental results demonstrate that the system can effectively detect a metal target 8maway from the borehole.

关 键 词：井中雷达 传输速度 衰减系数 探测距离 

分 类 号：TN011[电子电信—物理电子学]