岩石电参数测试系统的研究

发布时间：2018-03-11 14:14

本文选题：岩石勘探　切入点：介电常数　出处：《电子科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着21世纪的经济迅速发展,人们现代化生活日新月异,工业化生产越来越具规模,石油逐渐成为人们日常生活中必不可缺的生活资源,对于现代化工业生产的加工设备也成为一种必需的能源材料。现在我们对于石油资源的勘探主要采用的是一种利用不同介质材料的物理性质不同的原理方法来进行实施的。研究各种材料电参数的测试原理已经有很长的历史,对于电参数测试方法来说,不同时代的电磁建模具有不同的理论水平,不同的方程式求解途径以及测试仪器的粗细精度水平不同,它们共同对电参量测试技术的发展产生了重要影响。本论文着重分析了开口同轴探头的测量原理,在该测试系统中开口同轴探头是传感器,具有超宽频特性,可广泛应用于各种介质材料的电参量的测试。随着测试技术的快速发展,同轴探头测试技术越来越具有很好的科研研究价值和发展实用空间。在钻孔雷达的探测中,介质介电常数的设置直接关系到探测深度的准确程度。不同地区或工程中介质的(相对介电常数)往往差别很大。介质的r?是个动态参量,即使是同一介质,由于其所处的物质架构和物理环境的不同,它的r?也不相同。所以,在实际工作中就必须要因地制宜,对现场待测介质的r?进行采样测量。对于大多数的科研生产单位来说,他们并不具备在实验室中直接采用介电常数测试仪来精确测量待测样品介电常数的条件。所以,本论文主要开展针对钻孔雷达岩石介电常数测试系统的研究。我们利用已有的微波测试原理,第一,介绍了已有的测量材料电参数的测试方法,分析和归纳了各种测试方法的优缺点;第二,着重研究了开口同轴探头测量技术基本原理,其中包括其物理模型和理论模型的发展及现状,并根据谱域准静态模型算法利用Matlab软件设计了简单快捷的数据计算界面;第三,结合实验室自身条件的情况下,基于电磁仿真工具软件CST对整个测试系统进行了电磁仿真,公式推导,程序编写运行和样品实际测量,搭建了实验测试系统平台;第四,得到满足精度要求的测量结果,与安捷伦公司已有的电参数测量仪器测得的数据进行比较,并进行误差分析。通过对地下岩石样品电参数的测量,可以满足钻孔雷达勘探对于地下石油位置的获取,对于微波遥感具有重要的意义。
[Abstract]:With the rapid development of economy in 21th century, people's modern life is changing with each passing day, and industrial production is becoming more and more large-scale. Oil has gradually become an indispensable living resource in people's daily life. Processing equipment for modern industrial production has also become a necessary energy material. Now our exploration for petroleum resources is mainly based on the principle of different physical properties of different medium materials. It has a long history of studying the testing principles of electrical parameters of various materials. For electric parameter testing methods, electromagnetic modeling in different times has different theoretical levels, different ways of solving equations and different precision levels of measuring instruments. In this paper, the measurement principle of the open coaxial probe is analyzed. In this system, the open coaxial probe is a sensor, and it has the characteristic of ultra wide band (UWB). With the rapid development of testing technology, coaxial probe testing technology has more and more scientific research value and practical space. In drilling radar detection, The setting of dielectric permittivity is directly related to the accuracy of the detection depth. The dielectric (relative permittivity) of different regions or projects often varies greatly. Is a dynamic parameter, even if the same medium, because of its physical structure and physical environment, its r? Also not the same. Therefore, in the actual work must be in line with the local conditions, on the site of the medium to be measured r? For most research and production units, they do not have the conditions to accurately measure the permittivity of the samples to be tested directly in the laboratory by means of a permittivity tester. This paper mainly focuses on the research of rock dielectric constant measurement system based on borehole radar. We use the existing microwave testing principle. Firstly, we introduce the existing measurement methods for measuring the electrical parameters of materials. The advantages and disadvantages of various testing methods are analyzed and summarized. Secondly, the basic principle of open coaxial probe measurement technology is emphatically studied, including the development and present situation of its physical model and theoretical model. According to the spectral domain quasi-static model algorithm, a simple and fast data calculation interface is designed by using Matlab software. Thirdly, the electromagnetic simulation of the whole test system is carried out based on the electromagnetic simulation tool CST under the condition of the laboratory itself. Formula derivation, programming operation and sample actual measurement, the experimental test system platform was set up. 4th, the measurement results satisfying the precision requirements were obtained and compared with the measured data obtained by the electrical parameter measuring instruments of Agilent Company. Through the measurement of electrical parameters of underground rock samples, it can be satisfied that drilling radar exploration can obtain the location of underground oil, and it is of great significance for microwave remote sensing.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.3

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