| 便携式岩样核磁共振分析仪磁体的设计 |
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| 引用本文： | 孙威,王为民,谷长春,张研蕾. 便携式岩样核磁共振分析仪磁体的设计[J]. 波谱学杂志, 2004, 21(3): 337-344 |
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| 作者姓名： | 孙威 王为民 谷长春 张研蕾 |
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| 作者单位： | 1.石油天然气集团公司中国科学院渗流力学研究所, 河北 廊坊 065007; ;2.北京大学 量子信息与测量教育部重点实验室, 北京 100871; ;3.华北石油管理局 第一钻井工程公司科技中心，河北 廊坊 065007 |
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| 摘 要： | 核磁共振中的磁体设计有许多方案，但是要使磁体体积小、重量轻、均匀区大、稳定性好，将面临一系列的问题. 而这些问题的解决主要依赖于电磁场计算. 文中首先阐述这些问题，然后对方案进行优化分析计算，从中找出一个最佳的解决方案. 采用本方案研制出来磁体，我们研制成功了便携式核磁共振岩样分析仪. 经过多次的现场实验测试表明由该磁体构成的磁共振岩样分析仪的稳定性高、重复性好、满足现场恶劣的环境要求.
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| 关 键 词： | 核磁共振 永磁磁体 电磁场 稳定性 重复性 |
| 文章编号： | 1000-4556(2004)03-0337-08 |
| 收稿时间： | 2004-02-19 |
| 修稿时间： | 2004-02-19 |
DESIGN OF A MAGNET USED IN A PORTABLE NMR ROCK ANALYZER |
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| SUN Wei,WANG Wei-min,GU Chang-chun,ZHANG Yan-lei Institute of porous Flow and Fluid Mechanics,CNPC and the Chinese Academy of Sciences,Langfang ,China Quantum information and measurement Key Laboratory the Ministry of Education Peking University,Beijing ,China No. Drilling Engineering Co. of Huabei Petroleum Administration Bureau CNPC,Langfang ,China. DESIGN OF A MAGNET USED IN A PORTABLE NMR ROCK ANALYZER[J]. Chinese Journal of Magnetic Resonance, 2004, 21(3): 337-344 |
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| Authors: | SUN Wei WANG Wei-min GU Chang-chun ZHANG Yan-lei Institute of porous Flow Fluid Mechanics CNPC the Chinese Academy of Sciences Langfang China Quantum information measurement Key Laboratory the Ministry of Education Peking University Beijing China No. Drilling Engineering Co. of Huabei Petroleum Administration Bureau CNPC Langfang China |
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| Affiliation: | 1.Institute of porous Flow and Fluid Mechanics, CNPC and the Chinese Academy of Sciences, Langfang 065007, China; 2.Quantum information and measurement Key Laboratory the Ministry of Education Peking University, Beijing 100871, China; 3.No.1 Drilling Engineering Co. of Huabei Petroleum Administration Bureau CNPC, Langfang 065007, China |
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| Abstract: | There are many ways of design for the magnets used in nuclear magnetic reso-nance. However, it is always challenging to make the magnet small, light, stable andhaving large volume with uniform magnetic field. Solution to this challenge lies in accu-rate computation of the electromagnetism field. In this paper, we first briefly reviewedthe problerns in magnet design, and then showed how to optimize the different ways ofmagnet design. An optimized magnet design was proposed, based on which a portableNMR cock analyzer was built successfully. The results from a number of on site testsshowed that the portable NMR rock analyzer we built has high stability and good repro-ducibility, and is suitable for working under severe conditions. |
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| Keywords: | NMR permanent magnet electromagnetic field stability reproducibility |
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