低磁场条件下天然气核磁共振特性的实验研究

波谱学杂志 ›› 2001, Vol. 18 ›› Issue (3): 223-227.

低磁场条件下天然气核磁共振特性的实验研究

王为民^1,2, 郭和坤², 叶朝辉¹

1.中国科学院武汉物理与数学研究所，武汉 430071; 2.石油天然气集团公司中国科学院渗流力学所, 廊坊 065007

收稿日期:2001-04-20 修回日期:2001-05-21 出版日期:2001-09-05 发布日期:2001-09-05
作者简介:王为民(1965-)，男，博士研究生.

THE LABORATORY STUDIES OF NMR PROPERTIES OF NATURAL GAS IN LOW MAGNETIC FIELD

WANG Wei-min^1,2, GUO He-kun², YE Chao-hui¹

1.Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences, Wuhan 430071;
2.Institute of Porous Flow and Fluid Mechanics, CNPC and the Chinese Academy o f Sciences, Langfang 065007

Received:2001-04-20 Revised:2001-05-21 Online:2001-09-05 Published:2001-09-05

摘要/Abstract

摘要：

研究天然气在低磁场条件下的核磁共振弛豫特性及含烃因子的变化对天然气的勘探和开发工作具有重要意义，由于受核磁共振仪器耐温、耐压条件的限制，这方面的研究工作非常少，国内还是空白. 本文在一套自行研制的耐高温、耐高压的低磁场(磁场强度0.056T )核磁共振设备上，对我国大庆油田深层天然气的核磁共振特性进行了实验研究，获得了天然气的T₁弛豫时间、含烃因子随温度和压力变化的函数关系. 本文的研究内容对我国正在开展的核磁共振测井工作具有重要的参考价值.

关键词: 核磁弛豫, 含烃因子, 天然气

Abstract:

It is very important for natural gas exploration and development to study the NM R properties of natural gas in a low magnetic field. Few studies have been
reported on this subject mainly due to the restriction of high temperature and h igh pressure. In this work, a home-made NMR instrument, which could bear both high temperature and high pressure, was developed. The magnetic field is 0.056Tesla. The NMR properties of natural gas from deep formation of Daqing oil field were ex plored. The relationships among relaxation time, hydrocarbon factor, temperat ure, and pressure were extracted, resulting in useful information in the application o f NMR logging.

Key words: NMR relaxation, Hydrocarbon factor, Natural gas

中图分类号:

O482.53⁺²

王为民, 郭和坤, 叶朝辉. 低磁场条件下天然气核磁共振特性的实验研究[J]. 波谱学杂志, 2001, 18(3): 223-227.

WANG Wei-min, GUO He-kun, YE Chao-hui. THE LABORATORY STUDIES OF NMR PROPERTIES OF NATURAL GAS IN LOW MAGNETIC FIELD[J]. Chinese Journal of Magnetic Resonance, 2001, 18(3): 223-227.

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