水合物沉积物电阻特性研究初探

任静雅; 鲁晓兵; 张旭辉

水合物沉积物电阻特性研究初探 English Version

中国科学院力学研究所，北京 100080

基金项目: 国家自然科学基金项目（51239010；11102209）

详细信息

作者简介:
任静雅(1988- )，女，硕士研究生，工程力学专业。E-mail: xblu@imech.ac.cn。

中图分类号: TE122；P631
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出版历程
- 收稿日期: 2013-03-01
- 发布日期: 2013-07-18

Preliminary study on electric resistance of hydrate-bearing sediments

Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China

摘要

摘要: 电阻法是探测水合物的一项有效技术手段。通过模拟试验，研究水合物沉积物电阻特性与水合物饱和度等因素的关系，对水合物勘探及储量估算具有重要的意义。通过试验室制样获得粉细砂和黏土骨架的含四氢呋喃（四氢呋喃）水合物土样并对其电阻进行研究。结果发现，当沉积物孔隙中不含液体且骨架的干密度小于一定值时，水合物沉积物的电阻随水合物质量含量的增加而减小，变化范围随干密度的增加而减小；当沉积物孔隙中水合物和液态四氢呋喃共存时，合成试样的四氢呋喃体积分数越大，孔隙中液态四氢呋喃越多，沉积物电阻也就越大，且随水合物饱和度的增加而减小。
- 四氢呋喃 /
- 水合物 /
- 电阻法
Abstract: The electric resistance method is an effective way for hydrate detection. It’s necessary to understand the effects of the main factors such as hydrate saturation on the electric resistance of hydrate-bearing sediments through experiments. It is of great significance to hydrate exploration and reserve estimation. By preparing hydrate-bearing samples with fine sand and clay skeletons, the electric resistance is studied. It is found that when there is no pore fluid in the samples and meanwhile the dry density of the skeletons is less than a certain value, the electric resistance of the hydrate-bearing sediments decreases with the increase of hydrate saturation. The change range decreases with the increase of dry density. When the hydrate and liquid THF coexist in the pores, the greater the volume fraction of the THF formed hydrate is and the more pore liquid THF exists, the greater the sediment resistance is. The electric resistance decreases with the increase of the hydrate saturation.
- THF /
- hydrate /
- electric resistance method

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参考文献(1)

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