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南海神狐海域地层渗透率与含水合物饱和度关系研究(英文)
引用本文:李传辉,;赵倩,;徐红军,;冯凯,;刘学伟.南海神狐海域地层渗透率与含水合物饱和度关系研究(英文)[J].应用地球物理,2014,11(2):207-214.
作者姓名:李传辉  ;赵倩  ;徐红军  ;冯凯  ;刘学伟
作者单位:[1]中国地质大学北京地球物理与信息技术学院,北京100083; [2]Department of MathematicalSciences, University of Wisconsin-Milwaukee,Milwaukee, WI53201-0413, USA; [3]中国石油测井重点实验室 中国石油,北京100083; [4]中国石油海外勘探开发公司,北京100034
基金项目:supported by the Key Program for International S&T Cooperation Projects of China(No.2010DFA21630);the National Natural Science Foundation of China(No.41306050)
摘    要:本文利用取自南海神狐海域钻井岩芯进行了核磁共振测量,研究了岩石中所含水合物对地层渗透率的影响,该岩芯样品为一"孔隙充填型"水合物样品。核磁共振测量结果表明岩石中所含水合物对地层渗透率影响很大,随着含水合物饱和度的增加,地层渗透率迅速降低。通过对测量结果的进一步分析可知"孔隙充填型"水合物对地层渗透率的影响-存在多方面的因素,包括水合物对地层孔隙度、孔隙迂曲度的影响以及对水合物对孔隙喉道的堵塞等。最后本文利用Masuda下降模型建立了适用于南海神狐海域的相对渗透率与含水合物饱和度的经验公式,下降指数N=7.9718。

关 键 词:天然气水合物  渗透率  核磁共振实验  南海神狐海域

Relation between relative permeability and hydrate saturation in Shenhu area,South China Sea
Chuan-Hui Li,Qian Zhao,Hong-Jun Xu,Kai Feng,Xue-Wei Liu.Relation between relative permeability and hydrate saturation in Shenhu area,South China Sea[J].Applied Geophysics,2014,11(2):207-214.
Authors:Chuan-Hui Li  Qian Zhao  Hong-Jun Xu  Kai Feng  Xue-Wei Liu
Institution:1. School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing, 100083, China
2. Department of Mathematical Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, 53201-0413, USA
3. Key Lab of Well Logging, PetroChina, Beijing, 100083, China
4. China National Oil and Gas Exploration and Development Corporation, Beijing, 100034, China
Abstract:Nuclear magnetic resonance measurements in hydrate-bearing sandstone samples from the Shenhu area, South China Sea were used to study the effect of gas hydrates on the sandstone permeability. The hydrate-bearing samples contain pore-filling hydrates. The data show that the pore-filling hydrates greatly affect the formation permeability while depending on many factors that also bear on permeability; furthermore, with increasing hydrate saturation, the formation permeability decreases. We used the Masuda model and an exponent N = 7.9718 to formulate the empirical equation that describes the relation between relative permeability and hydrate saturation for the Shenhu area samples.
Keywords:Gas hydrate  permeability  NMR  Shenhu area
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