| 二相随机介质有效电导率的广义混合率模型研究(英文) |
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| 引用本文： | 余勇,吴小平.二相随机介质有效电导率的广义混合率模型研究(英文)[J].应用地球物理,2010,7(3):210-216. |
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| 作者姓名： | 余勇 吴小平 |
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| 作者单位： | |
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| 基金项目： | sponsored by National Natural Science Foundation of China (Grant No. 40874034);the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KZCX2-YW-QN508) |
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| 摘 要： | 广义混合率模型目前多应用于岩石的流变、杨氏模量等力学性质的研究,较少应用于多相介质岩石的有效电导率研究。本文利用三维有限元方法计算得到大量二相随机介质模型的有效电导率数据,引入广义混合率的有效电导率模型进行数据拟合,发现广义混合率模型参数J与两相介质电导率比值有关,并首次获得参数 J 与两相介质电导率比值之间的关系式,据此可以快速准确的预测(计算)任意二相介质的有效电导率,其结果较已有的随机介质模型和有效介质理论模型公式更为准确,为精细储集层评价奠定坚实基础。
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| 关 键 词： | 广义混合率 二相介质 有效电导率 |
| 收稿时间： | 8 March 2006 |
Study of the generalized mixture rule for determining effective conductivity of two-phase stochastic models |
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| Yong?Yu,Xiaoping?Wu.Study of the generalized mixture rule for determining effective conductivity of two-phase stochastic models[J].Applied Geophysics,2010,7(3):210-216. |
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| Authors: | Yong Yu Xiaoping Wu |
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| Institution: | (1) School of Electrical and Electronic Engineering, University of Manchester, Manchester, M60 1QD, UK;(2) Department of Metallurgy and Materials, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK; |
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| Abstract: | The generalized mixture rule (GMR) is usually applied in determining mechanical properties such as the rheological property
and Young’s modulus of multi-phase rocks. However, it is rarely used to determine electrical conductivity of multi-phase rocks
presently. In this paper, we calculate the effective conductivity using the 3D finite element method for a large number of
two-phase medium stochastic models. The GMR is then employed as an effective conductivity model to fit the data. It shows
a very close relationship between the parameter J of GMR and the ratio of conductivities of the two phases. We obtain the equations of the parameter J with the ratio of conductivity of two phases for the first time. On this basis, we can quickly predict (or calculate) the
effective conductivity of any two-phase medium stochastic model. The result is much more accurate than two other available
effective conductivity models for the stochastic medium, which are the random model and effective medium theory model, laying
a solid base for detailed evaluation of oil reservoirs. |
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| Keywords: | Generalized mixture rule two-phase media effective conductivity |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
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