A dual percolation model for predicting the connectivity of fractured porous media

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• 作者：Pingkang Wang ; Xuhui Zhang ; Xiaobing Lu ; Wei Zheng ; Qingjie Liu
• 关键词：Dual ; percolation ; connectivity ; fracture percolation ; pore percolation
• 刊名：Water Resources
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：43
• 期：1
• 页码：95-110
• 全文大小：3,366 KB
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• 作者单位：Pingkang Wang (1)
  Xuhui Zhang (2)
  Xiaobing Lu (2)
  Wei Zheng (2)
  Qingjie Liu (3)
  
  1. Centre for Gas Hydrate, Oil and Gas Survey, China Geological Survey, Beijing, China
  2. Key Laboratory for Mechanics of Fluid Solid Coupling System, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
  3. State Key Laboratory for Enhanced Oil Recovery, Research Institute of Exploration and Development of PetroChina, Beijing, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Hydrogeology
  Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-344X

文摘

This paper presents a dual-percolation model coupling the percolation theory and the fracture percolation theory to study the conductivity of the fractured porous media. The Monte-Carlo method is used in the numerical simulation. First an appropriate computing scale by considering the calculation precision and elapsed time together is validated. Then, two parameters, A ₀ and D are presented in this model to determine the conductivity of the media. Generally the media can be blocked by itself in the condition of D > 2. However, the increase of pore connection and the randomness of fracture direction may release the selfblockage, increase the conductivity and make the dual porous media dissipated. A few long fractures can play a great role in the connection of media. Keywords Dual-percolation connectivity fracture percolation pore percolation