基于双重逾渗模型的裂隙多孔介质连通性研究
文献类型：期刊论文
| 作者 | 郑委 ; 鲁晓兵; 刘庆杰; 张旭辉
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| 刊名 | 岩石力学与工程学报
 |
| 出版日期 | 2011 |
| 卷号 | 30期号:6页码:1289-1296 |
| 通讯作者邮箱 | mr.zhengw@gmail.com |
| 关键词 | 岩石力学 双重逾渗 连通性 裂隙逾渗 孔隙逾渗 |
| ISSN号 | 1000-6915 |
| 其他题名 | STUDY OF CONNECTIVITY OF FRACTURED POROUS MEDIA BASED ON DUAL-PERCOLATION MODEL |
| 产权排序 | 中国科学院力学研究所水动力学与海洋工程重点实验室;中国石油勘探开发研究院采收率所 |
| 通讯作者 | 郑委 |
| 中文摘要 | 孔隙和裂隙是裂隙多孔介质的2种渗流通道。在低渗和特低渗情况下,孔隙和裂隙能否构成贯穿的通道,决定介质能否发生渗流。针对低渗和特低渗裂隙多孔介质的连通性,结合孔隙逾渗理论和裂隙逾渗理论,提出一种双重逾渗模型。基于该模型,提出能够反映和比较裂隙多孔介质连通性的2个量化参数A_0和D,并重点讨论这2个量化参数物理意义。根据A_0和D这2个参数分析裂隙多孔介质的连通性特征。分析结果表明,以D=2为临界值,可以将裂隙多孔介质分为3种类型:"弥散型"、"临界型"、"指向型"。当D>2时,介质具有自封闭趋势,属于"指向型";随着孔隙连通和裂隙方向随机性的增强,这种自封闭趋势会被破坏,使介质趋向于"弥散型",即利于连通。少量长裂隙的存在对介质的连通性起决定作用。 |
| 英文摘要 | Pores and fractures are two main flow channels in fractured porous media.Under low and ultra-low permeability conditions,whether seepage occurs in media or not is decided by whether pores and fractures can form a penetrated channel or not.A dual-percolation model coupled the pore percolation theory and the fracture percolation theory is presented to study the conductivity of the low and ultra-low fractured porous media.Based on the presented dual-percolation model,two parameters and D are presented to reflect and compare the conductivities of fractured porous media;and the physical meaning of these two parameters is quantitatively discussed.The connectivity of low and ultra-low permeability fractured porous media is investigated based on these two parameters.It is shown that the low and ultra-low permeability fractured porous media can be generally divided into three types by taking as the critical value,i.e.dispersion type,critical type,and directional type.Media are self-sealing when and they can be named as directional type.However,with the enhancements of randomnesses of porous connectivity and fracture directions,the self-sealing tendency will be destroyed and the conductivity will increase,which causes the media tending to become dissipation type.A few long fractures can play a great role on the connectivity of media. |
| 学科主题 | 力学 |
| 收录类别 | EI ; CSCD |
| 资助信息 | 国家重点基础研究发展计划(973)项目(2006CB705800) |
| 原文出处 | http://epub3.cnki.net/grid2008/brief/detailj.aspx?filename=YSLX201106029&dbname=CJFQ2011 |
| 语种 | 中文 |
| CSCD记录号 | CSCD:4283572 |
| 公开日期 | 2012-04-01 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/45053]  |
| 专题 | 力学研究所_水动力学与海洋工程重点实验室(2009-2011) |
| 推荐引用方式 GB/T 7714 | 郑委,鲁晓兵,刘庆杰,等. 基于双重逾渗模型的裂隙多孔介质连通性研究[J]. 岩石力学与工程学报,2011,30(6):1289-1296. |
| APA | 郑委,鲁晓兵,刘庆杰,&张旭辉.(2011).基于双重逾渗模型的裂隙多孔介质连通性研究.岩石力学与工程学报,30(6),1289-1296. |
| MLA | 郑委,et al."基于双重逾渗模型的裂隙多孔介质连通性研究".岩石力学与工程学报 30.6(2011):1289-1296. |
入库方式： OAI收割
来源：力学研究所
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