| 水压致裂作用对岩石渗透率影响数值模拟 |
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| 引用本文： | 姜文忠,张春梅,姜勇,孙维吉.水压致裂作用对岩石渗透率影响数值模拟[J].辽宁工程技术大学学报(自然科学版),2009,28(5). |
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| 作者姓名： | 姜文忠 张春梅 姜勇 孙维吉 |
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| 作者单位： | 1. 中国矿业大学,安全工程学院,江苏,徐州,221116;煤炭科学研究总院,沈阳研究院,辽宁,沈阳,110016
2. 辽宁工程技术大学,力学与工程学院,辽宁,阜新,123000 |
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| 基金项目： | 国家重点基础研究发展计划基金资助项目 |
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| 摘 要： | 针对在低渗透油、气田和煤层气开采过程中,水压致裂增透机理应用中的问题.基于流固耦合理论,考虑损伤和应力变化对渗透率的影响,运用岩石破裂过程流固耦合分析系统RFPA,进行了单孔水压致裂过程对岩石渗透率影响的数值模拟研究.实验结果表明,水力压裂过程中水压力不断增加致使裂隙萌生、扩展,岩石破裂失稳;水压力与裂隙长度呈强烈非线性关系;裂隙扩展提高岩体渗透率,渗透率数值上增加1-2个数量级,裂隙扩展过程中主裂隙附近岩体渗透率高于非破坏区岩体渗透率.
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| 关 键 词： | 水压力 裂隙扩展 渗透率 |
Numerical simulation of rock permeability enhanced by hydraulic fracturing |
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| JIANG Wenzhong,ZHANG Chunmei,JIANG Yong,SUN Weiji.Numerical simulation of rock permeability enhanced by hydraulic fracturing[J].Journal of Liaoning Technical University (Natural Science Edition),2009,28(5). |
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| Authors: | JIANG Wenzhong ZHANG Chunmei JIANG Yong SUN Weiji |
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| Institution: | JIANG Wenzhong1,2,ZHANG Chunmei3,JIANG Yong3,SUN Weiji3(1.China University of Mining and Technology,Xuzhou 221116,China,2.Shenyang Branch off China Coal Research Institute,Shenyang 110016,3.School of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China) |
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| Abstract: | In the production process within a low permeable oil and gas reservoir,and a coal seam,hydraulic fracturing technique is of significance to the production.Based on the theory of fluid-solid coupling,accounting for the effect on permeability by damage and stress,a numerical simulation is conducted to simulate the permeability enhanced by hydraulic fracturing in a rectangular rock which contains a single borehole using a permeable flow-stress coupled analysis system(RFPA).Experimental results show that with t... |
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| Keywords: | water pressure fracture extension permeability |
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