| 煤储层渗透率动态变化效应研究 |
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| 引用本文： | 陈金刚,徐平,赖永星,杜云海.煤储层渗透率动态变化效应研究[J].岩土力学,2011,32(8):2512-2516. |
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| 作者姓名： | 陈金刚 徐平 赖永星 杜云海 |
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| 作者单位： | 1.郑州大学 工程力学系 郑州 450001；2.郑州大学 水利与环境学院 郑州 450001 |
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| 基金项目： | 国家自然科学基金资助项目(No.50709030,51008286); 郑州大学国家大学生创新性实验资助项目(No.091045927) |
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| 摘 要： | 基于现代测试技术和煤层气井实测排采数据，采用物理模拟和数值模拟研究方法，探讨了开采过程中煤储层渗透率动态变化效应。研究结果表明，试验模拟和数值模拟渗透率数值相差较大，可达1～2个数量级；煤储层渗透率动态变化效应呈现出两种相反的规律，即数值模拟渗透率随流体压力降低而衰减，试验模拟渗透率随流体压力降低而增大，两种模拟渗透率动态变化特征看似相互矛盾，实则相互衔接，预示煤储层渗透率在排采过程中会逐渐得以改善。根据分析，揭示了二者差异性的根本原因。提出在整个排采过程中，应采用动态渗透率指标，不断调整和优化工作制度
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| 关 键 词： | 煤储层 渗透率 动态变化 效应 |
| 收稿时间： | 2010-07-07 |
Research on dynamic variation effect of coal reservoirs permeability |
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| CHEN Jin-gang,XU Ping,LAI Yong-xing,DU Yun-hai.Research on dynamic variation effect of coal reservoirs permeability[J].Rock and Soil Mechanics,2011,32(8):2512-2516. |
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| Authors: | CHEN Jin-gang XU Ping LAI Yong-xing DU Yun-hai |
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| Institution: | 1. Department of Engineering Mechanics, Zhengzhou University, Zhengzhou 450001, China; 2. College of Water Conservancy and Environment, Zhengzhou University, Zhengzhou 450001, China |
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| Abstract: | Based on the modern testing technologies and actual measuring data of coalbed methane(CBM) well,using physical and numerical simulation methods,the dynamic variation effect of coal reservoirs permeability during gas recovery has been discussed.The results indicate that permeability has larger difference,which may reach 1-2 order of magnitude;the two opposite regularities of dynamic variation of coal reservoirs permeability are presented between experimental simulation and numerical simulation;that is to say... |
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| Keywords: | coal reservoirs permeability dynamic variation effect |
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