| 水分对瓦斯运移负效应的分析与实验研究 |
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| 引用本文： | 裴秋艳,王骏辉,王毅. 水分对瓦斯运移负效应的分析与实验研究[J]. 中国矿业, 2017, 26(3) |
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| 作者姓名： | 裴秋艳 王骏辉 王毅 |
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| 作者单位： | 太原理工大学,中国矿业大学,太原理工大学 |
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| 摘 要： | 水分对煤层瓦斯运移的影响,是研究水力压裂等煤层增透技术必须考虑的因素。为了提高水力压裂技术在煤层增透应用中的效用,本文针对水分对瓦斯运移负效应进行了分析,并采用WYS-800伺服自动加载系统,设计实验,深入研究了三轴应力状态下,余吾煤业不同含水率煤样的渗透性能,论证了不同含水率煤在不同围压或者不同有效应力的情况下,其渗透率与渗透速度都随含水率不同呈非线性递减趋势。同时上述结论与水力压裂使裂隙结构改变从而渗透率增加的结论结合,以余吾煤矿为例,在工程应用中找到水力压裂的最佳影响半径,为水力压裂井的布置提供一定的理论和技术支撑。
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| 关 键 词： | 瓦斯运移 含水率 渗透性 孔隙 水力压裂 |
| 收稿时间： | 2017-01-01 |
| 修稿时间： | 2017-02-17 |
Analysis and experimental study on negative effect of water on gas migration |
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| PEI Qiu-yan,WANG Jun-hui and WANG Yi. Analysis and experimental study on negative effect of water on gas migration[J]. CHINA MINING MAGAZINE, 2017, 26(3) |
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| Authors: | PEI Qiu-yan WANG Jun-hui WANG Yi |
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| Affiliation: | Taiyuan University of Technology,Taiyuan,China University of Mining and Technology,Xuzhou,Taiyuan University of Technology,Taiyuan |
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| Abstract: | The negative effect of water on gas migration is analyzed.WYS-800 servo automatic loading system was used to study the permeability of coal with different water content under three axial stress condition.It is found that under different confining pressures or different effective stresses, the permeability and permeability of the coal with different moisture content are nonlinear decreasing trend with the water content.The study , combine with the conclusion that hydraulic fracturing make the fracture structure change permeability increase , find the best influence radius of hydraulic fracturing.Provide some theoretical and technical support for arrangement. |
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| Keywords: | gas migration water content permeability pore Hydraulic fracturing |
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