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[1]闫金鹏,刘泽功 ,姜秀雷,等.高瓦斯低透气性煤层水力压裂数值模拟研究[J].中国安全生产科学技术,2013,9(8):27-32.[doi:10.11731/j.issn.1673-193x.2013.08.005]
　YAN Jin peng,LIU Ze gong,JIANG Xiu lei,et al.Numerical simulation on hydraulic fracturing procedure of coal seam with high gas and low air permeability[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2013,9(8):27-32.[doi:10.11731/j.issn.1673-193x.2013.08.005]
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高瓦斯低透气性煤层水力压裂数值模拟研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
9
期数:
2013年8期
页码:
27-32
栏目:
学术论著
出版日期:
2013-08-30

文章信息/Info

Title:
Numerical simulation on hydraulic fracturing procedure of coal seam with high gas and low air permeability
文章编号:
20130805
作者:
闫金鹏 1; 刘泽功 1; 2; 姜秀雷 1; 陈磊 1
（1安徽理工大学 能源与安全学院，安徽淮南232001； 2 煤矿安全高效开采省部共建教育部重点实验室，安徽淮南232001）
Author(s):
YAN Jinpeng1;  LIU Zegong1; 2;  JIANG Xiulei1;  CHEN Lei1
(1 College of Energy and Safety Engineering, Anhui University of Science & Technology, Huainan Anhui 232001, China; 2. Provinal and MOE Joint Established Key Lab of Coal Mine Safety and High Efficient Mining, Anhui Huainan 232001, China)
关键词:
高瓦斯低透气性煤层; 水力压裂; 卸压增透; 数值模拟
Keywords:
high gas and low air permeability coal seam;  hydraulic fracturing;  pressurerelief and permeability increasing;  numerical simulation
分类号:
X913.3
DOI:
10.11731/j.issn.1673-193x.2013.08.005
文献标志码:
A
摘要:
针对高瓦斯低透气性煤层，采用RFPA2D-Flow软件，对水力压裂进行了数值模拟研究，再现了水力压裂过程中压裂孔周围裂纹的生成和扩展、渗透性和应力的变化。模拟结果表明：压裂过程中，裂纹规模和剪应力随着注水压力的不断增加而增大，并且剪应力的增加随着钻孔周围裂纹的扩展不断远离压裂孔，压裂孔周围的渗透性有了很大程度的提高，最大主应力和最小主应力随着注水压力的增加而减小。水力压裂的模拟结果对煤矿高瓦斯低透气性煤层的瓦斯抽采工作具有很重要的指导意义。
Abstract:
In view of the coal seam with high gas and low air permeability, by using numerical simulation software RFPA2DFlow, the hydraulic fracturing procedure was numerically simulated, the generation and extensions of surrounding cracks in fracturing hole, and the change of permeability and stress in the hydraulic fracturing process were recreated The simulation results showed that: During the fracturing process, crack scale and shear stress increases rapidly with the increase of water injection pressure. The shear stress increases with the crack surrounding a borehole expand, and stay away from the pressure hiatus. The permeability around the fracturing hole has been greatly improved. The maximum principal stress and the minimum main stress decrease with the increase of injection pressure. The simulation results of hydraulic fracturing have a very important guiding significance for gas drainage in coal mine with high gas and low air permeability.

参考文献/References:

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2013-09-11