[1]徐 刚,金洪伟,李树刚,等.不同坚固性系数f值煤渗透率分布特征及其井下水力压裂适用性分析[J].西安科技大学学报,2019,(03):443-451.[doi:10.13800/j.cnki.xakjdxxb.2019.0309]
 XU Gang,JIN Hong-wei,LI Shu-gang,et al.Distribution characteristics of coal seam permeability with different solidity coefficient f and applicability analysis of hydraulic fracturing of underground coal mine[J].Journal of Xi'an University of Science and Technology,2019,(03):443-451.[doi:10.13800/j.cnki.xakjdxxb.2019.0309]
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不同坚固性系数f值煤渗透率分布特征及其井下水力压裂适用性分析(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2019年03期
页码:
443-451
栏目:
目次
出版日期:
2019-05-30

文章信息/Info

Title:
Distribution characteristics of coal seam permeability with different solidity coefficient f and applicability analysis of hydraulic fracturing of underground coal mine
文章编号:
1672-9315(2019)03-0443-09
作者:
徐 刚12金洪伟12李树刚12郝 萌1
(1.西安科技大学 安全科学与工程学院,陕西 西安 710054; 2.西安科技大学 西部矿井开采及灾害防治教育部重点实验室,陕西 西安 710054)
Author(s):
XU Gang12JIN Hong-wei12LI Shu-gang12HAO Meng1
(1.College of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Key Laboratory of Western Mine Exploitation and Hazard Prevention,Ministry of Education, Xi'an University of Science and Technology,Xi'an 710054,China)
关键词:
煤层渗透率 坚固性系数 水力压裂 瓦斯抽采
Keywords:
coal seam permeability solidity coefficient hydraulic fracturing gas extraction
分类号:
TD712
DOI:
10.13800/j.cnki.xakjdxxb.2019.0309
文献标志码:
A
摘要:
针对煤层水力压裂存在的盲目性和效果不确定性等焦点问题,首先以潞安矿区夏店煤矿为例,通过渗透性实验研究了煤坚固性系数f值,煤体结构和渗透率之间的关系,构建了基于坚固性系数的煤层水力压裂渗透率预测模型; 然后在分析煤层水力压裂增透机理的基础上,研究了不同煤坚固性系数煤层水力压裂的适用性。结果表明:煤体渗透率与坚固性系数f值的关系近似呈正态分布,存在某一确定的fc值使煤渗透率最大; 煤层水力压裂的适用性与其坚固性系数大小有关,当压裂前煤f值小于fc值时,水力压裂增透作用效果有限; 当压裂前煤f值大于fc值时,压裂后煤渗透率增加较多,增透效果较好,适用于井下水力压裂技术的实施。工程应用结果与理论分析结果一致。
Abstract:
Aiming at the focal problems such as the blindness and the uncertainty of the hydraulic fracturing in coal seam,taking Lu'an Coalfield as an example,the relationship between coal solid coefficient f and coal body structure and coal seam permeability was studied through the permeability experiment,and the permeability prediction model of coal seam hydraulic fracturing based on the solid coefficient is constructed.Then on the basis of analyzing the mechanism of coal seam hydraulic fracturing increasing permeability,the effect of hydraulic fracturing with different coal solidity coefficient has been studied.The results show that the relationship between coal permeability and solid coefficient f is approximately normal distribution,and there is a certain fc value that makes the coal permeability maximum.The applicability of hydraulic fracturing is related to the size of solidity coefficient,when the f value of coal before fracturing is less than the fc value,the effect of hydraulic fracturing is limited.When the f value of coal before fracturing is greater than the fc value,the permeability of coal increases greatly and the effect of antireflection is better after fracturing,which is suitable for the implementation of hydraulic fracturing technology.The application results agree with the theoretical analysis results.

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备注/Memo

备注/Memo:
收稿日期:2018-09-01 责任编辑:杨泉林 基金项目:国家重点研发计划(2018YFC0807805,2018YFC0808303); 国家自然科学基金(51404189,51404190); 陕西省自然科学基础研究计划(2015JQ5191,2019JM-072); 西安科技大学博士后启动金(2018QDJ053) 通信作者:徐 刚(1981-),男,河南南阳人,副教授,硕士生导师,E-mail:xugang25193@126.com 徐 刚,金洪伟,李树刚,等.不同坚固性系数f值煤渗透率分布特征及其井下水力压裂适用性分析[J].西安科技大学学报,2019,39(3):443-451. XU Gang,JIN Hong-wei,LI Shu-gang,et al.Distribution characteristics of coal seam permeability withdifferent solidity coefficient f and applicability analysisof hydraulic fracturing of underground coal mine[J].Journal of Xi'an University of Science and Technology,2019,39(3):443-451.
更新日期/Last Update: 2019-05-30