大水泥岩样的电脉冲压裂实验研究

付荣耀; 孙鹞鸿; 刘坤; 高迎慧; 徐旭哲; 严萍

doi:10.11884/HPLPB201830.170347

大水泥岩样的电脉冲压裂实验研究

doi: 10.11884/HPLPB201830.170347

付荣耀^{1, 2, 3,},
孙鹞鸿^{1, 2, 3, ,},
刘坤^{1, 2, 3},
高迎慧^{2, 3},
徐旭哲^{2, 3},
严萍^{1, 2, 3}

1.
中国科学院大学, 北京 100049
2.
中国科学院电工研究所, 北京 100190
3.
中国科学院电工研究所, 电力电子与电气驱动重点实验室, 北京 100190

基金项目:

国家自然科学基金项目 51577176

详细信息

作者简介:
付荣耀(1986—), 男，博士，从事脉冲功率技术及其应用研究; furongyao@mail.iee.ac.cn

通讯作者:
孙鹞鸿(1968—), 男，研究员，从事脉冲功率技术及其应用研究; yhsun@mail.iee.ac.cn

中图分类号: TM89
计量
- 文章访问数: 1034
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- 被引次数: 0
出版历程
- 收稿日期: 2017-09-01
- 修回日期: 2017-11-27
- 刊出日期: 2018-04-15

Experimental study of fracturing under electric pulse for large cement sample

Fu Rongyao^{1, 2, 3
,},
Sun Yaohong^{1, 2, 3
, ,},
Liu Kun^{1, 2, 3},
Gao Yinghui^{2, 3},
Xu Xuzhe^{2, 3},
Yan Ping^{1, 2, 3}

1.
University of Chinese Academy of Sciences, Beijing 100049, China
2.
Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
3.
Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China

摘要

摘要: 在20 kV/40 kJ的重复频率压裂系统实验平台上，对大水泥岩样进行了电脉冲水中放电压裂实验。为了模拟井下实际工况，实验时将放电电极装入带有射孔的绝缘套管。水中脉冲放电时岩样中产生定向冲击压力波，冲击波作用于岩层使其产生裂缝。实验结果表明，冲击波通过绝缘套管作用于岩样时有一定的能量损失，部分冲击波压力会施加于绝缘套管，绝缘套管在整个实验期间没有发生形变，电脉冲放电对套管损伤作用极小，重复压裂冲击波会通过射孔在岩样上形成一定规模的微裂缝。去掉绝缘套管后，裸电极作用于岩样造缝效果会更好，裂缝明显的呈现对称规则。
- 重复频率 /
- 脉冲放电 /
- 压裂 /
- 绝缘套管 /
- 冲击波
Abstract: The electric pulse discharge experimental platform of 20 kV/40 kJ was set up and the impact fracture test of large cement sample was carried out. In order to simulate the actual working conditions, the discharge electrode was put into an insulated sleeve with perforation. While discharging in water, the directional impact pressure wave was produced in the rock sample, and the shock wave acted on the rock layer to produce cracks. The experimental results show that when the shock wave produced by the repeated electric pulse discharge acted on the big cement sample, it caused cracks on a certain scale, and the cracks on the rock sample surface are symmetrical. There was a certain energy loss when the shock wave moved through the insulating sleeve and part of the shock wave pressure was applied to the insulating sleeve, but the insulating sleeve did not deform during the discharging. The damage of electric pulse discharge on insulating sleeve is minimal.
- repetition rate /
- pulsed discharge /
- fracture /
- insulating sleeve /
- shockwave

HTML全文

图 1 脉冲源电路结构图

Figure 1. Schematic of the pulsed power system

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图 2 重复频率充放电系统控制界面

Figure 2. Control interface of repetitive frequency fracturing system

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图 3 三电极气体放电开关结构示意图

Figure 3. Schematic diagram of three-electrode gas switch

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图 4 放电电极意图

Figure 4. Discharge electrode

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图 5 大水泥岩样结构示意图与实物

Figure 5. Structural and physical drawing

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图 6 加入绝缘套管的放电电极

Figure 6. Discharge electrode with insulating sleeve

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图 7 压力分布图

Figure 7. Pressure distribution diagram

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图 8 套管电极压裂产生的微裂缝

Figure 8. Micro cracks

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图 9 多次重复压裂后裂缝

Figure 9. Fractures after repeated fracturing

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参考文献(11)

[1]	石崇兵, 李传乐. 高能气体压裂技术的发展趋势[J]. 西安石油学院学报(自然科学版), 2000, 15(5): 17-21. doi: 10.3969/j.issn.1673-064X.2000.05.006 Shi Chongbing, Li Chuanle. Development tendency of high energy gas fracturing technique. Journal of Xi'an Petroleum Institute (Natural Science Edition), 2000, 15(5): 17-21 doi: 10.3969/j.issn.1673-064X.2000.05.006
[2]	付荣耀, 孙鹞鸿, 樊爱龙, 等. 高压电脉冲在页岩气开采中的压裂实验研究[J]. 强激光与粒子束, 2016, 28: 079001. doi: 10.11884/HPLPB201628.079001 Fu Rongyao, Sun Yaohong, Fan Ailong, et al. The research of rock fracturing based on high voltage pulse in shale gas. High Power Laser and Particle Beams, 2016, 28: 079001 doi: 10.11884/HPLPB201628.079001
[3]	周健, 陈勉, 金衍, 等. 裂缝性储层水力裂缝扩展机理试验研究[J]. 石油学报, 2007, 28(5): 109-113. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB200705021.htm Zhou Jian, Chen Mian, Jin Yan, et al. Experimental study on propagation mechanism of hydraulic fracture in naturally fractured reservoir. Acta Petrolei Sinica, 2007, 28(5): 109-113 https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB200705021.htm
[4]	周健, 蒋廷学, 张保平, 等. 高能电弧脉冲压裂技术初探[J]. 石油钻探技术, 2014, 42(3): 76-79. https://www.cnki.com.cn/Article/CJFDTOTAL-SYZT201403019.htm Zhou Jian, Jiang Tingxue, Zhang Baoping, et al. Preliminary study on high energy pulsed arc fracturing. Petroleum Drilling Techniques, 2014, 42(3): 76-79 https://www.cnki.com.cn/Article/CJFDTOTAL-SYZT201403019.htm
[5]	付荣耀, 周健, 孙鹞鸿, 等. 无围压下高电压脉冲放电在岩石压裂中的应用[J]. 高电压技术, 2015, 41(12): 4055-4059. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201512026.htm Fu Rongyao, Zhou Jian, Sun Yaohong, et al. The application research of high voltage pulse discharge in the rock fracturing without confining pressure. High Voltage Engineering, 2015, 41(12): 4055-4059 https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201512026.htm
[6]	Fu Rongyao, Sun Yaohong, Fan Ailong, et al. The research of high voltage power supply with a high-energy arc fracturing device[C]//Proc of IEEE Pulsed Power Conference. 2015: 1-4.
[7]	尚雷, 王相纂, 裴元吉, 等. 新型软开关高压脉冲电容恒流充电技术分析[J]. 强激光与粒子束, 2001, 13(2): 241-244. http://www.hplpb.com.cn/article/id/1562 Shang Lei, Wang Xiangqi, Pei Yuanji, et al. Study of new type, soft-switching capacitor charging techniques. High Power Laser and Particle Beams, 2001, 13(2): 241-244 http://www.hplpb.com.cn/article/id/1562
[8]	Biebach J, Ehrhart P, Muller A, et al. Compact modular power supplies for superconduting inductive storage and for capacitor charging[J]. IEEE Trans on Magnetics, 2001, 37(1): 353-357.
[9]	Pollard B C, Nelms R M. Using the series-parallel resonant converter in capacitor charging applications[C]//IEEE Applied Power Electronics Conference and Exposition. 1992: 245-252.
[10]	苏建仓, 王利民, 丁永忠, 等. 串联谐振充电电源分析与设计[J]. 强激光与粒子束, 2004, 16(12): 1611-1614. http://www.hplpb.com.cn/article/id/547 Su Jiancang, Wang Limin, Ding Yongzhong, et al. Analysis and design of series resonant charging power supply. High Power Laser and Particle Beams, 2004, 16(12): 1611-1614 http://www.hplpb.com.cn/article/id/547
[11]	高迎慧, 孙鹞鸿, 严萍, 等. 40 kW高功率密度数字化控制充电电源[J]. 强激光与粒子束, 2009, 21(8): 1259-1262. http://www.hplpb.com.cn/article/id/4154 Gao Yinghui, Sun Yaohong, Yan Ping, et al. 40 kW digital control capacitor charging power supply. High Power Laser and Particle Beams, 2009, 21(8): 1259-1262 http://www.hplpb.com.cn/article/id/4154