脉冲大电流放电引爆含能材料产生冲击波的储层改造

周海滨; 刘巧珏; 赵有志; 张永民; 丁卫东

doi:doi:10.11884/hplpb201628.049001

强激光与粒子束, 2016, 28 (4): 049001, 网络出版: 2016-04-01

脉冲大电流放电引爆含能材料产生冲击波的储层改造

Transformation of oil-and-gas reservoir with shock waves by high current pulsed discharge ignited energetic materials explosion

论文大纲

周海滨 ^1,*刘巧珏 ¹赵有志 ²张永民 ¹丁卫东 ¹

作者单位

¹ 西安交通大学电力设备电气绝缘国家重点实验室, 西安 710049

² 西安贯通能源科技有限公司, 西安 710068

摘要

介绍了复合电热化学法产生冲击波的机理和冲击波改善储层物性的机制; 给出了脉冲大电流引爆含能材料弹丸的结构和典型的放电参数,开展了冲击波致裂储层的实验研究; 检测了样品在冲击作用下的动态应变及影响储层解吸附特性的关键参数(包括孔隙度、渗透率、抗拉、抗压强度等),并在实验前后进行了测量和对比。研究表明,电热化学法产生的冲击波可在圆柱形砂岩样品上产生幅值为1000με~1500με的应变量,使砂岩出现了宏观裂缝; 样品平均孔隙度由15.24%增至15.62%,平均渗透率由1.749 09×10-3 μm2增至2.467 08×10-3 μm2; 抗压、抗拉和抗剪强度均下降了约30%。

Abstract

Composite electro-thermal chemical explosion (CETCE) was used to generate strong shock waves (SWs). This paper introduces the mechanism and effects of SWs generated by CETCE on reservoir stimulation and gives the discharge parameters and discharge load structure used to ignite energetic materials (EMs). The SW fracturing effects experiments were carried out. The dynamic strain and desorption related parameters, including porosity, permeability, strengths of extension and compression were measured and compared with those before the shock experiments. The results show that, the SWs generated by CETCE can generate the dynamic strain of 1000με-1500με, and visual cracks appear on and in the samples. The average porosity of sample increases from 15.24% to 15.62%, average permeability increases from 1.749 09×10-3 μm2 to 2.467 08×10-3 μm2, and strengths of extension, compression and shear decrease by about 30% overall.

参考文献

[1] 李维新. 一维不定常流与冲击波[M]. 北京: 国防工业出版社, 2003: 202-203. (Li Weixin. One-dimensional nonstable flow and shock waves. Beijing: National Defence Industry Press, 2003: 202-203)

[2] 汤文辉. 冲击波物理[M]. 北京: 科学出版社, 2011: 152-153. (Tang Wenhui. Shock wave physics. Beijing: Science Press, 2011: 152-153)

[3] 魏明强, 段永刚, 方全堂, 等. 页岩气藏孔渗结构特征和渗流机理研究现状[J]. 油气藏评价与开发, 2011, 1(4): 73-77. (Wei Mingqiang, Duan Yonggang, Fang Quantang, et al. Current research situation of porosity & permeability characteristics and seepage mechanism of shale gas reservoir. Reservoir Evaluation and Development, 2011, 1(4): 73-77)

[4] 孙凤举, 曾正中, 邱毓昌, 等. 一种用于油水井解堵的脉冲大电流源[J]. 高电压技术, 1999, 25(2): 47-49. (Sun Fengju, Zeng Zhengzhong, Qiu Yuchang, et al. Pulse high current power supply used for dredging oil & water wells. High Voltage Engineering, 1999, 25(2): 47-49)

[5] 陆小兵, 王守虎, 隋蕾, 等. 电脉冲解堵增注机理分析及应用[J]. 天然气与石油, 2011, 29(6): 61-62, 79. (Lu Xiaobing, Wang Shouhu, Sui lei, et al. Analysis and application of electronic pulse de-plugging and injection-adding mechanism. Oil and Gas Field Development, 2011, 29(6): 61-62, 79)

[6] 毛志国, 邹晓兵, 王新新, 等. 电爆金属丝产生纳米粉体[J]. 强激光与粒子束, 2010, 22(3): 691-695. (Mao Zhiguo, Zou Xiaobing, Wang Xinxin, et al. Nano-powder production by electrical explosion of wires. High Power Laser and Particle Beams, 2010, 22(3): 691-695)

[7] 龚兴根. 电爆炸断路开关[J]. 强激光与粒子束, 2002, 14(4): 577-582. (Gong Xinggen. Electrical exploding opening switch. High Power Laser and Particle Beams, 2002, 14(4): 577-582)

[8] Grinenko A, Sayapin A, Gurovich V T, et al. Underwater electrical explosion of a Cu wire[J]. Journal of Applied Physics, 2005, 97: 023303.

[9] Grinenko A, Efimov S, Fedotov A, et al. Efficiency of the shock wave generation caused by underwater electrical wire explosion[J]. Journal of Applied Physics, 2006, 100: 113509.

[10] Krasik Y E, Grinenko A, Sayapin A, et al. Underwater electrical wire explosion and its applications[J]. IEEE Trans Plasma Sci, 2008, 36(2): 423-434.

[11] 周庆, 张乔根, 张俊, 等. 铜丝水中电爆炸能量沉积特性[J]. 强激光与粒子束, 2012, 24(3): 505-510. (Zhou Qing, Zhang Qiaogen, Zhang Jun, et al. Characteristics of energy deposition in underwater electrical explosion of copper wire. High Power Laser and Particle Beams, 2012, 24(3): 505-510)

[12] 燕文宇, 张乔根, 赵军平, 等. 不同氩气气压下铝丝电爆炸的二次放电特性[J]. 强激光与粒子束, 2014, 26: 025002. (Yan Wenyu, Zhang Qiaogen, Zhao Junping, et al. Second discharge characteristics of aluminum wire electrical explosion under various argon pressures. High Power Laser and Particle Beams, 2014, 26: 025002)

[13] Liu Q, Ding W, Zhou H, et al. A novel strain measurement system in strong electromagnetic field[J]. IEEE Trans Plasma Sci, 2015, 43(10): 3562-3567.

周海滨, 刘巧珏, 赵有志, 张永民, 丁卫东. 脉冲大电流放电引爆含能材料产生冲击波的储层改造[J]. 强激光与粒子束, 2016, 28(4): 049001. Zhou Haibin, Liu Qiaojue, Zhao Youzhi, Zhang Yongmin, Ding Weidong. Transformation of oil-and-gas reservoir with shock waves by high current pulsed discharge ignited energetic materials explosion[J]. High Power Laser and Particle Beams, 2016, 28(4): 049001.

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