电工技术学报  2016, Vol. 31 Issue (24): 71-78    DOI:
放电等离子体及应用专题 |
水中脉冲激波对模拟岩层破碎试验
刘毅, 李志远, 李显东, 林福昌, 潘垣
强电磁工程与新技术国家重点实验室(华中科技大学) 武汉 430074
Experiments on the Fracture of Simulated Stratum by Underwater Pulsed Discharge Shock Waves
Liu Yi, Li Zhiyuan, Li Xiandong, Lin Fuchang, Pan Yuan
State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China
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摘要 采用重复频率液电脉冲激波轰击油气井射孔及附近岩层,可提高油气井的固有渗透率,增加油气产量。本文建立水中大电流脉冲放电激波试验平台,构建电气、激波及光学等监测系统,分析水中脉冲激波与电弧膨胀及空腔运动的对应关系;分析液电脉冲激波能量的转换效率及频谱特性,采用混凝土试样模拟油气井护套及射孔周围岩层。测试了激波强度及放电次数对射孔堵塞物的清理效果,模拟了激波对岩层的造缝效果。试验结果表明,采用重复频率液电脉冲激波轰击射孔堵塞物及作用周围岩层,能够有效解除油气井的堵塞,增加岩层裂缝,提高油气产量。
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刘毅
李志远
李显东
林福昌
潘垣
关键词 油气增产液电效应激波液电等离子体脉冲电弧    
Abstract:Under repetitive dynamic shock waves, the blockage at the oil well perforation can be broken and removed from the bore-hole wall, and the fracture to increase the permeability of the hole-bottom region can be formed. Then the oil production of the well is improved. In this paper, a test platform of the oil well stimulation based on the electrohydraulic shock waves was designed and constructed. The electrical parameters, shock wave intensity, and expansion process of the plasma channel and cavity were observed. The preliminary experiments were carried out on some hollow cylinder concrete specimens. The influence of the injected electrical energy and the applied shock wave shot number on the fracture of the specimen was investigated. The experimental results show that the shock wave can increase the permeability.
Key wordsOil/gas    stimulation,    electrohydraulic    effect,    shock    wave,    liquid    plasma,    pulsed    current    arc   
收稿日期: 2016-06-01      出版日期: 2017-01-03
PACS: TM89  
基金资助:国家自然科学基金资助项目(51507070)
作者简介: 刘 毅 男,1985年生,讲师,研究方向为液电脉冲等离子体及其应用、电力设备故障诊断。E-mail: yiliu@hust.edu.cn(通信作者)李志远 男,1991年生,硕士研究生,研究方向为液电脉冲等离子体及其应用。E-mail: 970111931@qq.com
引用本文:   
刘毅, 李志远, 李显东, 林福昌, 潘垣. 水中脉冲激波对模拟岩层破碎试验[J]. 电工技术学报, 2016, 31(24): 71-78. Liu Yi, Li Zhiyuan, Li Xiandong, Lin Fuchang, Pan Yuan. Experiments on the Fracture of Simulated Stratum by Underwater Pulsed Discharge Shock Waves. Transactions of China Electrotechnical Society, 2016, 31(24): 71-78.
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