高能电弧脉冲压裂技术初探

为了掌握高能电弧脉冲压裂技术的基本原理，研究影响其压裂效果的关键参数，进行了高能电弧脉冲压裂理论分析和室内试验。理论分析可知，高能电弧脉冲压裂所产生的冲击波压力与放电电压、脉冲能量和放电时间有关。室内试验显示，电弧压力脉冲能在混凝土试样中的模拟井筒的井壁上造成裂缝，裂缝呈径向分布，在近井筒区域无明显弯曲。试验结果表明，在高能电弧脉冲压裂中，随着放电电压和单次能量的增高，产生的脉冲压力峰值会增大，造成的电弧脉冲裂缝的缝高和缝长也会增大。研究结果为进一步进行高能电弧脉冲压裂提供了试验数据。 

Preliminary Study on High-Energy Pulsed Arc Fracturing

In order to get a better understanding of the principle of high-energy pulsed arc fracturing,determine key factors affecting its fracturing results,theoretical analysis and lab experiment were conducted for high-energy pulsed arc fracturing.The theoretical analysis indicates that the pulse wave pressure produced in high-energy pulsed arc fracturing depends on the discharging voltage,pulse energy and discharging time.Lab experiment shows that obvious fractures around the wellbore in concrete samples can be created by using different discharging voltages,the fractures are radial with no obvious bending in near wellbore area.The testing results show that the pulse pressure peak will increase with the increase of discharging voltage and pulse energy,and the fracture height and length will also increase.The research results provide testing data for further high-energy pulsed arc fracturing.