A High-Power Sparker and Its Applications

摘要

A 600kJ high-power sparker is presented. Its operating principle and structure are introduced, together with its key technology and its characteristics. The sparker is composed mainly of a high-voltage DC power supply, four banks of the energy storage capacitors, three-electrode spark gap switches, and discharging electrodes. The discharging current each group is about 100kA at 8kV. Also, the technical parameters are given, and its application in vertical seismic profiling (VSP) logging and cross-well seismic exploration are described briefly, the explored depths is expected to be about 4500 m.