Underground high voltage capacitor charging and discharging power source

Abstract

The invention discloses an underground high voltage capacitor charging and discharging power source. The power source includes a frequency conversion device, a cable winch, a cable, a high temperatureresistant transformer, a boost rectifier circuit, an energy storage capacitor and a discharge circuit. During operation, the frequency conversion device converts a power frequency voltage into a sinusoidal voltage with a certain amplitude and frequency, the underground length of the cable is controlled by the cable winch, the voltage on the ground surface is transmitted underground, the energy storage capacitor is subjected to constant voltage charging through the high temperature resistant transformer and the boost rectifier circuit, when the capacitor is charged to a desired voltage, the capacitor discharges the load through the discharge circuit. The power source is advantaged in that the size is small, the power source is high temperature resistant, the power source can adapt to the small working space under the well and the high temperature working environment, the charging speed is fast, repeat frequency charging can be performed, the discharge circuit adopts a high-voltage pulse discharge mode and has advantages of no secondary pollution, short occupation time and easy operation.

Description

technical field [0001] The invention relates to an underground high-voltage capacitor charging and discharging power supply. Background technique [0002] With the continuous deepening of oil field exploitation, the formation pressure will drop, which will reduce the permeability of the oil layer. In addition, the deposition of insoluble salts in the oil well will block the oil seepage channel, resulting in a decline in oil well production, especially for low permeability oil fields. In other words, the decline in oil production is more serious, and may even cause oil wells to shut down. [0003] Hydroelectric pulse stimulation technology is a new plug-removing stimulation method that uses shock waves generated by high-voltage pulse discharge to act on oil layers. It has the advantages of no secondary pollution, short well-occupancy time, and easy operation. It has been increasingly popular in oil fields at home and abroad. Wide range of applications. The hydraulic pulse s...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a high-voltage capacitor charging and discharging power supply with small volume, high temperature resistance and high reliability, aiming at solving the problem of the existing transformer in the narrow high-temperature space in the underground. Difficulty in normal installation, work and low reliability

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