Shock wave generating device of oil-gas wells and oil-gas well yield increasing method adopting shock waves

Abstract

The invention provides a shock wave generating device of oil-gas wells and an oil-gas well yield increasing method adopting shock waves, and belongs to the field of petrochemical engineering and electric engineering. A constant flow source technology is adopted, current stability can be kept in the charging process, a charging resistor is not needed in a downhole device, the structure is simplified, reliability and compactness are improved, and charging heat emitting and extra losses are eradicated; the shock wave generating device can be suitable for the depths of most oil-gas wells, the overall reliability of the device is improved, charging and discharging loops are short, and the energy utilization rate is high; the low voltage and a large capacitance value are adopted, the waveform ofthe discharge pulse approximates to the low frequency on a frequency spectrum, and thus the shock waves are propagated advantageously in the far range; two opposite spherical surfaces are adopted asa discharge switch, when the voltage reaches the puncture voltage of the shock wave generating device, the shock wave generating device can be connected, during working, other control or triggering signals do not need to be provided, the structure of the device is simplified, and the reliability of the device is improved; and the structure is simple, the downhole environment is prevented from being polluted, and quick and repeated puncture discharging can be achieved.

Description

technical field [0001] The invention relates to the fields of petrochemical and electrical engineering, in particular to a shock wave generating device for oil and gas wells and a production stimulation method for oil and gas wells using shock waves. Background technique [0002] With the increase of the production time of oil and gas wells, the oil outlet holes of many oil and gas wells are blocked due to the accumulation of impurities and long-term injection of polymers, resulting in blockage of oil seepage channels, increased bottom-hole pressure, and a decline in the effect of injecting polymers, resulting in a decrease in the production of oil and gas wells. Even partially discontinued. [0003] The existing plugging removal methods include physical plugging removal, chemical plugging removal and biological plugging removal, etc.; the construction steps of the physical plugging removal method are relatively cumbersome, and the chemical plugging removal method has high c...

AI Technical Summary

Problems solved by technology

Judging from the various technical solutions that have been announced so far, the main problem is that some devices are too large in size, and most of the modules cannot go down the well, resulting in too long pulse discharge circuits, large energy loss, and low efficiency; Large, poor reliability in downhole complex environments; relatively simple in design, can be used for shallow well operations, but far from meeting the requirements of most well depths

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