Cross-well sparker source emission probe

Abstract

The invention relates to a cross-well sparker source emission probe, which mainly comprises an alternating current power supply, a boosting device, an energy storage device, a discharging device and an emission probe. The cross-well sparker source emission probe is characterized in that the emission probe is divided into a head part, a middle part and a tail part, wherein the head part comprises energy emission windows; the middle part comprises an emission electrode and a triggering optical fiber; the tail part comprises a protective shell, an emission cable and an optical fiber. The cross-well sparker source emission probe is unique in structure; the optical fibers are introduced, and conventional acoustic triggering is replaced by optical triggering, so that zero triggering time delay is ensured; the emission direction and the emission frequency are changed by changing the thicknesses of insulating layers of positive and negative electrodes and the positions and sizes of the energy emission windows, tungsten copper is adopted for the emission electrode, and brass and stainless steel are adopted for the shell, so that the cross-well sparker source emission probe is high in electrical conductivity, resistant to high temperature, abrasion and corrosion and long in repeated emission service life.

Description

technical field [0001] The invention relates to a transmitting probe of an electric spark seismic source between wells (including rivers, reservoirs, lakes, etc.), which belongs to engineering geophysics detection equipment, and is a device that uses high-voltage pulse discharge to generate seismic waves. EDM source equipment is widely used in shallow geophysical exploration fields such as foundation pile detection, elastic wave logging, VSP logging, oil exploration, coal seam exploration, geological survey, seismic structure survey, etc. Background technique [0002] As we all know, seismic exploration sources mainly include explosive sources, vibrators, air gun sources and electric spark sources. The explosive source is a traditional source. Its disadvantage is that it is necessary to drill a blasthole with a depth of 10-20 meters to fill the explosives in the field. It is more difficult to apply and use in the border areas, etc., and the explosives have a certain destruc...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the traditional interwell electric spark emission probe, such as unstable delay time of the synchronous trigger signal, fixed and unadjustable emission frequency, and short repeated emission life of the probe, and provide a brand new The designed electric spark probe has a special thread structure on the top, middle and bottom of the probe, and the number of repeated firings is greatly increased

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