Combination type water-filling energy accumulation epicentre device for seismic exploration

Abstract

The invention discloses a combination type water-filling energy accumulation e epicentre device for seismic exploration, comprising a epicenter unit; the epicenter unit comprises a column-shaped housing, an explosive chamber and an energy accumulation cavity; two ends of the column-shaped housing are provided with threads; one end of the column-shaped housing is connected to a filling chamber filled with the water; the other end of the column-shaped housing is connected to the energy accumulation cavity; an explosive chamber is arranged between the energy accumulation cavity and the filling chamber; the center of the filling chamber is provided with a through hole; and the through hole is internally provided with a denoting cord connected to a detonator which is connected to the explosive of the explosive chamber. The invention is a combination type water filling energy accumulation epicenter device for detecting earthquake, which can independently use one epicenter unit and can also use a plurality of epicentre units to construct a multi-stage energy accumulation structure. The invention can perform multi-stage assembling on site and configures the detonation structure, which effectively improves the down-transmission energy and resolution ratio, reduces the extra high frequency seismic wave energy and the explosive hazard, guarantees the accuracy explosion rate of the epicentre, and can be adapted to the earthquake detection in the complicated terrain.

Description

technical field [0001] The invention relates to a combined water-filled energy-gathering seismic source device for seismic exploration, which belongs to the field of blasting equipment for geophysical exploration. Background technique [0002] In geophysical exploration, chemical detonation source seismic exploration is one of the most widely used and most effective important technologies in oil and gas exploration methods at home and abroad. With years of geological exploration, the field to be explored becomes more and more complex, the resolution of exploration is required to be higher and higher, and the impact on the surrounding environment must be controlled. When the original seismic source device is used for seismic exploration in complex areas, the proper excitation effect cannot be guaranteed. Although the dose is large, the useful work is small, the interference is serious, and the signal-to-noise ratio is low, which affects the geological exploration effect. Ther...

AI Technical Summary

Problems solved by technology

A single increase in the charge of the source bomb can increase the energy of seismic exploration, but the main frequency of the generated seismic wave decreases, and the harmful effect of the explosion increases, which reduces the resolution of seismic exploration

Compared with the vertical charge seismic source with the same charge, the seismic wave energy generated by the axially spaced charge seismic source is larger, the main frequency is higher, and the exploration effect is better. The charge also has the risk of refusal to explode, causing potential safety hazards

[0004] The patent "A Seismic Prospect Explosive Blasting Vibration Source Device" (Patent No. 2012204892076) discloses a blasting source device, which concentrates the explosion seismic wave frequency suitable for seismic exploration by filling the source bomb with water medium, effectively improving the resolution of seismic exploration , but the device is a closed and complete seismic source, and the energy of the source is limited by the size of the device. For seismic exploration that requires a large amount of charge, the device needs a large length to meet the energy demand of the exploration, which is very important for the processing, storage, and The transportation has increased the difficulty, and it has not been able to solve the problem of rejecting explosion of too long vertical charges

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