A geological prospecting detection method, device and storage medium

Abstract

The embodiment of the present invention discloses a geological prospecting detection method, device and storage medium, wherein the method is applied to four-component acquisition equipment; the four-component acquisition equipment includes a high-frequency detector for collecting high-frequency component data and a low-frequency detector for collecting low-frequency three-component data; the method includes: obtaining high-frequency component data by the high-frequency detector, and obtaining low-frequency three-component data by the low-frequency detector; the high-frequency component data and The low-frequency three-component data is obtained based on an excited artificial seismic source; the low-frequency three-component data includes two horizontal component data and one vertical component data; the surface velocity is determined through the high-frequency component data; based on the surface velocity and the A velocity model is obtained from the low-frequency three-component data, and the velocity model characterizes the corresponding relationship between the depth and the velocity of the formation; the formation velocity profile of the test area is determined based on the velocity model.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to a geological exploration detection method, device and storage medium. Background technique [0002] At present, the inversion method of seismology using actual observation record data is still mostly used in the study of deep structures, such as the single-point seismic noise imaging method, which usually uses three-component low-frequency geophones to collect data, and then uses the collected data to obtain the measured level The vertical spectral ratio curve (Horizontal-to-Vertical Spectral Ratio, HVSR), and then calculate the formation velocity, but in the calculation process, it relies heavily on the shear wave velocity of the underground surface. However, when using the HVSR single-point noise imaging method, it is difficult to determine the accurate surface shear wave velocity, which is usually a given empirical value, which will lead to relatively large calcula...

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Problems solved by technology

[0002] At present, the inversion method of seismology using actual observation record data is still mostly used in the study of deep structures, such as the single-point seismic noise imaging method, which usually uses three-component low-frequency geophones to collect data, and then uses the collected data to obtain the measured level and the vertical spectral ratio curve (Horizontal-to-Vertical Spectral Ratio, HVSR), and then calculate the formation velocity, but in the calculation process, it relies heavily on the shear wave velocity of the underground surface

When using the HVSR single-point noise imaging method, it is difficult to determine the accurate surface shear wave velocity, which is usually a given empirical value, which will lead to relatively large calculation deviations and unstable calculation results

However, there is currently no effective solution to this problem

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