Target-oriented seismic acquisition method and device, medium and equipment

Abstract

The invention relates to a target-oriented seismic acquisition method, device, medium and equipment, and the method comprises the following steps: giving an initial speed model and three-dimensional seismic observation system parameters for an underground target position; carrying out wave field continuation and focusing analysis on the three-dimensional seismological observation system, and calculating ground seismic energy distribution of the underground target area; carrying out normalization processing on the ground seismic energy distribution, and then carrying out grade zoning to obtain a first-grade energy zone and a second-grade energy zone; the number of shot points is increased in a first-level energy area, target-oriented collection is achieved, and a target-oriented non-uniform laying collection data imaging effect is obtained; and comparing the conventional acquired data imaging result with the target-oriented non-uniform laying acquired data imaging effect. The method provided by the invention realizes automatic feedback adjustment of excitation and receiving positions and parameters thereof.

Description

technical field [0001] The invention relates to a target-oriented seismic acquisition method, device, medium and equipment, and belongs to the field of optimal design of a three-dimensional observation system for petroleum seismic exploration. Background technique [0002] 3D seismic exploration is the main means of oil and gas exploration. The data collected by seismic must be processed, imaged, and inverted to obtain the underground structural characteristics and lithological parameters. Therefore, the data quality of seismic acquisition is crucial to the clarity of identifying subsurface objects. [0003] Traditional seismic acquisition is to evenly lay shot points and receiver points on the ground. The underlying theory assumes that the underground stratum is a horizontal medium, and the seismic waves are uniformly illuminated, but the actual stratum cannot be horizontal. For most gentle formations, the seismic waves excited by ground shots can be reflected at a small a...

AI Technical Summary

Problems solved by technology

For most gentle formations, the seismic waves excited by ground shots can be reflected at a small angle and received by ground geophones; while high-steep faults produce high-angle reflections, the signal cannot be received by ground geophones, and steep-dip angle strata and fractures cannot be seen clearly

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