A method and device for acquiring co-azimuth seismic data

Abstract

The present application discloses a method for acquiring seismic data with a common azimuth and its device. A method for acquiring seismic data with a common azimuth includes: establishing a coordinate system for mapping seismic data; establishing in the coordinate system Statistical points arranged based on predetermined rules; the statistical point is used to store seismic trace data mapped on and near the statistical point; determine the azimuth to be extracted and establish the statistical point within the azimuth to be extracted index; map the seismic data to the coordinate system, and store the seismic trace data mapped on the statistical point and near the statistical point at the statistical point; traverse the index to obtain the statistical data located in the azimuth to be extracted The seismic trace data stored at the point. The method and device for acquiring co-azimuth seismic data provided by the present application can rapidly extract co-azimuth seismic data when processing seismic data for wide-azimuth exploration.

Description

technical field [0001] The present application relates to the field of seismic exploration, in particular to a method and device for acquiring seismic data with a common azimuth. Background technique [0002] The finer description of subsurface structure and lithology requires better illumination and higher frequency of uniform multiple coverage, so wide-azimuth exploration is becoming more and more popular. In wide-azimuth exploration, the receiving channels are increased several times, especially the arrangement of receiving lines in the shot is greatly increased to obtain finer bin coverage and a more uniform azimuth distribution in bins, in order to improve the seismic data processing effect. However, the wide azimuth angle highlights the large influence of different azimuthal anisotropies, which must be fully accounted for in the treatment. Therefore, when processing wide-azimuth seismic data, many existing processing steps require azimuth-based processing. Adjacent se...

AI Technical Summary

Problems solved by technology

However, during wide-azimuth exploration, the total number of seismic data traces increases sharply, and sometimes after increasing to the current scale of 100 million traces, the traditional method uses trigonometric functions to calculate the azimuth angle in step S1. The time expenditure increases sharply

If the time expenditure of step 2 and step 3 is combined, the time for sorting and extracting seismic data with a common azimuth can be as long as several hours or days, which takes up a lot of seismic data processing time, affects the processing efficiency of seismic data, and is extremely unfavorable Efficient processing at the seismic acquisition site

Images