Quantitative analysis method for overall balance of three dimensional seismic observation system

Abstract

The invention and provides a quantitative analysis method for overall balance of the three dimensional seismic observation system, which aims at judging the sampling balance of a three dimensional seismic observation system and comprises the step of calculating the entropy of the displacement of a geophone point to obtain the balance of a binning, thus obtaining the overall balance of the three dimensional seismic observation system. According to the quantitative analysis method for the overall balance of the three dimensional seismic observation system, the balance of the three dimensional seismic observation system can be scientifically analyzed, and a foundation for the rationality of data acquisition of the three dimensional seismic observation system is laid.

Description

technical field [0001] The invention belongs to the technical field of petroleum geological exploration, and relates to an analysis method for a design scheme of a seismic observation system. Background technique [0002] Since the 1980s, 3D seismic exploration has gradually become the main tool for oil and gas exploration. [0003] The main process of 3D seismic exploration includes: [0004] First, data collection. [0005] Data collection refers to the following work at the exploration site (generally in the field environment): surveying, drilling shallow wells to bury explosives (when using explosives as a seismic source), burying geophones, and arranging cables to instrument vehicles. The task of the survey is to determine the survey line and the positions of the explosion point and the receiving point, and finally form such a pattern on the ground. figure 1 In the arrangement shown, multiple geophones (called check point 1) are set on the survey line, and the explos...

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Problems solved by technology

[0012] In the quantitative analysis method provided by Chinese patent 200610114254.1, the balance of offset and azimuth angle distribution in the four quadrants is considered, and the properties of the surface elements are not analyzed from a finer grid scale, and at the same time, all the properties of each surface element are not comprehensively considered. Attribute factors (including coverage times, offset, azimuth, etc.) give the overall balance value of the surface element (need to be judged according to five parameters), so the judgment result will be uncertain in the application process

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