Earthquake data collection method and system

Abstract

The invention discloses an earthquake data collection method. The earthquake data collection method comprises steps of creating a compression collection observation system, wherein detection wave points of the compression collection observation system are uniformly distributed and shot points of the detection wave points are sparsely arranged and distributed nonuniformly; performing reconstruction processing on earthquake sampling data in order to obtain earthquake data of the shot points which are missed so as to obtain complete earthquake data. The invention also provides an earthquake data collection system. Compared with the prior art, the earthquake data collection method and system greatly reduce the quantity of small shot points on the basis of not reducing data accuracy. The earthquake data collection method and system are simple in a process and easy to implement, can effectively improve collection efficiency of the earthquake data and can reduce a sampling cost of the earthquake data and can also provide a means of obtaining a complete rule earthquake material to an area where a regular shot record cannot be obtained due to objective factors.

Description

technical field [0001] The invention relates to the field of seismic exploration, in particular to a seismic data acquisition method and system. Background technique [0002] In the process of seismic exploration, the seismic data acquisition observation system is often used to acquire seismic data. The artificial seismic wave is sent at the shot point position of the seismic data acquisition observation system, and the corresponding formation data are obtained by receiving and processing the return seismic wave after the artificial seismic wave is transmitted and reflected by the formation. In order to realize the above functions, the seismic data acquisition and observation system includes shot points for generating artificial seismic waves and receiver points for receiving return seismic waves. [0003] Generally, in theory, the more the number of shot points, the higher the overlapping coverage of the exploration area, and the higher the signal-to-noise ratio and latera...

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Problems solved by technology

[0005] However, the seismic data acquisition and observation system designed based on the above method still contains a relatively large number of shot points, and the cost of setting up the entire system is still relatively high

At the same time, limited by the natural acquisition conditions in the field (such as terrain, rivers, roads, villages, buildings or turnings of sea towlines, etc.), in some cases the seismic data acquisition observation system cannot completely acquire all seismic shot records

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