A Design Method for High Efficiency Seismic Data Acquisition and Observation System

Abstract

The invention relates to a design method for an efficient seismic data acquisition and observation system, including: 1) designing a conventional seismic acquisition and observation system based on Nyquist; 2) segmenting the space to be sampled along the sampling direction to determine two The segment length of the end and the middle section, and Nyquist sampling is performed at both ends, and the jitter random sampling is performed in the middle section; 3) The jitter random sampling design is carried out for the middle section, and the jitter random sampling parameters are determined. According to the determined jitter random sampling parameters Forward simulation collects data efficiently and conducts regular reconstruction; 4) Perform error comparison, if the error requirements are met, then output an efficient collection observation system, otherwise enter step 5); 5) Randomly sample the jitter parameters using the preset step Update, and then repeat steps 3) to 4) until an efficient acquisition and observation system that meets the error requirements is obtained. The invention can be widely used in the field of high-efficiency acquisition of seismic data.

Description

technical field [0001] The present invention relates to the technical field of seismic data acquisition, in particular to a method for designing an observation system for high-efficiency acquisition of seismic data, which realizes seismic data collection by random sampling with jitter at regular edges, that is, random sampling with jitter in the middle and Nyquist sampling at both ends. Efficient acquisition, thereby reducing the cost of seismic data field acquisition. Background technique [0002] Seismic exploration is the most important means of oil and gas exploration, and it costs a lot of money. Its main expenditure is the field acquisition of seismic data, which accounts for more than 70% of the seismic exploration expenditure. The complexity and refinement of exploration have led to a sharp increase in the collected data, and the cost of collection and processing has continued to rise. [0003] Traditional seismic data acquisition is based on the classic Nyquist sa...

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Problems solved by technology

[0005] In view of the above problems, the object of the present invention is to provide a design method for high-efficiency seismic data acquisition and observation system to solve the problem that both Gaussian random sampling and Bernoulli random sampling are difficult to control the maximum and minimum sampling intervals, and it is easy to generate larger or smaller intervals. , and edge effects appear, which is not conducive to the problem of signal reconstruction

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