Interpolation and denoising method and system for seismic data

A technology of seismic data and seismic data volume, applied in the field of geophysical exploration, can solve the problems of high signal-to-noise ratio of seismic data, lack of seismic data, affecting the effect of denoising processing, etc., to achieve high signal-to-noise ratio and strong noise immunity. Effect

Active Publication Date: 2015-04-22
CHINA UNIV OF PETROLEUM (BEIJING) +1
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Problems solved by technology

[0003] In the existing technology, many processing methods generally perform seismic data interpolation and denoising processing separately, but the premise of realizing seismic data interpolation is that the signal-to-noise ratio of seismic data is high, and the lack of seismic data affects the effect of denoising processing. there is a contradiction
Therefore, the interpolation of low signal-to-noise ratio seismic data is usually weighted, and the processing effect is not ideal

Method used

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  • Interpolation and denoising method and system for seismic data
  • Interpolation and denoising method and system for seismic data
  • Interpolation and denoising method and system for seismic data

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] The invention relates to a method for processing seismic data in the field of oil and gas field exploration, in particular to an integrated processing method for seismic data interpolation and denoising, which finally obtains a regularly reconstructed seismic data body with a high signal-to-noise ratio.

[0055] figure 1 A flow chart of an interpolation and denoising method for seismic data provided by an embodiment of the present invention, consisting ...

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Abstract

The invention provides an interpolation and denoising method and system for seismic data. The method comprises the steps that a preset sampling matrix is acquired; observation data are collected according to the sampling matrix; an objective functional is constructed; according to the observation data and the objective functional, seismic data volume, after interpolation and denoising are performed, corresponding to the observation data is determined. By studying an interpolation and denoising integration scheme of low-signal-to-noise-ratio seismic data, denoising is performed through a threshold value after each time of interpolation, and finally the complete and regular seismic data volume high in signal to noise ratio is obtained. Accordingly, the interpolation and denoising method and system lay a data foundation for multiple processes such as multiple attenuation based on wave equation surface correlation, migration imaging and wave equation inversion.

Description

technical field [0001] The present invention relates to the technical field of geophysical exploration, in particular to the seismic data processing technology in the field of oil and gas field exploration, and specifically to an interpolation and denoising method and system for seismic data. Background technique [0002] In the field of oil and gas field exploration, due to the limitation of acquisition cost and the influence of no-production areas, obstacles, and plume drift of ocean streamers, the acquired seismic data is irregular in spatial direction. Secondly, the elimination of waste guns and roads during the processing is also one of the reasons for the irregularity of the data. In the subsequent process of seismic data processing, surface-correlated multiple suppression, migration imaging, and wave equation inversion based on wave equations require seismic data volumes based on complete rules and high signal-to-noise ratios. Therefore, seismic data interpolation is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 李景叶王本锋陈小宏王守东刘国昌马继涛
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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