Seismic data denoising method based on peak transformation

A technology of seismic data and peak value, which is applied in the field of oil and gas geophysical exploration, can solve problems including interference noise and impact, and achieve the effect of noise suppression

Active Publication Date: 2018-10-19
BEIJING UNIV OF CHEM TECH
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Problems solved by technology

[0002] With the continuous deepening of oil and gas exploration, the structure and environment of the exploration target area are becoming more and more complex. Due to the influence of observation environment, measurement error, and ground micro-vibration, the seismic wave data collected by the seismic receiver inevitably contain some Interference noise seriously affects the processing and interpretation of seismic data, so as to affect the judgment of the geological structure and oil and gas reservoirs in the target area

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Embodiment Construction

[0016] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings, which cannot be used to limit the protection scope of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and various manners in the embodiments can be combined with each other. The drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

[0017] see figure 1 , the present invention proposes a seismic data denoising method based on peak transformation, including:

[0018] Step 300 decomposes the acquired seismic data by the number of traces.

[0019] Step 301 performs peak transformation processing on the acquired seismic wave data to convert high frequency signals into low frequency signals....

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Abstract

The invention, which belongs to the field of oil and gas geophysical exploration, discloses a seismic data denoising method based on peak transformation. Peak transformation is carried out on seismicdata to obtain a signal after peak transformation; wavelet decomposition is carried out on the data after peak transformation, threshold denoising processing is carried out on an obtain wavelet component, and wavelet reconstruction is carried out on an obtained new wavelet component; and inverse peak transformation is carried out to obtain seismic data after the noise reduction processing. According to the method provided by the invention, the seismic data are processed by combining the peak transformation and wavelet analysis to realize a seismic data noise suppression effect; and the processed signal can meet the processing and interpretation work of deep seismic data.

Description

technical field [0001] The invention belongs to the field of oil and gas geophysical exploration, and in particular relates to a seismic data noise reduction method based on peak transformation. Background technique [0002] With the continuous deepening of oil and gas exploration, the structure and environment of the exploration target area are becoming more and more complex. Due to the influence of observation environment, measurement error, and ground micro-vibration, the seismic wave data collected by the seismic receiver inevitably contain some Interference noise seriously affects the processing and interpretation of seismic data, so as to affect the judgment of the geological structure and oil and gas reservoirs in the target area. Therefore, it is often necessary to perform noise reduction processing on the collected seismic data to make the effective seismic information clearer and facilitate seismic data processing and interpretation. Contents of the invention ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36
CPCG01V1/368G01V2210/324
Inventor 唐刚徐智
Owner BEIJING UNIV OF CHEM TECH
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