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A sliding scanning harmonic suppression method and device

A sliding scanning and harmonic suppression technology, applied in the field of petroleum exploration, can solve the problems of reducing the quality of seismic data, and achieve the effect of improving the signal-to-noise ratio

Active Publication Date: 2018-02-02
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

In this technology, harmonic interference exists objectively, and generally manifests as the harmonic distortion in the latter shot has an impact on the previous shot, thereby reducing the quality of seismic data, so special suppression technology is required during processing

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  • A sliding scanning harmonic suppression method and device
  • A sliding scanning harmonic suppression method and device
  • A sliding scanning harmonic suppression method and device

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Embodiment Construction

[0026] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0027] The specific implementation manners of the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0028] refer to figure 1 As shown, the sliding scanning harmonic suppression method of the embodiment of the present application includes the following steps: ...

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Abstract

The present invention relates to the technical field of petroleum exploration, and in particular to a sliding scanning harmonic suppression method and device. The method includes the following steps: acquiring relevant backtracking data of sliding scanning, and picking up the first arrival time of the related backtracking data; Complementary ensemble average empirical mode decomposition CEEMD is carried out on the relevant back channel data to obtain a set of eigenmode function IMF components; analyze the distribution of harmonics in the IMF components, and determine the IMF components containing harmonics and the IMF components without harmonics The IMF component of the wave; the IMF component containing the harmonic is subjected to harmonic attenuation processing from the first arrival time; the IMF component after the harmonic attenuation processing and the IMF component not containing the harmonic are reconstructed to obtain Correlated back channel data after harmonic removal. The invention realizes the effective suppression of the sliding scanning harmonics without the source force signal, and improves the signal-to-noise ratio of seismic data.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to a sliding scanning harmonic suppression method and device. Background technique [0002] At present, in petroleum seismic exploration, sliding scanning technology is one of the mature and commonly used technologies in the high-efficiency acquisition technology of vibroseis in the world. In this technology, harmonic interference exists objectively, and generally manifests as the harmonic distortion in the latter shot affects the previous shot, thereby reducing the quality of seismic data, so special suppression technology is required during processing. [0003] However, the existing vibroseis harmonic suppression methods (such as model method, filtering method, etc.) all need the source force signal to calculate a filter factor to estimate the harmonic component, and then subtract the harmonic component from the original record to achieve the harmonic purpose of att...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/36
Inventor 门哲王井富马涛雷云山李红远
Owner BC P INC CHINA NAT PETROLEUM CORP
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