Slip-sweep harmonic suppression method and device

A technology of sliding scanning and harmonic suppression, which is applied in the field of oil 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: 2015-11-25
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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  • Slip-sweep harmonic suppression method and device
  • Slip-sweep harmonic suppression method and device
  • Slip-sweep 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 protection scope 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 invention relates to the technical field of oil exploration, and particularly relates to a slip-sweep harmonic suppression method and device. The method comprises the following steps: acquiring slip-sweep relevant post data, and picking up the first arrival time of the relevant post data; performing complementary ensemble empirical mode decomposition (CEEMD) on the relevant post data to obtain a group of intrinsic mode function (IMF) components; analyzing the distribution condition of harmonic in the IMF components, and determining the IMF components containing the harmonic and the IMF components not containing the harmonic; performing harmonic attenuation on the IMF components containing the harmonic from the first arrival time; and reconstructing the IMF components after harmonic attenuation and the IMF components not containing the harmonic to obtain harmonic-removed relevant post data. The method and the device effectively suppress the slip-sweep harmonic without focal force signals, and improve 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 Applications(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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