Diffraction wave separating method based on shortcut edging sparse Radon transformation

A separation method and diffraction wave technology, which is applied in the field of diffraction wave separation based on the short-track flanged sparse Radon transform, can solve the problems affecting the separation effect of the diffractive wave, reducing the resolution of the Radon transform, and reducing the effect of the short-track diffracted wave , to achieve the effect of reducing the edge effect of the shortcut, improving the calculation efficiency, and improving the degree of separability

Active Publication Date: 2015-09-23
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

Resolution and efficiency are two main factors limiting the application of Radon transform, which will greatly affect the effect of diffraction wave separation based on Radon transform
At the same time, in the Radon transform, the edge effect of the short path will greatly reduce the resolution of the Ra

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  • Diffraction wave separating method based on shortcut edging sparse Radon transformation
  • Diffraction wave separating method based on shortcut edging sparse Radon transformation
  • Diffraction wave separating method based on shortcut edging sparse Radon transformation

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[0027] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] The present invention provides a diffracted wave separation method based on the sparse Radon transform of the short-track flanger. The sparse Radon transform can greatly improve the calculation efficiency while obtaining the high-resolution model solution; at the same time, the short-track flanger technology can effectively reduce the Radon transform. The edge effect of the near track improves the separability of the reflected wave and the diffracted wave in the Radon domain, and effectively separates the reflected wave and the diffracted wave.

[0029] Such as figure 1 As shown, a diffraction wave separation method based on the short-track flanged sparse Radon transform uses the high-efficiency sparse Radon transform to separate the wave ...

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Abstract

The invention provides a diffraction wave separating method based on shortcut edging sparse Radon transformation. Waves are separation from fields in a pre-stack gather with diffraction waves by utilizing high-efficiency sparse Radon transformation, and separated reflection waves and diffraction waves are obtained. Sparse Radon transformation obtains high-resolution model solution and can greatly improve the calculation efficiency; and at the same time, shortcut edging technology can effectively reduce the shortcut edging effect of Radon transformation, thereby improving the separating degree of the reflection waves and the diffraction waves in the Radon domain, and effectively carrying out wave and field separation on the reflection waves and the diffraction waves.

Description

technical field [0001] The invention relates to the technical field of seismic signal processing in seismic exploration, in particular to a diffraction wave separation method based on short-track flanged sparse Radon transform. Background technique [0002] In seismic exploration, due to the complexity of the underground structure, as well as the limitations of the acquisition conditions and the acquisition environment, in addition to the effective reflection waves, there will be many other types of seismic waves in the actually collected seismic data, such as ground roll, multiple waves, diffracted waves, etc. On the one hand, since conventional seismic data processing is based on reflected waves, the existence of these seismic waves will have a great impact on the identification of effective reflected waves and subsequent processing; Therefore, it can be used as a supplement to effective reflected waves. For example, diffracted waves in seismic records often reflect the i...

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Application Information

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IPC IPC(8): G01V1/28
Inventor 周家雄赫建伟陈殿远刘兵王宇任婷马光克邓勇隋波胡林邓盾
Owner CHINA NAT OFFSHORE OIL CORP
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