Five-dimensional spectral analysis noise suppression method, storage medium and computing equipment for seismic data

A seismic data and noise suppression technology, applied in the field of seismic exploration data processing, to achieve the effect of maintaining high amplitude and high fidelity

Active Publication Date: 2022-07-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the current blank of five-dimensional noise suppression, the present invention provides a seismic data five-dimensional spectral analysis noise suppression method, storage medium and computing equipment

Method used

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  • Five-dimensional spectral analysis noise suppression method, storage medium and computing equipment for seismic data
  • Five-dimensional spectral analysis noise suppression method, storage medium and computing equipment for seismic data
  • Five-dimensional spectral analysis noise suppression method, storage medium and computing equipment for seismic data

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Embodiment 1

[0048] figure 1 It is a flow chart of a noise suppression method for seismic data five-dimensional spectrum analysis according to an embodiment of the present invention. like figure 1 As shown, the method includes:

[0049] Step S1: converting the three-dimensional common shot gathers into pre-stack three-dimensional CDP gathers by using the common depth point grid;

[0050] Step S2: form a rose diagram according to the position distribution density of the center point of the offset coordinates in the pre-stack three-dimensional CDP gather;

[0051] Step S3: splitting the rose diagram into a plurality of offset vector slices, and combining all the offset vector slices into a five-dimensional OVT body; and

[0052] Step S4 : suppress the noise of the seismic data by performing five-dimensional spectral analysis and stacking denoising on the five-dimensional OVT volume.

[0053] figure 2A CDP grid of common depth points according to an embodiment of the present invention i...

Embodiment 2

[0074] The second embodiment, as an implementation of the first embodiment, provides a noise suppression method for five-dimensional spectrum analysis of seismic data. figure 1 It is a flow chart of a noise suppression method for seismic data five-dimensional spectrum analysis according to an embodiment of the present invention. like figure 1 As shown, the method includes:

[0075] Step S1: converting the three-dimensional common shot gathers into pre-stack three-dimensional CDP gathers by using the common depth point grid;

[0076] Step S2: form a rose diagram according to the position distribution density of the center point of the offset coordinates in the pre-stack three-dimensional CDP gather;

[0077] Step S3: splitting the rose diagram into a plurality of offset vector slices, and combining all the offset vector slices into a five-dimensional OVT body; and

[0078] Step S4 : suppress the noise of the seismic data by performing five-dimensional spectral analysis and s...

Embodiment 3

[0106] The third embodiment, as another implementation of the first embodiment, provides a noise suppression method for five-dimensional spectrum analysis of seismic data. figure 1 It is a flow chart of a noise suppression method for seismic data five-dimensional spectrum analysis according to an embodiment of the present invention. like figure 1 As shown, the method includes:

[0107] Step S1: converting the three-dimensional common shot gathers into pre-stack three-dimensional CDP gathers by using the common depth point grid;

[0108] Step S2: form a rose diagram according to the position distribution density of the center point of the offset coordinates in the pre-stack three-dimensional CDP gather;

[0109] Step S3: splitting the rose diagram into a plurality of offset vector slices, and combining all the offset vector slices into a five-dimensional OVT body; and

[0110] Step S4 : suppress the noise of the seismic data by performing five-dimensional spectral analysis a...

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Abstract

The invention relates to a five-dimensional spectral analysis noise suppression method for seismic data, a storage medium and a computing device. The method includes: converting a three-dimensional common shot gather into a pre-stack three-dimensional CDP gather by using a common-depth point grid; The position distribution density of the center point of the offset coordinates in the three-dimensional CDP gather, forming a rose diagram; the rose diagram is divided into a plurality of offset vector slices, and all the offset vector slices are combined into a five-dimensional OVT and suppressing the noise of the seismic data by performing five-dimensional spectral analysis and stacking denoising on the five-dimensional OVT volume.

Description

technical field [0001] The invention relates to the technical field of seismic exploration data processing, in particular to a noise suppression method for seismic data five-dimensional spectrum analysis, a storage medium and a computing device. Background technique [0002] Noise suppression is an important part of seismic exploration data processing. With the continuous deepening of seismic exploration, the collected seismic data are often complex areas with low signal-to-noise ratios such as deserts, mountainous areas and loess plateau; in addition, complex terrain, huge differences in near-surface physical properties, and complex changes in geological structure and lithology , and sometimes the oil and gas burial depth is relatively large, which causes great difficulties in the acquisition and processing of exploration seismic data. In addition, with the change of the purpose of geological exploration, the search for oil and gas from the original structure has turned to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/36
CPCG01V1/36
Inventor 刘定进李洪建李博
Owner CHINA PETROLEUM & CHEM CORP
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