Seismic horizon automatic tracking method and apparatus

An automatic tracking, seismic layer technology, applied in the field of seismic exploration

Inactive Publication Date: 2017-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a method and device for automatic seismic horizon tracking, which can better suppress noise and achieve better automatic tracking results

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  • Seismic horizon automatic tracking method and apparatus
  • Seismic horizon automatic tracking method and apparatus
  • Seismic horizon automatic tracking method and apparatus

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Embodiment Construction

[0042] The specific embodiments of the invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0043] figure 1 A flowchart showing the method for automatically tracking seismic horizons provided by an embodiment of the present invention, as shown in figure 1 As shown, the seismic horizon automatic tracking method of the present embodiment includes:

[0044] 101. Store the seismic raw data in a two-dimensional array.

[0045] In this embodiment, the seismic section data is acquired, and the seismic section data is stored in a two-dimensional array a i,j Among them, i is the number of lines (line number), and j is the number of cdp.

[0046] 102. Perform denoising processing on the seismic profile data according to a Total Variation (TV, Total Variation) algorithm; ...

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Abstract

The invention discloses a seismic horizon automatic tracking method and apparatus. The method includes steps: obtaining seismic profile data, and storing the seismic profile data in a two-dimensional array; performing denoising processing on the seismic profile data according to a total variation algorithm; performing coherence calculation and dip angle scanning on the seismic profile data after denoising processing based on a coherence algorithm of similarity coefficient; and selecting a starting point in the seismic horizon, and performing event tracking. According to the method, good effect of seismic horizon automatic tracking results can be achieved in the condition of low signal to noise ratio.

Description

technical field [0001] The invention relates to the technical field of seismic exploration, in particular to an automatic tracking method and device for seismic horizons. Background technique [0002] Seismic data often have a lot of noise, which greatly interferes with the results of automatic horizon tracking. The automatic tracking method of seismic horizon is mainly based on the dynamics and kinematics characteristics of seismic waves for comparative tracking. Commonly used methods include automatic tracking based on waveform features and automatic tracking based on correlation. The automatic tracking based on the waveform features only looks for the similar waveform structure of the feature points in the search time window, and does not perform correlation calculations between seismic traces, so the obtained results are not reliable. Correlation-based automatic tracking takes the seed point as the center, selects a section of seismic trace according to the range of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/30
Inventor 刘旭跃周巍张兵
Owner CHINA PETROLEUM & CHEM CORP
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