Data construction method based on seismic feature transformation space

A technology of feature transformation and seismic data, applied in the direction of seismic signal processing, etc., can solve the problems of insufficient use of seismic data, low accuracy and reliability of data construction, etc.

Active Publication Date: 2021-06-15
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

At present, under the framework of compressed sensing, a variety of seismic data construction methods based on different mathematical transformations have been developed, such as Fourier transform, Radon transform, Curvelet transform, etc. The typical feature of these methods is that they do not make full use of the characteristics of seismic data itself. , so the accuracy and reliability of data construction is not high

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  • Data construction method based on seismic feature transformation space
  • Data construction method based on seismic feature transformation space
  • Data construction method based on seismic feature transformation space

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Embodiment Construction

[0023] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0024] The data construction method based on the seismic feature transformation space of the present invention can automatically analyze the characteristics of the seismic data, then select a reasonable and effective feature transformation space according to the analysis result, and finally realize data construction processing in the feature transformation space. The main steps it includes are:

[0025] Step 1, input the seismic data to be reconstructed; input the original seismic data s, the seismic data mentioned here refers to seismic signals with certain morphological characteristics, including seismic shot records, stacked sections, migration sections and inversion data.

[0026] Step 2, automatically analyze the characteristics of the input seism...

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Abstract

The present invention provides a data construction method based on seismic feature transformation space, comprising: step 1: input seismic data to be reconstructed; step 2: analyze the characteristics of the input seismic data, and determine an effective feature transformation space according to the analysis result; Step 3: According to the feature transformation space, use the corresponding feature transformation to sparsely express the features of seismic data; Step 4: Initialize the data construction processing method; Step 5: Find the threshold value of each iteration; Step 6: Perform data construction algorithm Iterative calculation. The data construction method based on seismic feature transformation space can automatically select a reasonable and effective feature transformation space according to the geophysical information contained in the actual seismic data itself, which is self-adaptive; it can meet the transformation requirements of different seismic data and better realize seismic The sparse expression of the signal in the feature transformation space; the iterative convergence speed is fast, the calculation efficiency is high, and the data construction accuracy is high.

Description

technical field [0001] The invention relates to the field of oil and gas exploration seismic data processing, in particular to a data construction method based on seismic feature transformation space. Background technique [0002] In the process of field acquisition, under the influence of complex geological conditions and construction conditions, the collected seismic data often has missing or bad tracks, which will cause irregularities in the seismic data and cause serious damage to the subsequent processing and interpretation work. influences. Therefore, information recovery and construction of irregular seismic data to obtain complete and accurate seismic data is one of the important links in seismic data processing. Commonly used seismic data recovery and construction methods include three categories: The first category is the seismic data construction method based on the wave equation. This type of method performs data recovery and construction according to the charac...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 秦宁王延光王兴谋梁鸿贤揭景荣李建明傅金荣关键
Owner CHINA PETROLEUM & CHEM CORP
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