Method and device for evaluating seismic data processing results

A technology for seismic data and processing results, applied in the field of geological exploration, can solve the problem of inaccurate judgment of resolution processing results, and achieve the effect of accurate evaluation

Active Publication Date: 2018-02-09
CHINA PETROLEUM & CHEM CORP +1
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[0004] The present invention provides an evaluation method and device for seismic data processing results, which

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  • Method and device for evaluating seismic data processing results
  • Method and device for evaluating seismic data processing results
  • Method and device for evaluating seismic data processing results

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Embodiment Construction

[0049] The invention provides a seismic data processing result evaluation method and device, which are used to solve the problem of inaccurate judgment of the processing result of increasing the resolution in the prior art.

[0050] In order to achieve the above objective, the technical solution provided by the present invention is:

[0051] An evaluation method of seismic data processing results includes the following steps:

[0052] (1) Calculate reflection coefficient based on sonic logging curve and density logging curve;

[0053] (2) Select the corresponding frequency point from the processing results of each seismic data to be evaluated and use it as the corresponding wavelet frequency to calculate the seismic wavelet corresponding to the processing result of each seismic data to be evaluated;

[0054] (3) Calculate the composite record of each seismic wavelet according to the obtained seismic wavelet and reflection coefficient;

[0055] (4) Comparing the seismic data processing re...

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Abstract

The invention provides a method and a device for evaluating seismic data processing results. The method includes the following steps: calculating the reflection coefficient according to an acoustic logging curve and a density logging curve; selecting a corresponding frequency point from each to-be-evaluated seismic data processing result as the wavelet frequency, and calculating the seismic wavelet corresponding to each to-be-evaluated seismic data processing result; calculating the synthetic record of each seismic wavelet according to each seismic wavelet and the reflection coefficient; and comparing the to-be-evaluated seismic data processing results and the synthetic records of the frequency points to get the correlation, wherein, the stronger the correlation between the seismic data processing result and the synthetic record is, the more truly the seismic data processing result of the corresponding frequency is. According to the technical scheme provided by the invention, each seismic data processing result is evaluated according to the synthetic record of the corresponding seismic wavelet. As the seismic wavelets can be processed at high resolution using the synthetic recordsthereof, the seismic processing results can be accurately evaluated using the synthetic record results of the seismic wavelets.

Description

Technical field [0001] The invention belongs to the technical field of geological prospecting, and specifically relates to a method and device for evaluating seismic data processing results. Background technique [0002] With the improvement of the degree of exploration and the more and more complex exploration geological targets, the requirements for the quality of seismic data are getting higher and higher. The original seismic data frequency cannot meet the needs of interpretation of small faults and thin sand and mudstone interbeds. Therefore, geophysical prospectors continue to improve the resolution of seismic data by broadening the bandwidth of seismic data. However, the highest frequency of seismic data is related to the original seismic acquisition and cannot be increased without limit. If the frequency of seismic data is broadened unrestrictedly, the seismic reflection characteristics of seismic data will be destroyed, and a kind of false high-frequency seismic data wi...

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Application Information

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IPC IPC(8): G01V13/00
CPCG01V13/00
Inventor 张永华陈祥严永新杨云飞赵雨晴杜伟朱景修罗家群郑凯文李黎明郭毅
Owner CHINA PETROLEUM & CHEM CORP
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