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Time-frequency data phase information extraction method and device, electronic equipment and medium

A technology of phase information and extraction method, which is applied in the field of time-frequency data phase information extraction, and can solve the problem of inability to interpret seismic data.

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the embodiment of the present invention provides a method, device, electronic equipment and medium for extracting phase information of time-frequency data, at least solving the problem that seismic data cannot be accurately interpreted based on phase spectrum in the prior art

Method used

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  • Time-frequency data phase information extraction method and device, electronic equipment and medium
  • Time-frequency data phase information extraction method and device, electronic equipment and medium
  • Time-frequency data phase information extraction method and device, electronic equipment and medium

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] like figure 1 As shown, a time-frequency data phase information extraction method includes:

[0058] Step S101: Select a time-frequency decomposition method that satisfies the set conditions;

[0059] Step S102: using the time-frequency decomposition method to perform time-frequency decomposition on the acquired seismic data to obtain time-frequency decomposition data;

[0060] Step S103: Calculate the phase information gather based on the time-frequency decomposed data to obtain the phase information of the time-frequency data.

[0061] Optionally, the time-frequency decomposition method includes continuous wavelet transform.

[0062] Optionally, the setting conditions are:

[0063]The frequency integration of the time-frequency decomposition data is equal to the original seismic trace in the acquired seismic data, namely:

[0064] S(t)=∫S'(f,t)df,

[0065] Among them, S(t) is the original seismic trace, S′(f,t) is the time-frequency decomposition data, f is the f...

Embodiment 2

[0077] like Image 6 As shown, a time-frequency data phase information extraction device includes:

[0078] Selection module: used to select the time-frequency decomposition method that meets the set conditions;

[0079] Decomposition module: for using the time-frequency decomposition method to perform time-frequency decomposition on the acquired seismic data to obtain time-frequency decomposition data;

[0080] Calculation module: used to calculate the phase information gather based on the time-frequency decomposition data to obtain the phase information of the time-frequency data.

[0081] Optionally, the time-frequency decomposition method includes continuous wavelet transform.

[0082] Optionally, the setting conditions are:

[0083] The frequency integration of the time-frequency decomposition data is equal to the original seismic trace in the acquired seismic data, namely:

[0084] S(t)=∫S'(f,t)df,

[0085] Among them, S(t) is the original seismic trace, S′(f,t) is ...

Embodiment 3

[0097] An embodiment of the present invention provides an electronic device including a memory and a processor,

[0098] a memory storing executable instructions;

[0099] A processor, the processor runs executable instructions in the memory to implement the method for extracting phase information of time-frequency data in Embodiment 1.

[0100] The memory is used to store non-transitory computer readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache). The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, and the like.

[0101] The processor may be a central processing unit (CPU) or other form of processing unit having data processing capabilities and / or instructio...

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Abstract

The embodiment of the invention discloses a time-frequency data phase information extraction method and device, electronic equipment and a medium. The time-frequency data phase information extraction method comprises the following steps: selecting a time-frequency decomposition method meeting a set condition; performing time-frequency decomposition on the acquired seismic data by using the time-frequency decomposition method to obtain time-frequency decomposition data; and calculating a phase information gather based on the time-frequency decomposition data to obtain time-frequency data phase information. According to the method, the proper time-frequency decomposition method is selected to perform time-frequency decomposition on the seismic data, the extraction of the time-frequency data phase information is realized based on the obtained time-frequency decomposition data, and the extracted phase information can intuitively and clearly interpret the seismic data, so that the purpose of accurately interpreting the seismic data based on the phase spectrum is achieved.

Description

technical field [0001] The invention belongs to the technical field of ground seismic data processing, and more specifically relates to a method, device, electronic equipment and medium for extracting phase information of time-frequency data. Background technique [0002] Reservoir prediction using seismic data time-frequency analysis is widely used. These methods analyze the amplitude spectrum of seismic data spectrum, use the characteristics of high-frequency attenuation and low-frequency shadow of fluid-bearing reservoirs to assist in fluid detection and thin interbed identification, and A good application effect has been achieved. Phase spectrum is also a very important part of seismic signal spectrum analysis. At present, researchers mainly use phase information to assist in the interpretation of stratigraphic structures, such as identifying overstripping wires and calculating thin layer thickness through instantaneous phase information. [0003] In the prior art, bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36G01V1/30
CPCG01V1/36G01V1/307G01V2210/48G01V2210/43G01V2210/63
Inventor 崔树果
Owner CHINA PETROLEUM & CHEM CORP