Seismic imaging method and device based on data fusion,equipment and storage medium

A technology of data fusion and imaging method, which is applied in the field of seismic exploration, can solve the problems of serious high-frequency attenuation and unfavorable problems of medium and deep seismic data, and achieve high fidelity, good imaging effect, and good continuity of event axis

Pending Publication Date: 2021-08-06
CNOOC TIANJIN BRANCH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its disadvantage is that the high-frequency attenuation of medium-deep seismic data is serious, which is not conducive to the description of structural details

Method used

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  • Seismic imaging method and device based on data fusion,equipment and storage medium
  • Seismic imaging method and device based on data fusion,equipment and storage medium
  • Seismic imaging method and device based on data fusion,equipment and storage medium

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Embodiment 1

[0047] figure 1 It is a flow chart of a seismic imaging method based on data fusion provided by Embodiment 1 of the present invention. This method can be applied to various seismic exploration systems, such as offshore oil and gas exploration systems. The seismic imaging method based on data fusion provided in this embodiment can be It is executed by a terminal or a server in the seismic exploration system, and may also be implemented through interaction between the terminal and the server. In this embodiment, the server is taken as an example. Such as figure 1 As shown, the method includes:

[0048] S110. Perform preprocessing based on the acquired first seismic data and second seismic data to obtain corresponding third seismic data and fourth seismic data respectively, where the data matching degree between the third seismic data and the fourth seismic data satisfies matching degree requirements.

[0049] The first seismic data and the second seismic data are different se...

Embodiment 2

[0062] Embodiment 2 of the present invention is based on Embodiment 1 of the present invention, and further supplements and / or explains part of the content in Embodiment 1, such as the specific process of preprocessing, the process of obtaining multidimensional matching factors, and the like. Specifically include:

[0063] Such as figure 2 As shown, step S110 includes steps S111-114:

[0064] S111. Select a target preprocessing method in the preset preprocessing methods, the target preprocessing method is a preprocessing method that has not been used in the preset preprocessing methods, and pass the target preprocessing method based on the first seismic data The processed first seismic data is obtained through a target preprocessing method based on the second seismic data to obtain the processed second seismic data.

[0065] The preset preprocessing method is used to adjust the fusion quality of the first seismic data and the second seismic data. In this embodiment, the dat...

Embodiment 3

[0089] Figure 5 A seismic imaging device 300 based on data fusion provided in Embodiment 3 of the present invention. The seismic imaging device 300 based on data fusion provided in Embodiment 3 of the present invention can execute the seismic imaging device 300 based on data fusion provided in any embodiment of the present invention. The imaging method has corresponding functional modules and beneficial effects for executing the method. Such as Figure 5 As shown, the seismic imaging device 300 based on data fusion includes:

[0090]A preprocessing module 310, configured to perform preprocessing based on the acquired first seismic data and second seismic data to obtain corresponding third seismic data and fourth seismic data respectively, and the difference between the third seismic data and the fourth seismic data The data matching degree meets the matching degree requirement;

[0091] A matching factor determination module 320, configured to obtain a multidimensional tim...

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Abstract

The embodiment of the invention discloses a seismic imaging method and device based on data fusion, equipment and a storage medium. The method comprises the following steps: performing preprocessing based on acquired first seismic data and second seismic data to respectively obtain corresponding third seismic data and fourth seismic data, wherein the data matching degree between the third seismic data and the fourth seismic data meets the matching degree requirement; based on the third seismic data and the fourth seismic data, solving a multi-dimensional space-time varying matching factor in stages; performing staged matching fusion on the third seismic data and the fourth seismic data based on a space-time variation matching factor to obtain a common midpoint gather; and performing post-processing based on the common midpoint gather to obtain a superposed image. The superposed image obtained by the embodiment of the invention has the advantages of different seismic data in different frequency bands, and through preprocessing, the difference of different seismic data in phase, frequency and energy is well eliminated, and the phenomena of poor event continuity and false fault in a middle-deep layer after fusion are avoided.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of seismic exploration, in particular to a seismic imaging method, device, equipment and storage medium based on data fusion. Background technique [0002] In recent years, with the promotion of offshore oil and gas exploration, the exploration target layer has gradually expanded to the lower strata. Improving seismic imaging in mid-deep and complex structural belts, and improving the signal-to-noise ratio and resolution of mid-deep seismic data have become an urgent need for seismic technology in oil and gas exploration and development at the present stage. [0003] Conventional offshore streamer (flat cable) seismic acquisition data is affected by sea surface ghost reflections (ghost waves) and there are notches, which narrows the frequency band of seismic records and reduces the resolution of seismic data. The ghost wave frequency of the seismic acquisition data of inclined cables (...

Claims

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Application Information

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IPC IPC(8): G06K9/62
CPCG06F18/22G06F18/251
Inventor 张振波刘杰徐乐意易浩唐晶全先晋
Owner CNOOC TIANJIN BRANCH
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