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Fault shadow area CRP gather acquisition method, apparatus and device, and storage medium

A shadow area and fault technology, applied in the field of exploration, can solve the problem of lack of strong support of seismic data signals, etc.

Active Publication Date: 2021-10-01
SHANGHAI BRANCH CHINA OILFIELD SERVICES +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two types of solutions, in essence, lack the strong support of seismic data signals, and are technical solutions under the guidance of geological knowledge, which are subject to greater subjectivity and multi-solution

Method used

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  • Fault shadow area CRP gather acquisition method, apparatus and device, and storage medium
  • Fault shadow area CRP gather acquisition method, apparatus and device, and storage medium
  • Fault shadow area CRP gather acquisition method, apparatus and device, and storage medium

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Experimental program
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Effect test

Embodiment 1

[0027] figure 1 It is a flow chart of a method for obtaining CRP gathers in the fault shadow area provided by Embodiment 1 of the present invention. This embodiment is applicable to the case of obtaining CRP gathers, and the method can be implemented by the CRP gather obtaining device in the embodiment of the present invention. implementation, the device can be implemented in software and / or hardware, such as figure 1 As shown, the method specifically includes the following steps:

[0028] S110. Perform pre-processing on the original data to obtain first data.

[0029] Wherein, the pre-processing includes but not limited to: interference wave suppression, ghost wave suppression, multiple wave suppression, energy and frequency compensation, and data regularization.

[0030] Exemplarily, the original data is pre-processed to obtain the first data, for example, after the original data is sequentially subjected to interference wave suppression, ghost wave suppression, multiple w...

Embodiment 2

[0084] figure 2 It is a schematic structural diagram of a device for obtaining CRP gathers in a fault shadow area provided by Embodiment 2 of the present invention. This embodiment is applicable to the acquisition of CRP gathers in fault shadow areas. The device can be implemented in software and / or hardware. The device can be integrated into any device that provides the function of acquiring CRP gathers in fault shadow areas, such as figure 2 As shown, the device for acquiring CRP gathers in fault shadow areas specifically includes: a processing module 210 , a first extraction module 220 , a modeling module 230 and an acquisition module 240 .

[0085] Wherein, the processing module is used to pre-process the original data to obtain the first data;

[0086] The first extraction module is used to extract the dominant signal from the original data to obtain the first target dominant signal;

[0087] A modeling module, configured to perform prestack migration velocity modelin...

Embodiment 3

[0097] image 3 It is a schematic structural diagram of a computer device in Embodiment 3 of the present invention. image 3 A block diagram of an exemplary computer device 12 suitable for implementing embodiments of the invention is shown. image 3 The computer device 12 shown is only an example, and should not impose any limitation on the functions and scope of use of the embodiments of the present invention.

[0098] Such as image 3 As shown, computer device 12 takes the form of a general-purpose computing device. Components of computer device 12 may include, but are not limited to: one or more processors or processing units 16 , system memory 28 , bus 18 connecting various system components including system memory 28 and processing unit 16 .

[0099] Bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus struc...

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Abstract

The invention discloses a fault shadow region CRP gather acquisition method and device, equipment and a storage medium. The method comprises the following steps: preprocessing original data to obtain first data; performing dominant signal extraction on the original data to obtain a first target dominant signal; performing pre-stack migration velocity modeling according to the first target dominant signal to obtain a pre-stack migration velocity model; and inputting the first data into the pre-stack migration velocity model to obtain a CRP gather, through the technical scheme of the invention, by carrying out dominant signal extraction on the fault shadow region, a seismic signal with a real signal-to-noise ratio can be obtained, and by taking the seismic signal as a standard, adaptive signal constraint extraction is carried out on a range outside the fault shadow region. A fine pre-stack migration velocity model is established for seismic data with stable signal-to-noise ratio transverse consistency, a data volume with improved consistency is obtained, weakening of the boundary of a fault shadow region is finally achieved, and accurate understanding of the overall structure is obtained.

Description

technical field [0001] The embodiments of the present invention relate to the field of exploration technology, and in particular to a method, device, equipment and storage medium for acquiring a CRP gather in a fault shadow area. Background technique [0002] With the requirement of fine and efficient exploration, the fine implementation of structures and the accurate description of structural traps are the basic requirements and urgent needs of geophysical prospecting technology. When the seismic excitation signal propagates in the subsurface medium, it will produce a change in seismic response when it encounters a fault. Therefore, on the seismic section, it is often seen that the strata in the hanging wall of the fault are continuous reflections, while there is a "triangular area" in the footwall of the fault, and the phenomenon of "pull-up" or "pull-down" in the imaging time of the event or the dislocation of the event occurs. This indeterminate "pull-up" or "pull-down"...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/30
CPCG01V1/282G01V1/301G01V1/306
Inventor 刘江黄鑫涂齐催毛云新唐晶全先晋李炳颖刘晓晖王腊梅王伟陈易周李洋森包全娄敏常吟善
Owner SHANGHAI BRANCH CHINA OILFIELD SERVICES
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