Method and system for suppressing strong scattering noise in pre-stack seismic data based on 3D-SNACNN network

A pre-stack seismic and noise suppression technology, applied in the field of signal processing, can solve problems such as strong scattering noise that is difficult to eliminate, and achieve the effects of complete noise suppression, sufficient extraction, and high processing efficiency

Pending Publication Date: 2022-04-12
XI AN JIAOTONG UNIV
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a method and system for suppressing strong scattering noise in pre-stack seismic data based on 3D-SNACNN network to solve the problem that strong scattering noise in pre-stack seismic data is difficult to eliminate. For the problem of parallel processing of the test program, 4 GPUs can be used for testing at the same time, and the processing speed is increased by 10 times compared with the traditional method

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  • Method and system for suppressing strong scattering noise in pre-stack seismic data based on 3D-SNACNN network

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[0073] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0074] In the description of the present invention, it should be understood that the terms "comprising" and "comprising" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or more other features, Presence or addition of wholes, steps, operations, elements, components and / or collections thereof.

[0075] It should also be understood that the terminology used in the descriptio...

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Abstract

The invention discloses a method and system for suppressing strong scattering noise in pre-stack seismic data based on a 3D-SNACNN network, and the method comprises the steps: constructing the 3D-SNACNN network, selecting three-dimensional seismic data, and rearranging the three-dimensional seismic data into OVT domain data as a data set for network training; de-noising the selected OVT domain seismic data by using a three-dimensional continuous wavelet fast algorithm to obtain corresponding clean data, dividing the clean data and a network training data set into a plurality of three-dimensional data meeting 3D-SNACNN network input requirements in the same manner, then screening out part of data from the three-dimensional data to form training sample pairs, and finally obtaining the training sample pairs; and sending the training sample pair into a 3D-SNACNN network for training, and after the training is completed, processing the seismic data in the test set by using the 3D-SNACNN network to complete suppression of various random noises in the three-dimensional seismic data. According to the method, the interference problem of random noise in the post-stack three-dimensional seismic data is solved, strong scattering noise in the pre-stack seismic data is effectively suppressed, parallel processing is supported, good self-adaptability is achieved, and the industrial large-scale calculation requirement is met.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a method and system for suppressing strong scattering noise in pre-stack seismic data based on a 3D-SNACNN network. Background technique [0002] With the continuous improvement of oil and gas exploration and the continuous extension of exploration fields, the main objects of oil and gas exploration are also different from before. The main objects of oil and gas exploration in my country have changed into fractured, subtle and deep oil and gas reservoirs. This type of reservoir is the most difficult type of reservoir to explore and develop, and faces a series of common exploration challenges such as complex surface conditions and underground structures, thin reservoirs and strong heterogeneity. The above challenges force mining as much useful information as possible from seismic exploration data, which puts forward higher requirements for seismic exploration...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28G01V1/36
Inventor 陈文超刘达伟王晓凯高文斌
Owner XI AN JIAOTONG UNIV
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