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Seismic record inversion method, device and apparatus, and storage medium

A seismic recording and inversion technology, applied in the field of energy development and exploration, can solve problems such as training and optimization of a large number of unlabeled seismic records, and achieve the effect of avoiding model collapse, avoiding gradient disappearance, and improving stability

Active Publication Date: 2021-11-30
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0004] However, when faced with a large number of seismic records and a small number of corresponding wave impedances, it is difficult to achieve the training and optimization of a large number of unlabeled seismic records to achieve the accuracy required for inversion.

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  • Seismic record inversion method, device and apparatus, and storage medium
  • Seismic record inversion method, device and apparatus, and storage medium
  • Seismic record inversion method, device and apparatus, and storage medium

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[0078] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0079] The technical solution of the present invention and how the technical solution of the present invention solves the above technical problems will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0080] An application scenario p...

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Abstract

The embodiment of the invention provides a seismic record inversion method, device and apparatus, and a storage medium, and the method comprises the steps that: small sample seismic records, corresponding small sample wave impedance and large sample label-free seismic records are obtained, and a dual WGAN model is built based on a neural network model, wherein the dual WGAN model comprises an inversion WGAN and a forward WGAN; the dual WGAN model is optimized through small sample seismic records, small sample wave impedance and large sample label-free seismic records, the large sample label-free seismic records are input into an optimized inversion generator, corresponding large sample wave impedance is generated, and the dual WGAN model is constructed; and based on loop consistency of dual learning, high-precision inversion of small sample seismic records can be realized, and a Wasserstein distance is utilized to replace a cross entropy loss function in a traditional GAN, so that the stability of seismic record inversion is improved.

Description

technical field [0001] The invention relates to the field of energy development and exploration, in particular to a seismic record inversion method, device, equipment and storage medium. Background technique [0002] Wave impedance inversion is a post-stack inversion technique for estimating the elastic parameters of subsurface media. According to the convolution formula, the amplitude of the same reflection point in the post-stack seismic gather is related to the elastic properties of the medium above and below the reflection interface. The inversion of post-stack seismic records is based on this relationship. Elastic parameter, namely wave impedance. [0003] The existing inversion method is to apply the convolutional neural network to the wave impedance inversion, based on the new method of building the velocity model directly from the original seismic record based on the supervised deep convolutional neural network. During the training phase, the network builds a nonli...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20
CPCG06F30/20Y02T10/40
Inventor 王梓旭
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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