Seismic response simulation method based on VTI anisotropic propagation matrix

A technology of propagation matrix and anisotropy, which is applied in the field of seismic response simulation based on VTI anisotropic propagation matrix, can solve problems such as anisotropy that are rarely considered, and achieve the effect of improving description accuracy, accuracy, and understanding
CN110542928AInactive Publication Date: 2019-12-06CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2019-12-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a seismic response simulation method based on a VTI anisotropic propagation matrix. The method comprises steps that VTI medium elastic parameters are obtained through rock physical modeling according to logging data; a frequency-varying reflection coefficient Rf of corresponding reflection waves is calculated according to the generalized propagation matrix theory of an inelastic thin interbed reflection coefficient; an amplitude spectrum Uf of the corresponding reflection waves is solved according to the frequency-varying reflection coefficient Rf; inverse Fourier transform of the Uf is performed to obtain a reflection wave waveform ut. Compared with a seismic synthetic record obtained by a conventional convolution model, the seismic synthetic record obtained by themethod is advantaged in that waveform description precision is improved.
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Description

technical field

[0001] The invention relates to the technical field of oil and gas geophysics, in particular to a seismic response simulation method based on a VTI anisotropic propagation matrix. Background technique

[0002] Seismic data studies show that the combination of fracture-induced VTI anisotropy with a horizontal axis of symmetry and sedimentary or lithologically-induced anisotropy with a vertical axis of symmetry exists widely. In addition, thin interbeds of two lithologies often appear in the reservoir. Conventional synthetic seismic records are obtained by convolution of reflection coefficient and wavelet, where reflection coefficient can be calculated by Zoeppritz equation or approximate expression of reflection coefficient. The commonly used approximate expression of reflection coefficient is limited to the assumption of describing a single interface, and the convolution calculation method based on the time domain cannot describe the phenomenon of composite ...

Claims

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