Method, device and equipment for forward modeling of seismic sound waves in viscous sound VTI medium and medium

By introducing the forward modeling method of viscous acoustic VTI medium into seismic simulation, the coupling problem between medium anisotropy and seismic attenuation is solved, achieving high-precision seismic simulation and improving the accuracy of seismic imaging and interpretation, especially in complex oil and gas reservoir areas.

CN122283871APending Publication Date: 2026-06-26CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202411930704.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-25
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing technologies cannot simultaneously consider medium anisotropy and seismic attenuation in traditional seismic simulations, resulting in insufficient accuracy in seismic imaging and interpretation, especially in complex oil and gas reservoir areas where high accuracy requirements are difficult to meet.

Method used

The forward modeling method for seismic acoustic waves in viscoelastic VTI media is adopted. By obtaining the expected Q value, calculating the viscoelastic velocity, fitting the generalized standard linear body model, constructing the wave equation of seismic acoustic waves in viscoelastic VTI media, and solving it using the finite difference method.

Benefits of technology

It significantly improves the accuracy and applicability of earthquake simulation, enhances the accuracy of earthquake simulation in complex terrain, geology and oil and gas reservoir areas, and provides a foundation for subsequent high-precision earthquake velocity modeling and earthquake migration imaging.

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Abstract

The embodiment of the invention relates to the technical field of seismic imaging, and discloses a seismic sound wave forward modeling simulation method, device and equipment in a viscous sound VTI medium and the medium, and the method comprises the steps: obtaining an expected Q value; calculating the viscoelastic velocity of the seismic sound wave according to the expected Q value; fitting parameters of the generalized standard linear body model; constructing a seismic sound wave equation in a viscous sound VTI medium based on the generalized standard linear body model; and solving a seismic sound wave equation in the viscoelastic VTI medium by using a finite difference method and the viscoelastic velocity. The problem that seismic anisotropy and seismic attenuation cannot be considered at the same time in traditional seismic simulation is solved, the accuracy and applicability of seismic simulation can be remarkably improved, the precision of seismic simulation in complex terrain geology and oil and gas reservoir areas can be remarkably improved, and a foundation is provided for subsequent high-precision seismic velocity modeling and seismic migration imaging.
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