HTI medium quasi longitudinal wave forward modeling method and device, storage medium and processor

A forward modeling and medium technology, applied in the field of geophysical exploration, can solve the problem that the seismic wave forward modeling process still needs to be optimized, and achieve the effect of eliminating slow longitudinal wave interference, high computing efficiency, and low memory usage

Active Publication Date: 2021-05-07
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0006] However, in related technologies, the seismic wave forward modeling process based on HTI media still needs to be optimized

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  • HTI medium quasi longitudinal wave forward modeling method and device, storage medium and processor
  • HTI medium quasi longitudinal wave forward modeling method and device, storage medium and processor
  • HTI medium quasi longitudinal wave forward modeling method and device, storage medium and processor

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Embodiment Construction

[0052] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0053] In the related art, for the forward modeling simulation of the wave equation of anisotropic medium, the elastic wave equation is often used for simulation. However, although rich seismic information can be obtained by using the elastic wave equation for simulation, the computational complexity is large.

[0054] Therefore, Alkhalifah (1998) proposed to introduce a pseudo-acoustic approximation of transversely isotropic (TI) media by setting the shear velocity along the axis of symmetry to zero, that is, quasi-p-wave (also called qP-wave) approximation equation simulation. ...

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Abstract

The embodiment of the invention provides an HTI medium quasi longitudinal wave forward modeling method and device, a storage medium and a processor, and belongs to the technical field of geophysical exploration. The method comprises the steps of: deducing an HTI medium quasi longitudinal wave integral equation; splitting a perfectly matched layer absorption boundary, and setting a boundary condition for the HTI medium quasi longitudinal wave integral equation; and performing forward modeling on the HTI medium quasi longitudinal wave integral equation after the boundary conditions are set by using high-order finite difference.

Description

technical field [0001] The invention relates to the technical field of geophysical prospecting, in particular to a method, device, storage medium and processor for quasi-p-wave forward modeling in an HTI medium. Background technique [0002] Seismic wave forward modeling is mainly to obtain the propagation law of seismic wave in the known underground geological model, including propagation time, path, energy and so on. Through forward modeling, we can correctly understand the kinematics and dynamics characteristics of seismic waves propagating in complex media, and accurately analyze the characteristics of reflected seismic wavefields produced by underground geological structures. [0003] In related technologies, the wave equation is often used for forward modeling of seismic waves, and the wave equation method is the most important method for numerical simulation of seismic wave propagation in increasingly complex geological structures. [0004] In reality, due to the pre...

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01V1/30
CPCG01V1/30G01V1/307G01V2210/673G01V2210/63Y02E60/00
Inventor吴国忱张豪印兴耀宗兆云曹丹平张佳佳
OwnerCHINA UNIV OF PETROLEUM (EAST CHINA)