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Method and system for determining Poynting vector of seismic wave field

A technology of Poynting vector and seismic wave field, which is applied in the field of seismic exploration, can solve problems such as the instability of Poynting vector calculation, and achieve the effect of improving stability

Active Publication Date: 2021-07-16
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a method and system for determining the Poynting vector of the seismic wave field to solve the problem of unstable calculation of the Poynting vector

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  • Method and system for determining Poynting vector of seismic wave field
  • Method and system for determining Poynting vector of seismic wave field
  • Method and system for determining Poynting vector of seismic wave field

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Embodiment Construction

[0050] 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 only some, not all, embodiments of the present invention. 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.

[0051] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0052] The propagation vector of seismic wave field plays a very important role in the field of seismic exploration. It is a key parameter for generating angle-domain common imaging point gathers, and is widely us...

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Abstract

The invention discloses a method and a system for determining a Poynting vector of a seismic wave field. The method comprises the following steps: adjusting the amplitude of a time derivative of a seismic wave field, and calculating a Poynting vector of the adjusted time derivative of the seismic wave field to obtain a first Poynting vector, with the difference value between the amplitude of the first Poynting vector and the amplitude of the second Poynting vector being within a set range; the second Poynting vector being the Poynting vector of the seismic wave field; and calculating the second Poynting vector and the first Poynting vector to obtain a final Poynting vector of the seismic wave field. According to the method, the problem of unstable poynting vector calculation is solved.

Description

technical field [0001] The invention relates to the field of seismic exploration, in particular to a method and system for determining the Poynting vector of a seismic wave field. Background technique [0002] The Poynting vector is in the same direction as the propagation vector of the seismic wave field. Because of its high computational efficiency, it is widely used in the field of seismic exploration. [0003] The Poynting vector has the problem of calculation instability, because the Poynting vector needs to calculate the spatial and temporal derivatives of the seismic wave field, and the derivative value at the peak and trough of the seismic wavelet in the seismic wave field is zero, so Poynting Vectors cannot obtain the direction of propagation at these points, as figure 1 The shown seismic wavelet and its first time derivative, figure 1 The positions marked in the middle circle are the positions where the calculation of the Poynting vector is unstable, and these po...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
CPCG01V1/30G01V2210/63G01V1/282G01V1/307G01V1/366
Inventor 李志远梁光河
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI