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Method, device and equipment for processing wave propagation

A technology of wave propagation and porous media, applied in the direction of measuring devices, seismic signal processing, geophysical measurement, etc., can solve the complex problems of reservoir physical parameters and wave dispersion and attenuation

Active Publication Date: 2020-01-17
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the relationship between reservoir physical parameters and wave dispersion and attenuation is very complicated, and various mechanisms will affect dispersion and attenuation under certain conditions. Therefore, it is difficult to explain it with a single mechanical theory, and it is necessary to consider the mathematics under multiple physical mechanisms. -Physical model, and how to construct a mathematical-physical model under the multi-physics mechanism has become an important problem to be solved

Method used

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  • Method, device and equipment for processing wave propagation
  • Method, device and equipment for processing wave propagation
  • Method, device and equipment for processing wave propagation

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Embodiment 1

[0114] Such as figure 1 As shown, the embodiment of this specification provides a method for processing wave propagation. The execution body of the method may be a terminal device or a server, wherein the terminal device may be a terminal device such as a personal computer, or may be a mobile phone or a tablet computer, etc. Mobile terminal equipment. The server may be an independent server, or may be a server cluster composed of multiple servers. In order to improve the processing efficiency, the execution subject in the embodiments of this specification uses a server for illustration. For the case that the execution subject is a terminal device, refer to the following related content of the server for processing, and details will not be repeated here. The method specifically may include the following steps:

[0115] In step S102, when the fluid in the dense porous medium is equivalent to a power-law fluid, based on the constitutive relation of the power-law fluid satisfied...

Embodiment 2

[0132] Such as figure 2As shown, the embodiment of this specification provides a method for processing wave propagation. The execution body of the method may be a terminal device or a server, wherein the terminal device may be a terminal device such as a personal computer, or may be a mobile phone or a tablet computer, etc. Mobile terminal equipment. The server may be an independent server, or may be a server cluster composed of multiple servers. In order to improve the processing efficiency, the execution subject in the embodiments of this specification uses a server for illustration. For the case that the execution subject is a terminal device, refer to the following related content of the server for processing, and details will not be repeated here. The method specifically may include the following steps:

[0133] In step S202, when the fluid in the dense porous medium is equivalent to a power-law fluid, the velocity vector, viscosity coefficient, and power-law exponent ...

Embodiment 3

[0189] The above is the wave propagation processing method provided by the embodiment of this specification. Based on the same idea, the embodiment of this specification also provides a wave propagation processing device, such as Figure 11 shown.

[0190] The processing device for wave propagation includes: a dissipation function determination module 1101, a potential energy determination module 1102, a kinetic energy determination module 1103 and a model construction module 1104, wherein:

[0191] The dissipation function determination module 1101 is used to determine the fluid in the fluid-containing porous medium based on A dissipation function of non-Darcy flow, wherein the dissipation function includes petrophysical parameters related to the seepage of the fluid;

[0192] Potential Energy Determination Module 1102, for treating the solid skeleton in the dense porous medium and the immobile liquid as a viscoelastic body, and based on the viscoelastic stiffness coefficien...

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Abstract

Embodiments of the invention disclose a method, a device and equipment for processing wave propagation, wherein the method comprises the following steps of determining a dissipation function based onnon-Darcy flow in a fluid-containing porous medium on the basis of a constitutive relation of power-law fluid satisfied by fluid in a dense porous medium under the condition that the fluid in the dense porous medium is equivalent to the power-law fluid; taking a solid framework and non-flowing liquid in the dense porous medium as viscoelastic bodies, determining a potential energy function of thefluid-containing porous medium based on a viscoelastic stiffness coefficient, a strain invariant and volumetric strains of the solid framework and the fluid, and determining a kinetic energy functionof the fluid-containing porous medium based on the porosity, the average tortuosity of pores and pore throats in the dense porous medium, the densities of the solid and the fluid in the dense porous medium, and a fluid phase displacement and a solid phase displacement of the dense porous medium; and constructing a wave propagation model based on the non-Darcy flow according to the dissipation function, the potential energy function and the kinetic energy function of the fluid-containing porous medium.

Description

technical field [0001] This specification relates to the technical field of oil and gas seismic exploration, in particular to a wave propagation processing method, device and equipment. Background technique [0002] The wave propagation model can be regarded as a bridge between the physical parameters of oil and gas reservoirs and the characteristics of seismic waves. Establishing a wave propagation mathematical-physical model that can accurately describe reservoir characteristics is an important theoretical basis for the exploration and development of tight oil and gas resources. [0003] During the propagation of waves in fluid-containing porous media, obvious velocity dispersion and energy attenuation phenomena will occur, and the dispersion and attenuation are closely related to important parameters describing the reservoir (such as porosity, permeability, saturation, etc.). This phenomenon is mainly the result of the interaction between the porous medium and the fluid. ...

Claims

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Application Information

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IPC IPC(8): G01V1/28G01V1/36G01V1/30
CPCG01V1/282G01V1/306G01V1/36G01V2210/67
Inventor 张博雅杨顶辉
Owner TSINGHUA UNIV
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