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Method and apparatus for calculating seismic wave characteristic information of random porous media model

A technology of random pores and seismic waves, applied in the field of geophysical exploration, can solve the problem of not considering model errors, and achieve the effect of improving accuracy

Active Publication Date: 2016-05-25
PETROCHINA CO LTD
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Problems solved by technology

However, in the prior art, the error caused by the finiteness of the model and the statistical characteristic information of each elastic parameter of the rock are not considered to directly make theoretical assumptions.

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  • Method and apparatus for calculating seismic wave characteristic information of random porous media model
  • Method and apparatus for calculating seismic wave characteristic information of random porous media model
  • Method and apparatus for calculating seismic wave characteristic information of random porous media model

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Embodiment Construction

[0034] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0035] The specific implementation of the embodiment of the present application will be described in detail below with several specific examples.

[0036] An embodiment of a method for calculating seismic wave characteristic information of a random porous medium model in the present application will be firstly introduced below. figure 1It i...

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Abstract

The embodiment of the application provides a method and apparatus for calculating seismic wave characteristic information of a random porous media model. The method comprises: pretreatment is carried out on a rack sample and statistic characteristic information of an elastic parameter of the rock sample is obtained according to rock sample analysis data after the pretreatment; a random filed is established based on the statistic characteristic information; calculation is carried out to obtain a random porous media effective longitudinal wave modulus of saturated fluid; and according to the random porous media effective longitudinal wave modulus of saturated fluid, calculation is carried out to obtain seismic wave characteristic information. According to the technical scheme, the seismic wave characteristic information, including velocity dispersion and attenuation of the seismic wave, of the random porous media model can be calculated accurately and the velocity dispersion and attenuation information can reflect the influence on the seismic wave by the porous fluid effectively, so that the support can be provided for improving precision of the seismic quantitative interpretation.

Description

technical field [0001] The invention relates to the technical field of geophysical exploration, in particular to a method and device for calculating seismic wave characteristic information of a random porous medium model. Background technique [0002] The existence of fluid in rock pores will lead to the velocity dispersion and attenuation of seismic waves. This velocity dispersion and attenuation information can reflect the influence of pore fluid on seismic waves, thus providing support for improving the accuracy of seismic quantitative interpretation. Generally, this velocity dispersion and attenuation will vary with the distribution of the pore fluid group in the rock. The flow of rock pore fluid, especially the flow of fluid between the patchy fluid regions in partially saturated rock will directly cause the acceleration of seismic wave velocity dispersion and attenuation. Therefore, how to characterize the distribution state of fluid in rock and its influence on the e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
CPCG01V1/30
Inventor 未晛曹宏杨志芳晏信飞卢明辉李晓明
Owner PETROCHINA CO LTD
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