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Method for establishing fracture-vuggy reservoir seismic numerical model

A numerical model and establishment method technology, which is applied in the field of seismic numerical model establishment of fracture-cavity reservoirs, can solve the problems of inability to obtain accurate and reliable data, and inability to accurately describe fracture-cavity reservoirs, etc.

Inactive Publication Date: 2015-10-14
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The current wave field simulation modeling method for fractures or holes cannot accurately describe fracture-cavity reservoirs with coexisting fractures and holes, making it impossible to obtain accurate and reliable data for seismic wave field simulation

Method used

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  • Method for establishing fracture-vuggy reservoir seismic numerical model
  • Method for establishing fracture-vuggy reservoir seismic numerical model
  • Method for establishing fracture-vuggy reservoir seismic numerical model

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[0051] Hereinafter, the implementation of the present invention will be described in detail with reference to the accompanying drawings and embodiments, so as to fully understand how the present invention applies technical means to solve technical problems and achieve the realization process of technical effects and implement them accordingly. It should be noted that, as long as there is no conflict, each embodiment of the present invention and each feature in each embodiment can be combined with each other, and the technical solutions formed are all within the protection scope of the present invention.

[0052] figure 1 Shows a flowchart of the method for establishing a seismic numerical model of fractured-vuggy reservoirs in this embodiment.

[0053] Such as figure 1 As shown, first, in the step S101 of establishing the pore distribution model, the background medium area and the pore area of ​​the fracture-vuggy reservoir are determined based on the random medium theory, and the p...

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Abstract

The invention discloses a method for establishing a fracture-vuggy reservoir seismic numerical model. The method comprises the steps of a step of establishing a hole distribution model, wherein the hole distribution model of a to-be-analyzed fracture-vuggy reservoir is established based on a random medium theory, and the hole distribution model comprises a background medium area and a hole area; a step of selecting a fracture elasticity parameter, wherein the fracture elasticity parameter of the to-be-analyzed fracture-vuggy reservoir is determined according to the geometrical parameter of the crack of the to-be-analyzed fracture-vuggy reservoir; and a step of establishing the fracture-vuggy reservoir model, wherein the fracture elasticity parameter is endowed to the background medium area, and the known elasticity parameter of a hole inclusion matter to the hole area, and obtaining the seismic numerical model of the to-be-analyzed fracture-vuggy reservoir. The method of the invention has advantages of representing the anisotropic characteristic of the fracture medium of the fracture-vuggy reservoir, representing the scattering characteristic of a random hole in the reservoir, describing the fracture-vuggy reservoir in which fractures and holes coexist, and realizing an important meaning in researching and analyzing the fracture-vuggy reservoir and oil gas exploration.

Description

Technical field [0001] The invention relates to the technical field of oil and gas geophysics, in particular to a method for establishing a seismic numerical model of fractured-vuggy reservoirs. Background technique [0002] Seismic wave field simulation is the foundation of seismic exploration and seismology. Seismic wave field simulation is to simulate and study the propagation law of seismic waves in the underground medium under the assumption that the underground medium structure model and the corresponding physical parameters are known, and to calculate the seismic values ​​that should be observed at various observation points on the ground or underground. Earthquake simulation method. Seismic wave field simulation is not only widely used in petroleum, natural gas, heavy metal and non-metal mineral resources and engineering, and environmental geophysics, but also in earthquake disaster prediction, seismic zone division, and research on crustal structure and internal structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 魏修成刘炯季玉新
Owner CHINA PETROLEUM & CHEM CORP
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