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Shale gas reservoir characteristic simulation method

A simulation method and technology for shale gas reservoirs, applied in 3D modeling, special data processing applications, image data processing, etc., can solve the problems of difficult and complicated seepage mechanism of free gas and adsorbed gas, and achieve the effect of simple operation

Inactive Publication Date: 2014-12-24
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a simulation study of the seepage law of adsorbed gas and free gas in shale gas in the shale gas medium in order to solve the existing research on detecting the difficult and complicated seepage mechanism of free gas and adsorbed gas in shale gas. Characteristic shale gas reservoir characteristic simulation method

Method used

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Embodiment 1

[0043] A shale gas reservoir characteristic simulation method, the simulation method comprising the following steps:

[0044] a) Select the shale medium, use synchrotron radiation to scan the shale medium, obtain the three-dimensional volume data of the shale medium, perform noise processing on the three-dimensional volume data of the shale medium, and then identify pores and solid skeletons, and use the pore tracking method to obtain pore channels , use the recursive method to obtain the connectivity between pores, and establish a connected network of pores; use the isosurface extraction method to visualize the pores; use the obtained pore wall data to reconstruct the pore wall surface using mathematical methods, and then reconstruct the shale gas occurrence The three-dimensional structure of the medium;

[0045] b) Three-dimensional virtual reconstruction of shale gas occurrence medium: determine the input and training images according to the multi-point statistical method, ...

Embodiment 2

[0051] A shale gas reservoir characteristic simulation method, the simulation method comprising the following steps:

[0052] a) Select the shale medium, use synchrotron radiation to scan the shale medium, obtain the three-dimensional volume data of the shale medium, perform noise processing on the three-dimensional volume data of the shale medium, and then identify pores and solid skeletons, and use the pore tracking method to obtain pore channels , use the recursive method to obtain the connectivity between pores, and establish a connected network of pores; use the isosurface extraction method to visualize the pores; use the obtained pore wall data to reconstruct the pore wall surface using mathematical methods, and then reconstruct the shale gas occurrence The three-dimensional structure of the medium;

[0053] b) Three-dimensional virtual reconstruction of shale gas occurrence medium: determine the input and training images according to the multi-point statistical method, ...

Embodiment 3

[0059] A shale gas reservoir characteristic simulation method, the simulation method comprising the following steps:

[0060] a) Select the shale medium, use synchrotron radiation to scan the shale medium, obtain the three-dimensional volume data of the shale medium, perform noise processing on the three-dimensional volume data of the shale medium, and then identify pores and solid skeletons, and use the pore tracking method to obtain pore channels , use the recursive method to obtain the connectivity between pores, and establish a connected network of pores; use the isosurface extraction method to visualize the pores; use the obtained pore wall data to reconstruct the pore wall surface using mathematical methods, and then reconstruct the shale gas occurrence The three-dimensional structure of the medium;

[0061] b) Three-dimensional virtual reconstruction of shale gas occurrence medium: determine the input and training images according to the multi-point statistical method, ...

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Abstract

The invention relates to a shale gas reservoir characteristic simulation method. The shale gas reservoir characteristic simulation method comprises the steps of focusing light into scanning lines in the horizontal direction through a reflection mirror of a mirror box by utilizing synchrotron radiation light sources, realizing vertical scanning through rotational vibration of the reflection mirror, and obtaining three-dimensional micro-structure data of a shale gas occurrence porous medium sample; then, carrying out three-dimensional reconstruction on the obtained three-dimensional micro-structure data, obtaining a percolation mechanism in unconventional shale gas occurrence medium through coupling computation by utilizing molecular dynamics and a lattice boltzmann method, and using a mathematical expression to express the percolation mechanism. According to the shale gas reservoir characteristic simulation method disclosed by the invention, a microcosmic percolation mechanism in the unconventional shale gas occurrence medium is researched by utilizing synchrotron radiation light and a computer technology, economy and environmental protection are realized, and the operation is simple; necessary and important evaluation parameters are provided for exploring and developing shale gas; an adsorption / analysis law of free gas and adsorbed gas in the shale gas can be simulated, and technical support is provided for mining the shale gas.

Description

technical field [0001] The invention relates to a shale gas reservoir characteristic simulation method, in particular to a shale gas reservoir characteristic simulation method for simulating and studying the seepage regularity characteristics of adsorbed gas and free gas in shale gas in a shale gas-bearing medium. Background technique [0002] Shale gas is a very important unconventional natural gas resource extracted from shale formations. The formation and enrichment of shale gas has its own unique characteristics, and it is often distributed in thicker and widely distributed shale hydrocarbons in the basin. in the source layer. Compared with conventional natural gas, shale gas development has the advantages of long mining life and long production cycle. Most gas shales are widely distributed, thick and generally contain gas, which enables shale gas wells to produce at a stable rate for a long time. gas. [0003] Shale gas has unique storage characteristics, and free gas...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
Inventor 许友生范世炜周鑫发朱剑平
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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