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Permeability Coarsening Method Considering Interlayer Effect

A permeability and interlayer technology, applied in image data processing, 3D modeling, instruments, etc., can solve the problems of inability to transition, loss of interlayer information, etc., and achieve the effect of accurate seepage path

Inactive Publication Date: 2017-02-08
YANGTZE UNIVERSITY
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Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiency of the above-mentioned background technology, provide a kind of permeability coarsening method that considers the influence of interlayer, solve the interlayer information loss caused in the process of geological model coarsening, and the permeability in the fine geological model cannot be effectively Problems in effectively transitioning models to coarser models

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  • Permeability Coarsening Method Considering Interlayer Effect
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  • Permeability Coarsening Method Considering Interlayer Effect

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.

[0030] Figure 1 to Figure 3 The existing permeability coarsening method has been described in the background technology, and will not be repeated here.

[0031] see Figure 4 , the present invention considers the permeability coarsening method of interlayer influence, comprises the steps:

[0032] A. Establish a fine geological model, including interlayer and permeability models; and establish a corresponding coarser skeleton model; correspond the fine grid in the fine geological model to the coarser grid.

[0033] B. see Figure 5 , to judge the connectivity of the sand bodies inside the coarse grid and to number the connected sand bodies, the specific process is as follows:

[0034] 1) Number the connected sand bodies from the I direction: start from i=0, j...

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Abstract

The invention discloses a permeability coarsening method considering interlayer influence. The method comprises the following steps that A. fine grids in a fine geological model are corresponding to coarsening grids; B. connectivity of sand bodies in the internal part of the coarsening grids is judged and the connected sand bodies are numbered; C. shielding of different directions of the coarsening grids caused by an interlayer is judged; and D. a permeability parameter field is concretely coarsened according to the judgment result of shielding of different coarsening grids caused by the internal interlayer. A problem that a permeability model in the fine geological model cannot be effectively transferred to a coarsening model due to loss of interlayer information in the coarsening process of the geological module is solved by the method so that the method can be widely applied to the field of three-dimensional geological modeling.

Description

technical field [0001] The invention relates to the field of three-dimensional geological modeling, in particular to a permeability coarsening method considering the influence of interlayers. Background technique [0002] In the middle and late stages of oilfield development, the research on interlayers has become more and more detailed, and its influence on oil and gas migration has been paid more and more attention by developers. Many scholars have carried out research on interlayers to varying degrees. As a non-permeable medium, interlayers of different origins control the distribution of remaining oil to varying degrees due to reservoir heterogeneity. [0003] The seepage barrier and seepage difference caused by interlayers are directly reflected in the permeability in different directions. When establishing a geological model, fine research on permeability and interlayer distribution is required to effectively characterize them. The distribution thickness of the interl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/05
CPCG06T17/00
Inventor 张昌民李少华李君喻思羽
Owner YANGTZE UNIVERSITY