Geological fracture layer PEBI grid processing method for oil reservoir numerical simulation

A technology of numerical simulation and processing method, applied in image data processing, 3D modeling, instruments, etc., to achieve the effect of good reliability, simple processing method and strong applicability

Active Publication Date: 2015-02-04
北京网格天地软件技术股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problem of generating and processing the two-dimensional PEBI grid on the three-dimensional geological fracture layer used for reservoir numerical simulation

Method used

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  • Geological fracture layer PEBI grid processing method for oil reservoir numerical simulation
  • Geological fracture layer PEBI grid processing method for oil reservoir numerical simulation
  • Geological fracture layer PEBI grid processing method for oil reservoir numerical simulation

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Embodiment Construction

[0037] Reservoir numerical simulation first needs to establish a geological structure model, and use modeling technology to establish a numerical calculation model on the basis of the geological structure model, and then carry out grid division of geological blocks. Then the geometric parameters of the grid, geological attribute parameters, and grid parameters of the well are output to the numerical simulator through the simulation interface, and the numerical simulation calculation is performed by the numerical simulator, and the numerical simulation results are visually displayed after the numerical simulation results are obtained. . figure 1 The process of reservoir numerical simulation is given.

[0038] Before the reservoir numerical simulation calculation, it is first necessary to subdivide the appropriate grid type for the geological surface to be calculated. A grid is a collection of small, simple geometric units that express a specific geometric area in the form of a...

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Abstract

The invention discloses a geological fracture layer PEBI grid processing method for oil reservoir numerical simulation. A growth point set of PEBI grids is established by using a polygonal grid on an input geological fracture layer model as a background grid, regular growth points are arranged around the features such as complicated geological fracture boundary, vertical well point and horizontal well trajectory, and PEBI grids generated around the growth points by a local search method are provided by using the background grid as index. The PEBI grids have the characteristics of growth point connection and interface perpendicular bisection, can meet the requirement of oil reservoir numerical simulation computation on the geological fracture layer model, and can be geometrically and topologically consistent with the input geological fracture layer in a three-dimensional space. The method is simple, easy to implement, highly reliable, and highly applicable to complex geological fracture layers. High-precision oil reservoir numerical simulation computation can be carried out easily on the basis.

Description

technical field [0001] The present invention relates to the fields of computational geometry, computer graphics, mathematical geology, three-dimensional geological modeling, and reservoir numerical simulation and calculation. The two-dimensional PEBI grid on the three-dimensional geological fracture layer model calculated by numerical simulation of the reservoir has the same geometric and topological characteristics as the three-dimensional geological fault layer. Specifically, it involves the calculation of the position of the cell growth point, the generation of PEBI grid cells, the processing of constraints such as points and boundaries, and the optimization of the quality and scale of cells. Background technique [0002] Reservoir numerical simulation is an effective tool to predict reservoir performance under various production conditions by combining physics, mathematics, reservoir engineering and computer programs. Through reservoir numerical simulation, a reasonable ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/30
CPCG06T17/05G06T17/30
Inventor 孟宪海魏亚楠丁晓燕杨钦
Owner 北京网格天地软件技术股份有限公司
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