Reservoir stratum rock core multi-organizational model constructing method based on Micro-CT technology

A construction method and multi-organization technology, applied in 3D modeling, image data processing, instruments, etc., can solve the problem that core modeling technology has no related applications

Active Publication Date: 2016-01-27
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

At present, there are also studies on the use of Micro-CT scanning images to reconstruct the core model in 3D and use it for the calculation of physical parameters, and the research on core structure reconstruction and numerical analysis also exists, but the multi-tissue core modeling technology based on Micro-CT images There are no related applications yet

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  • Reservoir stratum rock core multi-organizational model constructing method based on Micro-CT technology
  • Reservoir stratum rock core multi-organizational model constructing method based on Micro-CT technology
  • Reservoir stratum rock core multi-organizational model constructing method based on Micro-CT technology

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Embodiment Construction

[0058] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0059] Such as figure 1 Shown is a flowchart of a method for constructing a multi-tissue model of a reservoir rock core based on Micro-CT technology provided by an embodiment of the present invention. The method first performs image processing on the Micro-CT image of the rock core, and the image processing includes noise reduction and segmentation. Obtain the extracted data of the multi-tissue core, then use the MarchingCubes algorithm to build the core surface model, and finally calculate the core tetrahedron model through the constrained Delaunay tetrahedron subdivision algorithm. The size, position, relative positional relationship between each organization and the digitized parameter information of each organization are used to divide the boundaries of each organization, accurately find the tetrahedral grid of each organization, and establish its mu...

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Abstract

The invention relates to the reservoir stratum rock core multi-organizational module constructing method based on Micro-CT technology. With the method, a Micro-CT scanning image of a rock core is used as basis; a tetrahedron model of the rock core is reconstructed through methods of image processing, surface module construction and tetrahedron partition; and a multi-organizational rock core model is established. By adopting the established multi-organizational model, the structure of the reservoir stratum rock core can be restored effectively; the accuracy of the construction result of the reservoir stratum rock core is improved; the multi-organizational model constructing method lays the foundation to the value analysis and simulation of the reservoir stratum rock core in the next step; and the method is suitable for constructing multi-organizational models of reservoir stratum rock core with complex structures and many details.

Description

technical field [0001] The invention relates to model construction technology, in particular to a method for establishing a three-dimensional solid model based on the real structure of reservoir rock cores. Background technique [0002] Reservoir rock is a natural heterogeneous material, which can be regarded as a heterogeneous multi-organization composite material composed of different mineral particles, mica and cracks with complex geometric shapes. There are great differences in the physical and mechanical properties of various tissues, and the interaction between various tissues directly affects the macroscopic mechanical properties and stress distribution characteristics of reservoir rocks. During ordinary petrophysical tests, it is difficult for researchers to observe and study the expansion of cracks inside rocks and determine the stress between various tissues. By constructing multi-tissue models of reservoir rocks, it is helpful for researchers to have a more in-de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/05
Inventor 牛文杰徐箐箐王晓斌吕长荣郑士坡刘赫徐国慧
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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