Pore and pore throat identification system and method based on three-dimensional core scanning image
A technology of scanning images and identification methods, applied in the field of 3D core scanning images, can solve the problems of difficult reconstruction, low calculation accuracy, limited representation of calculation results, etc., to shorten the time, improve the accuracy, and reduce the reconstruction data. amount of effect
Inactive Publication Date: 2019-08-16
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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[0004] In the existing 3D core scanning image processing, the amount of 3D reconstruction data is large and the reconstruction is difficult; at the same time, the existing core permeability simulation calculation methods have low calculation accuracy, long calculation time, complex simulation methods and limited representativeness of calculation results And other issues
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[0053] In order to further understand the content, features and effects of the present invention, the following examples are given, and detailed descriptions are given below with reference to the accompanying drawings.
[0054] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0055] Such as figure 1 As shown, the pore and pore throat identification method based on the three-dimensional core scanning image provided by the present invention comprises the following steps:
[0056] S101, using a CT scanner to collect rock core image data through the rock core image acquisition module;
[0057] S102, the central control module uses image processing software to perform noise reduction filtering and enhancement processing on the collected images through the image processing module;
[0058] S103, using an extraction program to extract position information of pores, pore throats, and skeletons from the collecte...
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The invention belongs to the technical field of three-dimensional core scanning images, and discloses a pore and pore throat recognition system and method based on a three-dimensional core scanning image. The method comprises steps of collecting rock core image data by using a CT scanner, carrying out noise reduction filtering and enhancement processing on the acquired image; extracting position information of pores, pore throats and skeletons from the acquired image; performing three-dimensional reconstruction processing on the acquired rock core image by using a three-dimensional reconstruction algorithm; constructing a rock core three-dimensional model according to the acquired image by utilizing three-dimensional software; marking corresponding position information of the three-dimensional core model according to the extracted information by using a marking program; and carrying out simulation calculation on the permeability of the rock core by utilizing a simulation program. Fluidflow can be kept smooth all the time, mass force is adopted for driving the fluid to flow, and fluid flow can be balanced rapidly; the method for calculating the core permeability by using digital core simulation not only can improve the core permeability calculation accuracy, but also can shorten the simulation calculation time.
Description
technical field [0001] The invention belongs to the technical field of three-dimensional rock core scanning images, in particular to a system and method for identifying pores and pore throats based on three-dimensional rock core scanning images. Background technique [0002] Digital core technology is an effective method of core analysis that has emerged in recent years. It has been widely used in the field of core analysis such as conventional sandstone and carbonate rock, and has achieved great success. The basic principle is based on two-dimensional scanning electron microscope images or three-dimensional CT scanning images, using computer image processing technology, and completing digital core reconstruction through certain algorithms. Digital core modeling methods can be divided into two categories: physical experiment methods and numerical reconstruction methods. The physical experiment method uses high-power optical microscope, scanning electron microscope or CT ima...
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IPC IPC(8): G06K9/00G06T17/00
CPCG06T17/00G06V20/64
Inventor 况昊谭先锋王佳达雪娟吴越肖燚王钧民周润驰
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY