Method and device of digital rock core reconstruction

Abstract

The embodiment of the invention discloses a method and a device of digital rock core reconstruction. The method comprises steps of acquiring a rock core training image, and based on a preset data template and a rock core training image, establishing a searching table, wherein the searching table comprises multiple independent nodes, one node corresponds to node data and the node data comprises condition probability statistical information of one kind of structure features corresponding to the preset data template in the rock core training image; according to the preset data template, determining a first structure characteristic corresponding to a first to-be-simulated point place in a to-be-reconstructed region related to the rock core training image, an acquiring condition probability statistical information of the first structure characteristic from the searching table; based on the condition probability statistical information of the first structure characteristic, determining an attribute value at the first to-be-simulated point place; and according to the attribute value at the first to-be-simulated point place determining a rock core image of the to-be-reconstructed region. According to the invention, the efficiency of the digital rock core reconstruction can be improved.

Description

Technical field [0001] This application relates to the field of rock physics numerical simulation technology, and in particular to a method and device for digital core reconstruction. Background technique [0002] Digital core reconstruction methods mainly include physical experiment methods and numerical reconstruction methods. The main process of the physical experiment method is to use high-precision experimental equipment such as scanning electron microscope and focused ion beam microscope to obtain two-dimensional images at different positions of the core, and use three-dimensional reconstruction algorithms to integrate these two-dimensional images to obtain a three-dimensional digital core. Generally, in the process of establishing digital cores using physical experimental methods, researchers need to spend a long time preparing and scanning two-dimensional slices, and the experimental equipment used is relatively expensive. As a result, the actual application of physical ...

AI Technical Summary

Problems solved by technology

[0004] The inventors have found that there are at least the following problems in the prior art: For core training images with larger pixels, there may be more types of structural features obtained, which may lead to a more complex search tree structure

In this way, in the process of digital core reconstruction using the search tree structure, it may lead to a large amount of calculation, which may affect the efficiency of digital core reconstruction

Images