METHOD FOR PRODUCING A THREE-DIMENSIONAL CHARACTERISTIC MODEL OF A POROUS MATERIAL SAMPLE FOR ANALYSIS OF PERMEABILITY CHARACTERISTICS

摘要

The present invention relates to a method for producing a three-dimensional characteristic model of a rock sample for analysis of the spatial and physical characteristics of materials subsequent to the processing of images obtained by means of computer tomography. The method includes producing a three-dimensional tomographic image of a sample of material, identifying areas where the structure of the material is homogeneous, assigning a particular material density value to each such area, assigning a particular porosity value to each pixel, assigning a particular absolute permeability value to each pixel, forming a three-dimensional characteristic model on the basis of the porosity and permeability values of each pixel, and calculating the absolute permeability of the entire sample or of a portion thereof in any direction by means of computational fluid dynamics. The technical result is an increase in the precision and reliability of data obtained regarding the permeability characteristics of a sample of porous material, without the need to employ additional financial and labor resources.

主权项

1. Method for producing a three-dimensional characteristic model of a porous material sample for analysis of permeability characteristics, comprising acquisition of the three-dimensional tomographic image of the sample material, identification of regions with homogeneous material structure and assignment of specific densities to each such region, assignment of specific porosity values for each pixel, assignment of specific absolute permeability values for each pixel, formation of the characteristic three-dimensional model based on the porosity and permeability values for each pixel, calculating absolute permeability for the entire sample or its segment in any direction by computational fluid dynamics methods.