Researches on the Pore Permeability of Core Sample Based on 3D
Micro-CT Images and Pore-scale Structured Element Models

doi:10.11885/j.issn.1674-5086.2015.04.03.03

Abstract

Abstract:

Pore structure feature of rocks is one of the major factors which affect the reservoir storage capacity of fluids（oil，
gas and water）and the exploitation of oil and gas resources. A better understanding of pore structure characteristics is of great
significance in increasing oil and gas production and improving recovery efficiency. Based on the microscopic images of real
rocks，microscopic pore structure models are able to reproduce the complex structure of natural rock pores. On the basis of
three-dimensional CT image and segmentation technology，data of the rock porosity and pore size distribution are obtained in
this paper by Matlab programming. Furthermore，a structured grid model which reflects the pore morphology of the original
rock sample is constructed. Based on that，the permeability of the rock sample is obtained. The simulation results of the porosity
and permeability agree well with the experimental results.

Key words: Micro-CT images of core sample, porosity, pore diameter distribution, permeability, structured element model

Song Rui1, Liu Jianjun1，2*, Li Guang1. Researches on the Pore Permeability of Core Sample Based on 3D
Micro-CT Images and Pore-scale Structured Element Models[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2015.04.03.03.

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