Quantitative Characterization of 3D Pore Structure in Porous Limestone

2013 ◽  
Vol 671-674 ◽  
pp. 1830-1834
Author(s):  
Yun Tao Ji ◽  
Patrick Baud ◽  
Teng Fong Wong ◽  
Li Qiang Liu
Keyword(s):  
Pore Structure ◽  
Morphological Processing ◽  
Equivalent Diameter ◽  
Micro Ct ◽  
Quantitative Characterization ◽  
3D Images ◽  
Local Porosity ◽  
Multi Level ◽  
Indiana Limestone

The pore structure in intact and inelastically deformed Indiana limestone have been studied using x-ray microtomography imaging. Guided by detailed microstructural observations and using Multi-level Otsu’s thresholding method, the 3D images acquired at voxel side length of 4 μm were segmented into three domains: solid grains, macropores and an intermediate zone dominated by microporosity. Local Porosity can be defined to infer the porosity of each voxel. The macropores were individually identified by morphological processing and their shape quantified by their sphericity and equivalent diameter. With this segmentation, we obtained statistics on macropores on intact and deformed Indiana limestone which shows that inelastic compaction was followed by a significant reduction in the number of macropores. And also our results revealed the great potentiality to produce a quantitative analysis on porous material with the aid of micro CT images.

scholarly journals Quantitative Characterization of Heterogeneity in Different Reservoir Spaces of Low-Permeability Sandstone Reservoirs and Its Influence on Physical Properties

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Fengjuan Dong ◽  
Na Liu ◽  
Zhen Sun ◽  
Xiaolong Wei ◽  
Haonan Wang ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Pore Structure ◽  
Fractal Theory ◽  
Fractal Dimensions ◽  
Low Permeability ◽  
Quantitative Characterization ◽  
Average Value ◽  
Porosity And Permeability ◽  
Sandstone Reservoirs

The complex pore structure of low-permeability sandstone reservoir makes it difficult to characterize the heterogeneity of pore throat. Taking the reservoir of Sanjianfang formation in QL oilfield as an example, the fractal dimension of different storage spaces is calculated by using fractal theory based on casting thin section, scanning electron microscope, and high-pressure mercury injection, and the correlation between porosity, permeability, and contribution of different storage space permeabilities is analyzed. The results show that the reservoir of Sanjianfang formation in QL oilfield mainly develops small pores, fine pores, and micropores, and the fractal dimension of micropore structure is between 2.6044 and 2.9982, with an average value of 2.8316. The more complex the pore structure is, the stronger the microheterogeneity is. The higher the fractal dimension, the more complex the pore structure and the smaller the porosity and permeability. The fractal dimensions of small pores, fine pores, and micropores increase successively with the decrease in pore radius, and the microstructure heterogeneity of large pores is weaker than that of small pores. It provides a theoretical basis for the exploration and development of low-permeability sandstone reservoirs.

scholarly journals QUANTITATIVE CHARACTERIZATION OF THREE-DIMENSIONAL GRAIN SHAPES BY X-RAY MICRO CT AT SPRING-8

2014 ◽  
Vol 70 (2) ◽  
pp. 265-274 ◽  
Author(s):  
Jun KATAGIRI ◽  
Takashi MATSUSHIMA ◽  
Hidetaka SAOMOTO ◽  
Mori UTSUNO ◽  
Yasuo YAMADA
Keyword(s):  
Three Dimensional ◽  
Micro Ct ◽  
Quantitative Characterization ◽  
X Ray

scholarly journals Quantitative characterization of pore structure of several biochars with 3D imaging

2017 ◽  
Vol 25 (26) ◽  
pp. 25648-25658 ◽  
Author(s):  
Jari Hyväluoma ◽  
Sampo Kulju ◽  
Markus Hannula ◽  
Hanne Wikberg ◽  
Anssi Källi ◽  
...  
Keyword(s):  
Pore Structure ◽  
3D Imaging ◽  
Quantitative Characterization

scholarly journals 2D and 3D pore structure characterization of bi-layered porous polyethylene barrier membrane using SEM and micro-CT

ScienceAsia ◽  
2019 ◽  
Vol 45 (2) ◽  
pp. 159 ◽  
Author(s):  
Ji-Chuan Song ◽  
Jintamai Suwanprateeb ◽  
Daraporn Sae-lee ◽  
Teerapan Sosakul ◽  
Waranuch Pitiphat ◽  
...  
Keyword(s):  
Pore Structure ◽  
Structure Characterization ◽  
Micro Ct ◽  
Porous Polyethylene ◽  
Barrier Membrane ◽  
2D And 3D

Characterization of oil shale pore structure before and after pyrolysis by using X-ray micro CT

Fuel ◽  
2013 ◽  
Vol 107 ◽  
pp. 547-554 ◽  
Author(s):  
P. Tiwari ◽  
M. Deo ◽  
C.L. Lin ◽  
J.D. Miller
Keyword(s):  
Pore Structure ◽  
Oil Shale ◽  
Micro Ct ◽  
X Ray ◽  
Before And After
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