Quantitative Analysis of Micron-Scale and Nano-Scale Pore Throat Characteristics of Tight Sandstone Using Matlab
Abstract
:1. Introduction
2. Materials and Methods
2.1. Geological Setting and Samples
2.2. Procedures
3. Results
3.1. Physical Properties
3.2. Pore Types and Pore Throat Characteristics
3.2.1. Micron-Scale Pores
3.2.2. Nano-Scale Pore Throats
4. Discussions
4.1. The Effect of the Characterization Parameters on Reservoir Properties
4.2. Quantitative Analysis Accuracy Using Matlab
4.2.1. Error
4.2.2. Color Space
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Analysis Method | Advantages | Disadvantages |
---|---|---|
FIB(Focused Ion beam) | 3D pore space distribution and characterization | Lack of specific point of the reservoir |
X-CT (X-ray computed tomography) | ||
SEM | 2D pore throat distribution | The whole pore throat distribution |
High resolution 3D model | ||
High resolution 2D image | ||
Nuclear magnetic resonance | Accurate porosity and pore throat distribution | Main range under 10 mm |
Gas adsorption | Specific surface area | Micron pore |
Pore radius size | ||
High pressure mercury injection | Porosity | Main range from 3.6–1 mm pores |
Pore throat radius |
Characteristic Parameter of Pore-Throat | Permeability | Porosity |
---|---|---|
Average Pore Throat Radius/μm | +0.693 | −0.080 |
Skewness | +0.014 | −0.001 |
Sorting Coefficient | +0.702 | −0.005 |
Median Pore Throat Radius/μm | +0.445 | +0.264 |
Median Pressure (MPa) | +0.169 | +0.145 |
Average Pore Throat Coordination Number | +0.856 | +0.217 |
Average Pore Radius/μm | +0.021 | +0.375 |
Pore Throat Ratio | −0.448 | −0.007 |
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Jiu, B.; Huang, W.; He, M.; Lv, C.; Liang, F. Quantitative Analysis of Micron-Scale and Nano-Scale Pore Throat Characteristics of Tight Sandstone Using Matlab. Appl. Sci. 2018, 8, 1272. https://doi.org/10.3390/app8081272
Jiu B, Huang W, He M, Lv C, Liang F. Quantitative Analysis of Micron-Scale and Nano-Scale Pore Throat Characteristics of Tight Sandstone Using Matlab. Applied Sciences. 2018; 8(8):1272. https://doi.org/10.3390/app8081272
Chicago/Turabian StyleJiu, Bo, Wenhui Huang, Mingqian He, Chenhang Lv, and Fei Liang. 2018. "Quantitative Analysis of Micron-Scale and Nano-Scale Pore Throat Characteristics of Tight Sandstone Using Matlab" Applied Sciences 8, no. 8: 1272. https://doi.org/10.3390/app8081272