Application of Low Pressure N<sub>2</sub> Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale

Delu Xie; Suping Yao; Rongjie Hu; Biao Liu

doi:doi:10.11648/j.ogce.20180606.12

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Application of Low Pressure N₂ Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale

Delu Xie, Suping Yao, Rongjie Hu, Biao Liu

Published in International Journal of Oil, Gas and Coal Engineering (Volume 6, Issue 6)

Received: 15 August 2018 Accepted: 29 August 2018 Published: 12 October 2018

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Abstract

Shale gas resources in transitional facies are important unconventional energy sources. In order to understand the seepage characteristics of shale reservoir, low pressure nitrogen adsorption experiment were applied to investigate the nanoscale pore structure and adsorption fractal characteristics of shale in Shanxi Formation. FHH fractal model was adopted to calculate the absorption pore fractal dimension values D and quantitatively confirm the relationship between fractal dimension values and pore parameters. Results show that distribution curve obtained by the desorption branch present pore size distribution ranges from 1.14 nm to 173.39 nm, micropores and macropores developed and concentrated, no obvious dominant peak in the mesopores (2-25 nm) with relatively uniform distribution. Fractal dimension values range from 2.42 to 2.81, indicating shale pore structure is complex and heterogeneous. Fractal dimension is positively correlated with specific surface area and total pore volume, and highly negatively correlated with the average pore diameter. Fractal dimension is also a characterization of buried depth, and there is a weak positive correlation between them. With the increase of buried depth, fractal dimension has an increasing trend. The study provides a new method to further understand the shale nanometer pore structural heterogeneity.

Published in	International Journal of Oil, Gas and Coal Engineering (Volume 6, Issue 6)
DOI	10.11648/j.ogce.20180606.12
Page(s)	134-141
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Low Pressure N₂ Adsorption Isotherms, Nanoscale Pore, Adsorption Characteristics, FHH Fractal Model, Shanxi Formation Shale

References

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APA Style

Delu Xie, Suping Yao, Rongjie Hu, Biao Liu. (2018). Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale. International Journal of Oil, Gas and Coal Engineering, 6(6), 134-141. https://doi.org/10.11648/j.ogce.20180606.12

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ACS Style

Delu Xie; Suping Yao; Rongjie Hu; Biao Liu. Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale. Int. J. Oil Gas Coal Eng. 2018, 6(6), 134-141. doi: 10.11648/j.ogce.20180606.12

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AMA Style

Delu Xie, Suping Yao, Rongjie Hu, Biao Liu. Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale. Int J Oil Gas Coal Eng. 2018;6(6):134-141. doi: 10.11648/j.ogce.20180606.12

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@article{10.11648/j.ogce.20180606.12,
  author = {Delu Xie and Suping Yao and Rongjie Hu and Biao Liu},
  title = {Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {6},
  number = {6},
  pages = {134-141},
  doi = {10.11648/j.ogce.20180606.12},
  url = {https://doi.org/10.11648/j.ogce.20180606.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20180606.12},
  abstract = {Shale gas resources in transitional facies are important unconventional energy sources. In order to understand the seepage characteristics of shale reservoir, low pressure nitrogen adsorption experiment were applied to investigate the nanoscale pore structure and adsorption fractal characteristics of shale in Shanxi Formation. FHH fractal model was adopted to calculate the absorption pore fractal dimension values D and quantitatively confirm the relationship between fractal dimension values and pore parameters. Results show that distribution curve obtained by the desorption branch present pore size distribution ranges from 1.14 nm to 173.39 nm, micropores and macropores developed and concentrated, no obvious dominant peak in the mesopores (2-25 nm) with relatively uniform distribution. Fractal dimension values range from 2.42 to 2.81, indicating shale pore structure is complex and heterogeneous. Fractal dimension is positively correlated with specific surface area and total pore volume, and highly negatively correlated with the average pore diameter. Fractal dimension is also a characterization of buried depth, and there is a weak positive correlation between them. With the increase of buried depth, fractal dimension has an increasing trend. The study provides a new method to further understand the shale nanometer pore structural heterogeneity.},
 year = {2018}
}

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TY  - JOUR
T1  - Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale
AU  - Delu Xie
AU  - Suping Yao
AU  - Rongjie Hu
AU  - Biao Liu
Y1  - 2018/10/12
PY  - 2018
N1  - https://doi.org/10.11648/j.ogce.20180606.12
DO  - 10.11648/j.ogce.20180606.12
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 134
EP  - 141
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20180606.12
AB  - Shale gas resources in transitional facies are important unconventional energy sources. In order to understand the seepage characteristics of shale reservoir, low pressure nitrogen adsorption experiment were applied to investigate the nanoscale pore structure and adsorption fractal characteristics of shale in Shanxi Formation. FHH fractal model was adopted to calculate the absorption pore fractal dimension values D and quantitatively confirm the relationship between fractal dimension values and pore parameters. Results show that distribution curve obtained by the desorption branch present pore size distribution ranges from 1.14 nm to 173.39 nm, micropores and macropores developed and concentrated, no obvious dominant peak in the mesopores (2-25 nm) with relatively uniform distribution. Fractal dimension values range from 2.42 to 2.81, indicating shale pore structure is complex and heterogeneous. Fractal dimension is positively correlated with specific surface area and total pore volume, and highly negatively correlated with the average pore diameter. Fractal dimension is also a characterization of buried depth, and there is a weak positive correlation between them. With the increase of buried depth, fractal dimension has an increasing trend. The study provides a new method to further understand the shale nanometer pore structural heterogeneity.
VL  - 6
IS  - 6
ER  -

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Author Information

Delu Xie

School of Earth Sciences and Engineering, Nanjing University, Nanjing, China
Suping Yao

School of Earth Sciences and Engineering, Nanjing University, Nanjing, China
Rongjie Hu

National Engineering Research Center of Coal Mine Water Hazard Controlling, Suzhou, China
Biao Liu

School of Earth Sciences and Engineering, Nanjing University, Nanjing, China

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APA Style

Delu Xie, Suping Yao, Rongjie Hu, Biao Liu. (2018). Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale. International Journal of Oil, Gas and Coal Engineering, 6(6), 134-141. https://doi.org/10.11648/j.ogce.20180606.12

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ACS Style

Delu Xie; Suping Yao; Rongjie Hu; Biao Liu. Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale. Int. J. Oil Gas Coal Eng. 2018, 6(6), 134-141. doi: 10.11648/j.ogce.20180606.12

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AMA Style

Delu Xie, Suping Yao, Rongjie Hu, Biao Liu. Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale. Int J Oil Gas Coal Eng. 2018;6(6):134-141. doi: 10.11648/j.ogce.20180606.12

Copy | Download

@article{10.11648/j.ogce.20180606.12,
  author = {Delu Xie and Suping Yao and Rongjie Hu and Biao Liu},
  title = {Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {6},
  number = {6},
  pages = {134-141},
  doi = {10.11648/j.ogce.20180606.12},
  url = {https://doi.org/10.11648/j.ogce.20180606.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20180606.12},
  abstract = {Shale gas resources in transitional facies are important unconventional energy sources. In order to understand the seepage characteristics of shale reservoir, low pressure nitrogen adsorption experiment were applied to investigate the nanoscale pore structure and adsorption fractal characteristics of shale in Shanxi Formation. FHH fractal model was adopted to calculate the absorption pore fractal dimension values D and quantitatively confirm the relationship between fractal dimension values and pore parameters. Results show that distribution curve obtained by the desorption branch present pore size distribution ranges from 1.14 nm to 173.39 nm, micropores and macropores developed and concentrated, no obvious dominant peak in the mesopores (2-25 nm) with relatively uniform distribution. Fractal dimension values range from 2.42 to 2.81, indicating shale pore structure is complex and heterogeneous. Fractal dimension is positively correlated with specific surface area and total pore volume, and highly negatively correlated with the average pore diameter. Fractal dimension is also a characterization of buried depth, and there is a weak positive correlation between them. With the increase of buried depth, fractal dimension has an increasing trend. The study provides a new method to further understand the shale nanometer pore structural heterogeneity.},
 year = {2018}
}

Copy | Download

TY  - JOUR
T1  - Application of Low Pressure N2 Adsorption on Shale Nanoscale Pore Structure: Examples from the Permian Shanxi Formation of Transitional Facies Shale
AU  - Delu Xie
AU  - Suping Yao
AU  - Rongjie Hu
AU  - Biao Liu
Y1  - 2018/10/12
PY  - 2018
N1  - https://doi.org/10.11648/j.ogce.20180606.12
DO  - 10.11648/j.ogce.20180606.12
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 134
EP  - 141
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20180606.12
AB  - Shale gas resources in transitional facies are important unconventional energy sources. In order to understand the seepage characteristics of shale reservoir, low pressure nitrogen adsorption experiment were applied to investigate the nanoscale pore structure and adsorption fractal characteristics of shale in Shanxi Formation. FHH fractal model was adopted to calculate the absorption pore fractal dimension values D and quantitatively confirm the relationship between fractal dimension values and pore parameters. Results show that distribution curve obtained by the desorption branch present pore size distribution ranges from 1.14 nm to 173.39 nm, micropores and macropores developed and concentrated, no obvious dominant peak in the mesopores (2-25 nm) with relatively uniform distribution. Fractal dimension values range from 2.42 to 2.81, indicating shale pore structure is complex and heterogeneous. Fractal dimension is positively correlated with specific surface area and total pore volume, and highly negatively correlated with the average pore diameter. Fractal dimension is also a characterization of buried depth, and there is a weak positive correlation between them. With the increase of buried depth, fractal dimension has an increasing trend. The study provides a new method to further understand the shale nanometer pore structural heterogeneity.
VL  - 6
IS  - 6
ER  -

Copy | Download