Published

2018-01-01

Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales

Influencia de la composición de lutitas negras en la absorción de metano y el contenido de gas: implicaciones para el almacenamiento de las lutitas negras de Longmaxi

DOI:

https://doi.org/10.15446/esrj.v22n1.70539

Keywords:

Shale, Methane, Adsorption, TOC, Sichuan, (en)
lutitas, metano, adsorción, Carbono Orgánico Total, (es)

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Authors

  • Haihua Zhu
  • Tingshan Zhang
  • Jun Lang
  • Jianli Zeng
  • Xing Liang
  • Yong He
  • Gaocheng Wang
  • Junjun Li

The influence of shale composition on methane adsorption capability and gas content is investigated using 14 samples from Well YS8 in the southern Sichuan Basin, China. The results show that the Langmuir adsorption capacity of the Longmaxi shale is mainly a function of the total organic carbon (TOC) content. When TOC is ~1.1%, 50% CH4 is adsorbed onto the surface of the organic matter. The mineral content has limited control on the adsorption capacity of the Longmaxi shales. Organic matter is also a major control on gas content when TOC content is <1.0%. When TOC is >1.0%, gas content remains constant, indicating that gas preservation is more important than gas generation and rock adsorption capacity. Scatter plots of TOC versus gas content and, Langmuir adsorption capacity shows that when TOC is <2.0%, CH4 occurs both as free and absorbed gas, and CH4 occurs mainly as absorbed gas when TOC is >2.0%.

La influencia de la composición de lutitas en la capacidad de absorción del metano y el contenido de gas se analiza en este trabajo a partir de 14 muestras del pozo YS8 en la cuenca de Sichuan, al suroeste de China. Los resultados muestran que la capacidad de absorción Langmuir para las lutitas de Longmaxi es principalmente una función del contenido de Carbono Orgánico Total (TOC, del inglés Total Organic Carbon). Cuando el índice TOC es ~1.1%, el 50 % del CH4 (capacidad máxima de absorción de la función Langmuir) es absorbido por la superficie de materia orgánica. El contenido mineral tiene un control limitado en la capacidad de absorción de las lutitas de Longmaxi. La materia orgánica también tiene un control mayor en el contenido de gas cuando el índice TOC es <1.0 %. Cuando el TOC es >1.0 %, el contenido del gas es constante, lo que indica que la preservación del gas es más importante que la generación del gas, y la capacidad de absorción de la roca. Diagramas de dispersión del TOC frente al contenido de Gas y de la capacidad de absorción Langmuir muestran que el TOC es <2.0 %, que el CH4 se alcanza tanto en gas libre como en gas absorbido y que este ocurre principalmente cuando el gas absorbido tiene un nivel TOC de >2.0 %.

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How to Cite

APA

Zhu, H., Zhang, T., Lang, J., Zeng, J., Liang, X., He, Y., Wang, G. and Li, J. (2018). Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales. Earth Sciences Research Journal, 22(1), 59–63. https://doi.org/10.15446/esrj.v22n1.70539

ACM

[1]
Zhu, H., Zhang, T., Lang, J., Zeng, J., Liang, X., He, Y., Wang, G. and Li, J. 2018. Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales. Earth Sciences Research Journal. 22, 1 (Jan. 2018), 59–63. DOI:https://doi.org/10.15446/esrj.v22n1.70539.

ACS

(1)
Zhu, H.; Zhang, T.; Lang, J.; Zeng, J.; Liang, X.; He, Y.; Wang, G.; Li, J. Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales. Earth sci. res. j. 2018, 22, 59-63.

ABNT

ZHU, H.; ZHANG, T.; LANG, J.; ZENG, J.; LIANG, X.; HE, Y.; WANG, G.; LI, J. Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales. Earth Sciences Research Journal, [S. l.], v. 22, n. 1, p. 59–63, 2018. DOI: 10.15446/esrj.v22n1.70539. Disponível em: https://revistas.unal.edu.co/index.php/esrj/article/view/70539. Acesso em: 23 apr. 2024.

Chicago

Zhu, Haihua, Tingshan Zhang, Jun Lang, Jianli Zeng, Xing Liang, Yong He, Gaocheng Wang, and Junjun Li. 2018. “Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales”. Earth Sciences Research Journal 22 (1):59-63. https://doi.org/10.15446/esrj.v22n1.70539.

Harvard

Zhu, H., Zhang, T., Lang, J., Zeng, J., Liang, X., He, Y., Wang, G. and Li, J. (2018) “Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales”, Earth Sciences Research Journal, 22(1), pp. 59–63. doi: 10.15446/esrj.v22n1.70539.

IEEE

[1]
H. Zhu, “Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales”, Earth sci. res. j., vol. 22, no. 1, pp. 59–63, Jan. 2018.

MLA

Zhu, H., T. Zhang, J. Lang, J. Zeng, X. Liang, Y. He, G. Wang, and J. Li. “Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales”. Earth Sciences Research Journal, vol. 22, no. 1, Jan. 2018, pp. 59-63, doi:10.15446/esrj.v22n1.70539.

Turabian

Zhu, Haihua, Tingshan Zhang, Jun Lang, Jianli Zeng, Xing Liang, Yong He, Gaocheng Wang, and Junjun Li. “Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales”. Earth Sciences Research Journal 22, no. 1 (January 1, 2018): 59–63. Accessed April 23, 2024. https://revistas.unal.edu.co/index.php/esrj/article/view/70539.

Vancouver

1.
Zhu H, Zhang T, Lang J, Zeng J, Liang X, He Y, Wang G, Li J. Influence of black shale composition on methane adsorption and gas content: Implications for gas storage in the Longmaxi black shales. Earth sci. res. j. [Internet]. 2018 Jan. 1 [cited 2024 Apr. 23];22(1):59-63. Available from: https://revistas.unal.edu.co/index.php/esrj/article/view/70539

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2. Chao Wu, Binbin Sun, Mi Tian, Xiaomeng Cheng, Dong Liu, Yining Zhou. (2024). Enrichment Characteristics and Ecological Risk Assessment of Heavy Metals in a Farmland System with High Geochemical Background in the Black Shale Region of Zhejiang, China. Minerals, 14(4), p.375. https://doi.org/10.3390/min14040375.

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