JOURNAL ARTICLE

Coupling effect of high temperature steam-liquid nitrogen cyclic treatment on pore iteration and fluid flow behavior in bituminous coal.

  • Published In: Physics of Fluids, 2024, v. 36, n. 11. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Li, He; Liao, Jiajun; Liu, Rui; Hong, Yidu; Lu, Jiexin; Cao, Jieyan 3 of 3

Abstract

This article focuses on the application of High Temperature Steam-Liquid Nitrogen Cyclic Treatment (HLCT) to enhance the pore structure and permeability of coal for improved coalbed methane extraction. Using hydrogen nuclear magnetic resonance (¹H NMR) technology, the study demonstrates that HLCT promotes the transformation of micropores into mesopores and macropores, significantly increasing porosity, free fluid saturation, and permeability—by up to 1621.72% after 15 cycles—while simplifying the pore structure as indicated by fractal dimension analysis. The synergistic thermal shock and freeze-thaw effects of HLCT create new fractures and improve pore connectivity, offering an environmentally friendly method to optimize coalbed methane recovery and support clean energy development.

Additional Information

  • Source:Physics of Fluids. 2024/11, Vol. 36, Issue 11, p1
  • Document Type:Article
  • Subject Area:Engineering
  • Publication Date:2024
  • ISSN:1070-6631
  • DOI:10.1063/5.0241057
  • Accession Number:181256211
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