JOURNAL ARTICLE

Study on the effect of morphology of anthracite coal containing through-fracture on CO2 enhanced coalbed methane recovery.

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

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Liu, Xinyuan; Zhang, Lei; Pan, Jiangzhong; Tian, Ye; Sun, Wenjibin; Tian, Shixiang 3 of 3

Abstract

This article investigates the influence of fracture morphology on CO₂-enhanced coalbed methane (CO₂-ECBM) recovery behaviors using anthracite coal samples with different through-fracture characteristics. The study finds that larger fracture surface areas reduce coal volume expansion during CO₂ adsorption but accelerate early expansion rates, while more uniform fracture distributions promote higher methane (CH₄) concentrations in tail gas during the pre-injection stage. Permeability changes during CO₂ injection are positively correlated with fracture surface area, with fractured coal samples exhibiting shorter CO₂ breakthrough times and distinct permeability phases compared to intact coal. Overall, fracture distribution uniformity has a greater impact on early methane production than fracture volume, whereas fracture volume more strongly influences methane output over the entire injection process.

Additional Information

  • Source:Physics of Fluids. 2024/11, Vol. 36, Issue 11, p1
  • Document Type:Article
  • Subject Area:Power and Energy
  • Publication Date:2024
  • ISSN:1070-6631
  • DOI:10.1063/5.0232674
  • Accession Number:181256398
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