JOURNAL ARTICLE

Infiltration mechanism of clay minerals in coalbed methane wells using a compound acid plugging removal agent.

  • Published In: Physics of Fluids, 2025, v. 37, n. 5. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Zhang, Xitu; Hu, Shengyong; Feng, Guorui; Li, Guofu 3 of 3

Abstract

This article focuses on optimizing a compound acid unplugging removal agent to improve the infiltration and wetting of clay minerals that obstruct coalbed methane (CBM) production channels, using molecular simulation techniques on samples from the Wuxiang block in China. Among three surfactants studied—dodecyl dimethylaminoethyl lactone (BS-12), fatty alcohol polyoxyethylene ether (AEO), and dodecyl glucoside (APG)—BS-12 demonstrated superior molecular activity, polarity, and hydrogen bonding, resulting in enhanced wettability. Simulations revealed that BS-12 adsorbs horizontally on mineral surfaces, improving the dispersion of acids and reducing water molecule mobility, with the strongest wetting effects observed on goethite and quartz minerals. The study provides molecular-level insights into surfactant-mineral interactions, offering guidance for designing effective plugging removal agents to stimulate low-yield CBM wells.

Additional Information

  • Source:Physics of Fluids. 2025/05, Vol. 37, Issue 5, p1
  • Document Type:Article
  • Subject Area:Earth and Atmospheric Sciences
  • Publication Date:2025
  • ISSN:1070-6631
  • DOI:10.1063/5.0269957
  • Accession Number:185593479
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