Synthesis comparative evaluation of hydrophobic polymer/surfactant fracturing fluids on methane adsorption-desorption and pore structure modifications in coal
Xiaoqiang Zhang
Jinghong Sun
Chuandong Liu
Qiang Sun
College of Environment and Resources,Xiangtan University,Xiangtan 411105,China
摘要：Traditional fracturing fluids often face limitations in achieving a balance between viscosity,gel-breaking capability,and formation protection,which poses a significant challenge for the development of optimally performing fluids in mining applications.This study introduces a novel hydrophobic polymer/surfactant composite(HSC)fracturing fluids synthesized by cross-linking hydrophobically modified hydroxypropyl guar gum(HMHPG)with a gemini-surfactant amide-based bis-quaternary ammonium salt(GS-A6).The performance characteristics were evaluated through comparative analysis with conventional fracturing fluids,focusing on viscosity,gel-breaking properties,methane adsorption-desorption behavior,and effects on coal pore structures.The HSC fracturing fluids,comprising 0.2％HMHPG+0.8％GS-A6,demonstrated superior performance metrics.The viscosity achieved was three times higher than that of the 0.8％GS-A6 fracturing fluids,while the gel-breaking time was reduced by 50％compared to the 0.2％HPG fracturing fluids.The HSC fracturing fluids exhibited reduced impact on methane adsorption and desorption in coal samples,with a 24％lower adsorption damage factor compared to HPG fracturing fluids.Analysis of coal pore structures revealed a decrease in fractal dimension Di,indicating surface smoothing effects due to controlled plugging.The developed HSC fracturing fluids demonstrates significant improvements in key performance parameters while minimizing formation damage.These findings provide valuable insights for advanc-ing fracturing fluid technology in mining applications and contribute to the optimization of hydraulic fracturing operations.
机标关键词：structureevaluationpolymeradsorptioncoalcomparativedesorptionfluids
论文发表日期：2025-12-31
在线出版日期：2026-01-30（本平台首次上网日期，不代表文献的发表时间）
页数：22( 109-130 )
英文信息