氧化诱导的微纳米机械性能和微观透性增强机制的煤炭
Honggao Xie1,2, Xijian Li1,2,3, Hao Sui3
1College of Mining, Guizhou University, Guiyang 550025, China.
Langmuir : the ACS journal of surfaces and colloids
|February 13, 2024
概括
酸性处理放松了煤矿物质,增加了孔隙复杂性和体积. 这使得煤层的透率提高了近三倍,改善了用于在低透性水库中提取的甲迁移.
科学领域:
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
- 石油工程是石油工程中的一个.
背景情况:
- 煤层中的水力压裂可能受到孔隙堵塞问题的阻碍.
- 探索酸性溶液以提高透性并应对这些挑战.
研究的目的:
- 研究混合酸对煤层微纳米机械性能和透性的影响.
- 了解酸性处理如何影响煤炭微观结构和甲迁移.
主要方法:
- 原子力显微镜 (AFM) 和扫描电子显微镜 (SEM) 用于表面形态.
- 对于微纳米机械特征的AFM机械模式.
- 低温吸附,侵入孔径测量,以及孔隙结构分析的碎形理论.
主要成果:
- 酸化溶解了表面矿物质,增加了孔隙复杂性和放松了煤炭结构.
- 微纳米机械性能减弱,弹性模量降低高达28.78%.
- 毛孔体积显著增加,毛孔大小分布转移到更大的毛孔,透率增加了近三倍.
结论:
- 酸性处理降低了微纳米级煤炭的机械强度.
- 微观结构的改变促进了甲的扩散和透,为煤床甲的提取提供了理论指导.
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