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关于高压下不同表面活性剂的煤炭可湿性和甲脱特性研究

Xinyi Chen¹, Bin Shi^1,2,3, Yunxing Cao^1,2,3,4,5

¹Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, China.

|May 13, 2024

概括

表面活性剂NH766通过降低煤的湿透性和增加甲脱吸,增强了煤床甲 (CBM) 的提取. 其他表面活性剂,G526和D001,增加了可湿性,抑制了脱吸,但有助于控制灰尘.

科学领域:

* 地质化学和材料科学
* 石油工程石油工程

背景情况:

* 煤床甲 (CBM) 提取受到煤炭强烈的水友性阻碍,这强化了水-煤矩阵相互作用,并阻碍了甲脱附.
*减少这种相互作用对于提高CBM恢复率至关重要.

研究的目的:

* 为了研究表面活性剂NH766,G526和D001对模拟水力压裂条件下的高脂肪煤中的甲脱吸特性的影响.
* 分析煤炭湿透性变化与甲脱吸效率之间的关系.

主要方法:

* 进行了接触角度和红外光谱试验,以评估煤的湿透性和表面功能组.
* 在用0.1%的表面活性剂溶液在12MPa下处理的煤样品上进行了甲溶解试验.

主要成果:

*NH766处理使含氧功能组减少了30%,接触角度增加了10°,增强了疏水性,并提高了甲脱附率24%.
*G526和D001处理增加了含氧功能组 (5%和16%),减少了接触角,增强了水友性,并减少了甲溶解 (12.5%和20%).

结论:

*NH766有效地降低了煤炭的湿透性,促进了甲脱氧,并提高了CBM提取效率.
*G526和D001增强了煤炭的湿透性,抑制了甲脱氧,但显示了防止矿山中的灰尘和气体控制的潜力.

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