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在减压和Huff-n-Puff过程中在有机和无机纳米孔中利用和封存

Jiadong Guo¹, Shaoqi Kong¹, Kunjie Li²

¹College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China.

Nanomaterials (Basel, Switzerland)

|November 8, 2024

概括

二氧化碳 (CO2) 的注入增强了页岩气的回收,特别是在C4H10等较重的碳化合物中,采用了huff和puff方法. 这一过程还促进了纳米孔内更安全的二氧化碳储存.

科学领域:

石油工程是石油工程中的一个.
地质化学地质化学
纳米技术纳米技术

背景情况:

传统的页岩气回收方法在注入性和扫除效率方面存在局限性.
二氧化碳注入为增强页岩气回收提供了一个有希望的替代方案.
了解纳米孔中的气体吸附/脱附对于优化回收和二氧化碳封存至关重要.

研究的目的:

在页岩纳米孔中研究甲 (CH4) - butan (C4H10) 和CH4-C4H10-CO2混合物的吸附/脱附行为.
揭示了页岩气回收利用二氧化碳注入通过压力减排和二氧化碳和的过程的基本机制.
为了评估二氧化碳的效率,huff和puff用于碳化合物回收和二氧化碳封存.

主要方法:

使用了大法典蒙特卡洛 (GCMC) 模拟.
模拟集中在有机和无机纳米孔在不同的压力条件下.
分析涵盖了压力下降期间的吸附/脱附以及二氧化碳的气和气周期.

主要成果:

在初级生产过程中,CH4优先被回收,而C4H10则被困,特别是在微孔中.
二氧化碳吸气有效地从无机半孔中回收CH4和C4H10.
与压力下降相比,CO2 huff and puff 在有机和无机毛孔中显著提高了C4H10的回收.
吸附状态中有利于二氧化碳的封存,由高有机物质含量,高压和小孔径促进.

结论:

二氧化碳和是一种优质的方法,用于从页岩储中回收比较重的碳化合物,如C4H10.
该过程提供了改进的CH4回收和增强的C4H10回收效率.
页岩纳米孔中的吸附状态二氧化碳封存是一种更安全,更有效的储存机制.

关键词:

二氧化碳的吹和吹.碳二氧化碳的封存方式有机纳米孔是有机的纳米孔.压力下降的压力下降页岩气是一种页岩气.

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