孔尺度成像用于量化由于奥斯瓦尔德成熟而导致的被困CO2的演变和减少
Rukuan Chai1, Sajjad Foroughi1, Sepideh Goodarzi1
1Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, U.K.
Environmental science & technology
|December 1, 2025
概括
奥斯瓦尔德成熟导致地质碳储存的变化,因为它溶解了小的二氧化碳气体,并重新连接了剩余的. 这一过程可以将剩余的二氧化碳和度高估大约三分之一.
科学领域:
- 地球科学 地球科学 地球科学
- 地质化学 地质化学
- 石油工程是石油工程中的一个.
背景情况:
- 地质碳储存对于减缓气候变化至关重要.
- 由于孔尺度过程,被捕获的二氧化碳的长期稳定性是不确定的.
- 奥斯瓦尔德成熟,即通过溶解的二氧化碳运输来重新排列被捕获的二氧化碳,会影响二氧化碳和.
研究的目的:
- 为了可视化和量化二氧化碳结体在水库砂岩中的现场演变.
- 评估奥斯瓦尔德成熟对被困二氧化碳和度的影响.
- 为了评估忽略奥斯瓦尔德成熟的和度测量的准确性.
主要方法:
- 高分辨率的三维X射线成像.
- 在水库砂岩中对二氧化碳质演变的现场观测.
- 捕获的二氧化碳和量的量化随着时间的推移而变化.
主要成果:
- 由于奥斯瓦尔德成熟,观察到二氧化碳质的同时收缩和生长,减少了形态复杂性,并增强了连接性.
- 经过证明的大小依赖性淋巴结反应:小淋巴结溶解,中等淋巴结改变大小,大淋巴结稳定.
- 在没有流动和随后的盐水注入后,CO2和度从22.8%降低到15.6%.
结论:
- 奥斯特瓦尔德的成熟显著改变了地质形成中被困的二氧化碳的分布和和.
- 忽视奥斯瓦尔德成熟的测量可以将剩余CO2和度高估约33%.
- 了解像奥斯瓦尔德成熟这样的孔尺度动态对于准确评估地质碳储存至关重要.
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