Trapping, hysteresis and Ostwald ripening in hydrogen storage: A pore-scale imaging study
Trapping, hysteresis and Ostwald ripening in hydrogen storage: A pore-scale imaging study
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储氢中的捕获、滞后和奥斯特瓦尔德成熟：孔隙尺度成像研究
DOI：
10.1016/j.ijhydene.2023.12.029
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发表时间：
2024
影响因子：
7.2
通讯作者：
Goodarzi S
中科院分区：
文献类型：
--
作者：
Goodarzi S
绿色氢是在生产高峰期从剩余电力中产生的，可以注入地下储层，并在高需求时期回收。在这项研究中，X射线断层扫描检查滞后造成的重复氢注入和撤出。进行非稳态实验，以评估排水和吸胀循环后氢气和盐水的分布：一旦注射停止，立即拍摄流体的孔隙空间结构的图像，并在等待16小时后无流动。使用长度为60 mm、直径为12.8 mm的Bentheimer砂岩样品，并在环境温度和1 MPa孔隙压力下注入氢气。在三个注气循环中，将气体流速从2ml/min降低至0.08ml/min，然后进行水驱，而盐水注入速率保持恒定。结果表明，由于溶解在卤水中的气体的扩散，存在毛细管压力滞后和通过奥斯特瓦尔德熟化的氢迁移。这些现象的特点是通过分析界面曲率，面积，连通性和孔占有率。氢倾向于驻留在较大的孔隙空间中，与水润湿条件一致。流动停止后16小时，氢聚集成较大的神经节，其中单个大的连接神经节占主导地位。此外，欧拉特性在16小时后降低，表明连通性改善。这项工作意味着，奥斯特瓦尔德熟化-质量运输溶解气体-导致更少的滞后和更好的连通性比假设忽略这种影响，如在烃流和捕获的评估。
Green hydrogen, produced from surplus electricity during peak production, can be injected into subsurface reservoirs and retrieved during high-demand periods. In this study, X-ray tomography was employed to examine hysteresis resulting from repeated hydrogen injection and withdrawal. An unsteady state experiment was performed to evaluate the distribution of hydrogen and brine after drainage and imbibition cycles: images of the pore-space configuration of fluids were taken immediately once injection had stopped and after waiting for a period of 16 h with no flow. A Bentheimer sandstone sample with a length of 60 mm and diameter of 12.8 mm was used, and hydrogen was injected at ambient temperature and a pore pressure of 1 MPa. The gas flow rate was decreased from 2 ml/min to 0.08 ml/min over three cycles of gas injection followed by water flooding, while the brine injection rate was kept constant. The results showed the presence of capillary pressure hysteresis and hydrogen migration through Ostwald ripening due to the diffusion of gas dissolved in the brine. These phenomena were characterized through analysis of interfacial curvature, area, connectivity and pore occupancy. The hydrogen tended to reside in the larger pore spaces, consistent with water-wet conditions. 16 h after flow had stopped, the hydrogen aggregated into larger ganglia with a single large connected ganglion dominating the volume. Moreover, the Euler characteristic decreased after 16 h, indicating an improvement in connectivity. The work implies that Ostwald ripening – mass transport of dissolved gas – leads to less hysteresis and better connectivity than would be assumed ignoring this effect, as done in assessments of hydrocarbon flow and trapping.
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影响因子：
5.4
作者：
Abdulla Alhosani;A. Selem;Q. Lin;B. Bijeljic;M. Blunt
通讯作者：
M. Blunt
溶质浓度对规则孔隙网络中气泡集体演化影响的实验证据
影响因子：
3.9
作者：
N. Joewondo;V. Garbin;R. Pini
通讯作者：
R. Pini
多孔岩石中氢捕获和迁移的孔隙尺度观测：证明奥斯特瓦尔德成熟效应
影响因子：
5.2
作者：
Yihuai Zhang;B. Bijeljic;Ying Gao;Sepideh Goodarzi;S. Foroughi;M. Blunt
通讯作者：
M. Blunt
影响因子：
2.7
作者：
Hemme, Christina;van Berk, Wolfgang
通讯作者：
van Berk, Wolfgang
影响因子：
9.9
作者：
Z. Jangda;H. Menke;A. Busch;S. Geiger;T. Bultreys;Helen Lewis;Kamaljit Singh Institute of GeoEnergy Engineering;Heriot-Watt University;Department of Geoscience;Engineering;Delft University of Technology;3UGCTPProGRess;D. Geology;Ghent University
通讯作者：
Z. Jangda;H. Menke;A. Busch;S. Geiger;T. Bultreys;Helen Lewis;Kamaljit Singh Institute of GeoEnergy Engineering;Heriot-Watt University;Department of Geoscience;Engineering;Delft University of Technology;3UGCTPProGRess;D. Geology;Ghent University