CO2 sequestration in depleted methane hydrate sandy reservoirs
CO2 sequestration in depleted methane hydrate sandy reservoirs
复制标题
枯竭的甲烷水合物砂质储层中的二氧化碳封存
DOI：
10.1016/j.jngse.2017.10.023
复制
发表时间：
2018
影响因子：
--
通讯作者：
Song Yongchen
中科院分区：
文献类型：
--
作者：
Liu Yu;Wang Pengfei;Yang Mingjun;Zhao Yuechao;Zhao Jiafei;Song Yongchen
CO2sequestration technology is crucial for carbon capture and storage (CCS). This study explores the sequestration behavior of CO2as a hydrate in depleted methane hydrate (MH)-bearing sediments. MH formation and dissociation, CO2injection, and water injection processes are experimentally simulated using glass beads to evaluate the entire technological process. The effects of different parameters on CO2hydrate formation are analyzed to evaluate hydrate-based CO2sequestration technologies. The aqueous water distribution minimally changes during the gas hydrate formation and dissociation in this study. For all the cases considered, local hydrate formation channels are not generated at the axis or wall of the vessel during the CO2injection process. The saturation of the CO2hydrate and residual water after the CO2hydrate formation is proportional to the initial reservoir water saturation. This is the first study to propose water injection to promote the formation of CO2hydrates, which are beneficial for CO2sequestration. The amount of injected water decreases as the CO2hydrate saturation increases before the water injection. A qualitative analysis indicates increased formation of CO2hydrates during the water injection and promotion of the CO2sequestration.
