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In order to reveal the water-rock coupling mechanism of CO2 geological storage. This study employed literature research and theoretical analysis to introduce the experimental conditions and methods for CO2-water-rock reactions, the physicochemical property changes of reservoirs after CO2 action, the evolution of microstructure, and the deterioration characteristics of mechanical properties. Key issues regarding the multi-field coupling effects of CO2-water-rock interactions were proposed, and the research progress on each key issue was summarized and analyzed. The results indicate that systematic research on the dissolution effects of CO2 in different phases and under long-term dynamic conditions is lacking in CO2 immersion tests. The experimental setups fail to accurately simulate the migration characteristics of CO2 in real reservoirs. The mechanism governing the generation, transport, and adhesion of precipitates in CO2-water-rock reactions remains unclear. This leads to limited research on the correlation between pore structure evolution and mechanical property degradation in reservoirs. Furthermore, the substantive relationship between reservoir microstructure and macroscopic mechanical parameters has not yet been established, which hinders the development of multi-scale damage evolution models. Additionally, current models for reservoir mechanical property degradation do not fully account for the multi-field coupling effects of thermal-hydrological-mechanical-chemical-damage interactions.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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