O2地质储存对页岩气储层影响的研究进展与评述

s a Greenhouse gas, the permanent storage of CO2 in shale has multiple significance, such as reducing the greenhouse effect, improving the environment and increasing the recovery of shale gas. The research for CO2 geological storage in shale gas reservoirs is still in preliminary stage at domestic and overseas. The author through the consult massive literature has discussed on the research present situation for the properties of CO2 adsorption and desorption in shale gas reservoir, from the reserve form of shale gas, pore structure, clay mineral, content of total organic carbon (TOC) and the reflectance of vitrinite (Ro) and so aspects on. Also analyzed the key problems and the research hotspots, difficulties. The results showed that the research is thorough for the performance of the adsorption and desorption of CO2 and CH4 in coal seam both at home and abroad. Due to the similarity between coal and shale gas reservoirs, the research laid a solid foundation for CO2 flooding shale gas and storing. Systematic studies for the adsorption and desorption mechanism of CO2 in the shale, as well as the evolution of shale pore structure before and after the injection of CO2 will be a key research direction in the future.