Injecting carbon dioxide into the ground for permanent storage or oil displacement and recycling has become the focus and hot spot in the international oil industry. On the one hand, carbon dioxide is the main influencing factor of greenhouse effect. Under the background of energy saving and emission reduction all over the world, how to effectively reduce the emission of carbon dioxide into the atmosphere is the key to solve environmental problems. On the other hand, as a kind of gas drive, carbon dioxide can be injected into the ground for permanent storage or can be used as a displacement fluid to improve oil recovery.