Abstract
CO2 geological storage is one of the important means to reduce carbon emission and greenhouse effect, and it is an emerging field of earth science research. The selection of the injection rate has an important impact on the CO2 storage capacity, and it is limited by the injection time and construction conditions, thus the selection of the injection rate is a complex optimization problem. In this paper, the optimal injection site calculated based on dynamic planning is used for injection simulation, based on which the carbon sequestration injection rate optimization problem is transformed into a differential evolution problem, and the problem is optimized by different differential methods. For the Utsira block in the Sleipner project in Norway. On this basis, the effect of injection rate on storage capacity and leakage is researched, and numerical simulations under different injection rates are designed. Thus, it provides theoretical guidance for the selection of injection rate in CO2 geological storage.