Gas reservoir CO2 flooding extraction and collaborative database building conversion opportunity optimization method, system and equipment

The invention relates to the technical field of carbon dioxide capture and utilization and geological storage, in particular to a gas reservoir CO2 drive extraction and collaborative library building conversion opportunity optimization method, system and equipment. Comprising the steps of performing history fitting based on actual production data of a target gas reservoir, and establishing a numerical simulation model; optimal injection-production parameters of gas reservoir CO2 flooding are obtained through an orthogonal experiment; taking the CO2 breakthrough amount as a conversion opportunity, simulating a gas reservoir CO2 flooding and gas storage rebuilding process, and obtaining natural gas yield, gas storage capacity, gas well working gas quantity and an economic net present value under different conversion opportunities; establishing an evaluation method for the conversion opportunity of gas reservoir CO2 drive and gas storage rebuilding; and in the limit CO2 breakthrough range, the optimal conversion