CO2 Storage in Deep Saline Aquifer Injection Types, Well Placement and Well Control Co-optimization

CO2 storage in deep saline aquifer was regard as a key technology to accomplish carbon emissions peak and carbon neutrality. To achieve the aim of simultaneously sequestrate large amount of CO2, this paper proposed an optimization design method of CO2 geological storage parameters in deep saline reservoirs is. Numerical simulation technology is used to simulate and predict the dynamic production data after CO2 injection in deep saline reservoirs under different well patterns and injection parameter combinations. According to the production dynamic data, the parameters representing the uniform rise of pressure were calculated. Genetic algorithm was used to update well pattern and injection parameters. Repeat the above steps until the condition of iterative convergence is satisfied; According to the optimal output target value, the optimal combination of carbon dioxide injection process parameters was determined. In the optimization process, the formation pressure rises evenly as the goal during injection, effectively reducing the risk of carbon dioxide leakage, making the optimization results operable and able to guide field application.