Numerical simulation study on evolution characteristics and difference of CO2 injection pressure transfer between multi-branch pinnate borehole and single borehole

Key Points

• To investigate the evolution characteristics and differences in CO2 injection pressure transfer between multi-branch pinnate borehole and single borehole systems.
• Conducted numerical simulations comparing multi-branch pinnate borehole and single borehole configurations for CO2 injection pressure transfer.
• Analyzed evolution characteristics to assess performance and efficiency between the two borehole types.
• Multi-branch boreholes showed enhanced pressure transfer efficiency, outperforming single boreholes under similar conditions.
• Significant differences in pressure evolution characteristics were observed, with implications for optimized CO2 injection strategies.