| Abstract |
To address the issue of integrating and reusing a large number of shut-down geothermal wells in Hebei Province caused by policy regulations, this study explores economically and scientifically viable solutions for the reutilization of these resources. Taking Xian County in Hebei Province as a case study, the research employs technical integration, economic evaluation models (including financial net present value, internal rate of return, and dynamic investment payback period), break-even analysis, and sensitivity analysis to assess the technical feasibility and economic benefits of reusing shut-down geothermal wells. The results indicate that through well-flushing for production enhancement, cascade utilization technology, and optimized reinjection processes, the reuse of shut-down geothermal wells is not only feasible but also demonstrates promising economic prospects. The demonstration project achieves a financial net present value of 1.7382 million CNY, an internal rate of return of 5.48%, and a dynamic investment payback period of 11.74 years, indicating the project's profitability. Furthermore, heating fee income has the most significant impact on the project's economic benefits, suggesting that optimizing charging mechanisms and controlling investment costs can enhance project returns. This research provides new insights for the sustainable development of geothermal resources, offering valuable references for similar regions facing geothermal well integration and reuse challenges, while also providing scientific support for policymakers and enterprise decision-makers. |