Research Progress of Sandstone Geothermal Reservoir Reinjection

Abstract

With the deepening of the development and utilization of geothermal energy, the study of sandstone geothermal reservoir reinjection technology is particularly important. This paper systematically discusses the mechanism and influencing factors of sandstone geothermal reservoir reinjection, and makes an in-depth analysis on how to optimize the reinjection strategy and technical measures. Firstly, this paper expounds the basic principle of reinjection, including the fluid mechanics and thermodynamic behavior in the reinjection process. Then, the geological factors, reinjection parameters and other related factors that affect the reinjection effect are analyzed in detail, such as water quality and reinjection methods. On this basis, this paper proposes an optimization strategy for sandstone geothermal reservoir reinjection, including numerical simulation optimization and experimental research optimization methods of reinjection parameters, as well as chemical treatment methods and water quality optimization measures to prevent geothermal reservoir blockage. In addition, the strategies to improve the efficiency of reinjection are also discussed, such as improving the completion process and optimizing the surface process. Through the research of this paper, it aims to provide theoretical basis and practical guidance for the development of sandstone geothermal reservoir reinjection technology, so as to realize the efficient and sustainable development of geothermal resources.