Research progress of geothermal mining and carbon dioxide sequestration: multi-field coupling effect, synergy and optimization method

Abstract

With the escalating global demand for clean energy and the mounting pressure of carbon emission reduction, the synergistic approach of carbon dioxide sequestration in geothermal mining has gradually emerged as the current research hotspots. Studying this technology under multi-field coupling condition is crucial for efficient geothermal mining and carbon dioxide sequestration. From the perspective of multi-physical field coupling, the synergistic storage technology and optimization path of carbon dioxide geothermal mining are investigated, and the research progress in this field is also clarified.Initially, the mechanism of geothermal mining and sequestration with carbon dioxide are introduced. On this basis, we further explore the effects of various factors on the synergistic carbon sequestration in geothermal mining under a multi-field coupling mechanism. Finally, three different optimization methods based on injection-production schemes, reservoir structure and numerical simulation are proposed. Furthermore, the current challenges and future development directions of the synergistic sequestration technology for geothermal mining with carbon dioxide as the medium are summarized in this paper. The research presented in this paper provides vital theoretical basis and technical support for promoting the sustainable development of geothermal resources and accelerating the carbon dioxide emission reduction.