Development of Durable Superhydrophobic Coated Proppants for Enhanced Geothermal Systems (EGS) to Mitigate Mineral Scaling and Improve Fracture Longevity

Enhanced Geothermal Systems (EGS) face challenges with mineral scaling, which reduces system efficiency and increases maintenance costs. Current superhydrophobic coatings, while effective in mitigating mineral scaling, have limitations in mechanical durability, thermal resistance, and chemical stability when exposed to the extreme conditions found in geothermal environments. Addressing these issues is crucial for the widespread adoption of these coatings in EGS applications. To overcome these limitations, a novel superhydrophobic proppant coating technology is being developed using a specific ceramic nanoparticle integrated into a polymeric matrix. This approach aims to improve durability, thermal stability, and chemical resistance, making the coating more suitable for the harsh geothermal conditions. The enhanced proppants will contribute to reducing mineral scaling and improving the efficiency and operational lifespan of EGS. The Phase I project will focus on optimizing the ceramic-polymer coating for sand particles used in EGS. In collaboration with the University of Utah team, resourced by the FORGE project, the coated proppants will be rigorously tested for thermal stability, mechanical durability, and mineral scaling resistance under simulated geothermal conditions. The University of Utah’s expertise and advanced facilities will support comprehensive performance evaluations, ensuring the proposed technology meets the demands of geothermal applications. An economic feasibility analysis will be conducted to determine potential cost savings and efficiency gains, followed by regular reporting and stakeholder engagement to ensure successful project execution and knowledge dissemination. The developed superhydrophobic proppants can be used in geothermal energy production and hydraulic fracturing to prevent mineral scaling, maintain fracture permeability, and improve energy extraction efficiency. This technology extends the lifespan of geothermal wells, reduces maintenance costs, and lowers the Levelized Cost of Energy. Public benefits include more sustainable and cost-effective energy production, reduced environmental impact due to decreased use of chemical treatments, and lower greenhouse gas emissions. The enhanced efficiency of geothermal systems supports broader adoption of clean energy, contributing to energy security and a more sustainable energy future.