Recent research led by Jackie Evan Kendrick from the Department of Earth and Environmental Sciences at Ludwig Maximilian Universität and the School of Geosciences at the University of Edinburgh reveals promising advancements in the geoenergy sector. Published in the scientific journal iScience, the study investigates the application of cyclic hydraulic pressure pulses to enhance productivity in geothermal energy extraction by reducing the hydraulic breakdown pressure in granite.
Traditionally, extracting geothermal energy from granite formations has been challenging due to the high pressures required to fracture the rock. Kendrick and her team utilized newly developed experimental equipment that applies pulsed square waves of fluid pressure to large granite samples. This innovative approach allows for precise monitoring of the rock’s response using dynamic high-resolution fiber optic strain sensors.
The findings indicate a significant reduction in breakdown pressure when employing cyclic pulsed pumping techniques. Kendrick noted, “Our results show a significant reduction in breakdown pressure can be achieved by cyclic pulsed pumping, and we explore the role of mean pressure and cyclic amplitude.” This reduction in breakdown pressure could lead to more efficient drilling and extraction processes, ultimately enhancing the viability of geothermal energy as a sustainable resource.
The implications of this research are substantial for the energy sector. By integrating cyclic hydraulic pressure pulses into geothermal extraction methods, companies could potentially lower operational costs and reduce peak power consumption during energy production. This aligns with the broader shift towards sustainable practices in the energy industry, as it not only improves efficiency but also minimizes environmental impacts.
As the demand for renewable energy sources continues to rise, the insights from Kendrick’s research could open new commercial opportunities for geothermal energy developers. By optimizing extraction techniques, the industry may see increased investment and interest, driving further advancements in geoenergy technologies. The study highlights a pivotal step towards making geothermal energy a more accessible and efficient alternative in the global energy landscape.
