| dc.description.abstract | Geothermal energy, originating from Earth's crust, represents a promising renewable energy source that could prove vital for a sustainable future. This case study investigates the Draugen field area on the Trøndelag Platform, aiming to enhance the understanding of potential geothermal resources on the Norwegian Continental Shelf (NCS). Beginning with an overview of geothermal energy and its significance, the importance of harnessing subsurface heat for electricity generation and heating is highlighted. Despite historical focus on onshore geothermal projects, technological advancements and increasing costs of conventional energy sources prompt reconsideration of offshore geothermal exploration. The research addresses this gap by focusing on the Draugen field area, utilizing geological interpretation, well-log correlation, and geothermal gradient calculations to assess its geothermal potential. Structural characteristics of the subsurface strata is investigated, identifying the NNE-SSW striking structural high with an anticline geometry along the Basal Cretaceous Unconformity, the BCU, as areas of interest for further exploration. Key findings include correlations between non-linear and linear geothermal gradients, enhancing data reliability, thermal conductivity estimates aligning with typical values for clastic rocks, and geothermal gradient values of the wells 6407/9-1 and 6507/12-1, that exhibit the highest linear gradients at 42 °C/km and 43 °C/km, respectively. Further, the study suggests future research into possible open-loop systems considering the promising porosity and permeability of the Rogn formation. While direct electricity generation faces challenges due to moderate temperatures, exploring methods like the Organic Rankine Cycle for electricity and heating is promising. However, uncertainties in seismic resolution, temperature measurements, and thermal conductivity calculations underscore the need for further research and data refinement. The study emphasizes the importance of understanding subsurface temperature dynamics and technological advancements in offshore geothermal exploration. The insights from this research aim to contribute to evaluating geothermal potential across the entire NCS. | |