Mitigating risk in geothermal projects with an integrated modelling approach: a case study in France
Giovanni Sosio, Annalisa Campana, Rabah Ould Braham, Charidimos Spyrou, Oleksandr Burachok, Andreia Mandiuc, Clément Baujard and Albert Genter
Journal name: First Break
Issue: Vol 37, No 7, July 2019 pp. 71 - 79
Special topic: Energy Transition
Info: Article, PDF ( 1.03Mb )
Price: € 30
Unlike other renewable energy sources, the successful appraisal and development of geothermal heat require an understanding of the subsurface environment. The resource must be identified and quantified to justify the sustainability of the project. Moreover, the acceptability of the geothermal operations must be ensured for the success of the project. Sustainability and acceptability can be addressed with a thorough knowledge of the subsurface. The oil and gas industry has accumulated decades of experience characterizing deep and ultradeep formations, including in the challenging conditions that are commonly found in geothermal sites (high temperature, pressure, salinity, corrosion…). This experience has already been successfully applied to develop and apply solutions to explore, map, and produce geothermal resources (Sosio et al., 2019). Subsurface modelling, in particular, enables the quantifying of performance and risks associated with development and operations. This paper presents a case study of the application of 3D modelling of a geothermal site in eastern France. An integrated geological, thermohydraulic, and geomechanical description of the subsurface is applied to the data typically available for low-to-medium-enthalpy geothermal reservoirs in sedimentary basins. We show how this description is used to evaluate the performance and risk factors related to the development and operation of the geothermal site, potentially improving its economic and social aspects.