Hydro-mechanical simulation and analysis of induced seismicity for a hydraulic stimulation test at the Reykjanes geothermal field, Iceland.

• Modeling of injection-induced fault reactivation at Reykjanes, Iceland. • 3D faulted reservoir model based on integration of different data types. • Simulation of fully coupled hydro-mechanical processes and fault reactivation. • Combined induced seismicity analysis and physics-based simulation. • Improved understanding of interactions between faults in hydraulic stimulation. The combination of seismic analysis with advanced physics-based simulation provides an opportunity to further understand injection-induced fault reactivation, including the hydro-mechanical interplay between different faults and the rock where they reside. Here, this is investigated based on data from hydraulic stimulation of a well at the Reykjanes geothermal field. Central is the development of an interdisciplinary framework for integration of different data types towards a 3D, hydro-mechanical and faulted geothermal reservoir simulation model. This work shows how seismic interpretations can improve simulation models and, reciprocally, how fully coupled physics-based modeling can add to seismic interpretations in analysis of fault reactivation. [Display omitted] [ABSTRACT FROM AUTHOR]