  The hydraulic stimulation of the well RN-34 at the Reykjanes geothermal field
in Iceland caused increased seismic activity near the well. Here, we use this
as a case study for investigation on how seismic analysis can be combined with
physics-based simulation studies to further understand injection-induced fault
reactivation. The work presents new analysis of the seismic data combined with
application of a recent simulation software for modeling of coupled
hydromechanical processes and fault deformation caused by fluid injection. The
simulation model incorporates an explicit model of the fault network based on
geological characterization combined with insights from seismic analysis. The
3D faulted reservoir model is then calibrated based on injection data. Despite
limited data, the work shows how seismic interpretations can be used in
developing simulation models and, reciprocally, how the modeling can add to the
seismic interpretations in analysis of dynamics.
