This report presents the results of the application of the state of stress assessment tool (SOSAT) on the FutureGen 2.0 dataset. SOSAT was developed as part of the National Risk Assessment Partnership (NRAP) project and provides a unique integrated framework to estimate the state of stress probability distribution at a given depth in the subsurface and evaluate the risk of induced shear and tensile failure resulting from the injection of CO2. The approach implemented in SOSAT is based on two deterministic and widely used methods to determine the state of stress (i.e, stress polygon and 1D tectonic-elastic approach). These method have been modified to account for uncertainties in the input parameters using a probabilistic approach. The methodology proposed in SOSAT was followed to evaluate the probability of reactivating critically oriented faults or potentially creating new hydraulic fractures in the FutureGen 2.0 reservoir.
Revised: January 24, 2020 |
Published: May 2, 2019