The prediction of the geomechanical system behaviour of an underground gas storage
during injection and withdrawal of gas requires a good knowledge of the reservoir,
the geological trap and additional parameters describing, for example, the two-phase or multi-phase flow in the subsurface.
We aim for an accurate reconstruction of the subsurface in our numerical model, a robust calibration of the subsurface model
using existing data, and modelling of multiphase flow in porous rocks using established physical methods, e.g. poroelasticity
and capillary pressure models (e.g. Brooks and Corey), to obtain a realistic distribution of gas/water contact, pressure and
stress in the subsurface. This enables the assessment of the impact of changes in production and injection rates on
the integrity of the overburden, fault stability, drawdown and well integrity.
- development of gas-water contact
- optimization of injection and production rates
- caprock integrity, fault stability assessment
- heave and subsidence