SUBI - Safety of underground storage during cyclic loading: functionality, integrity and monitoring of storage and drilling

Duration: 2017-2020

Funding: BMBF Program Geo:N Geoscience for Sustainability

PIs: Moritz Ziegler and Oliver Heidbach

Partner: Frank Schilling, Birgit Müller, Malte Westerhaus (KIT), Andreas Henk (TU Darmstadt), UNIPER, Thomas Röckel (Piewak & Partner)

In the course of the German change of energy policy, the mechanical requirements for underground gas storage will increase due to higher amplitude fluctuations during storage operations. For the assessment of site safety and the recommendation of suitable operating parameters, the impact of cyclic loads on the geological components of the storage facility are of key importance. We investigate of the interaction between the natural far-field stress field and the stress changes induced by the gas storage, with a the key motivation to assess the reactivation of disturbances and the resulting induced seismicity.

Gas Storage Modelling| Scetch shows the changes of porosity (upper figure) and permeability (lower figure) due to gas storage (Arrufo et al., 2014).

 

References

Aruffo, C.M., Rodriguez Herrera, A., Tenthorey, E., Krzikalla, F., Minton, J., & Henk, A. (2014): Geomechanical Modelling to Assess Fault Integrity at the CO2CRC Otway Project, Australia. – Australian Journal of Earth Sciences, 61, 987-1000

Contact

M.Sc. Moritz Ziegler

Section 2.6
Seismic Hazard and
Stress Field

Helmholtzstr. 6, Raum 306
T: +49(0)331 288 28630

Contact

PD Dr. Oliver Heidbach

Section 2.6
Seismic Hazard and
Stress Field

Helmholtzstr. 6, Raum 302
T: +49(0)331 288 2814