Affiliation:
1. Institute of Applied Geosciences, Technical University of Darmstadt, 64287 Darmstadt, Germany
Abstract
This study addresses the use of former gas storage facilities as short-term storage for renewable energy through power-to-gas (PtG) technology in Germany. Three test cases with coupled thermal-hydromechanical (THM) modelling were conducted to evaluate short-term injection and production schedules. The operating rates were controlled by the upper and lower limits of the wellbore pressure. The maximum difference in pore pressure and effective stress was 0.6 MPa in all cases. Fault reactivation analysis was performed on the THM models to estimate fault stability. The critical pore pressure for safe reservoir operation was determined to be 1.25 times the original pore pressure, corresponding to a WBHP value of 20.25 MPa. The upper limit of the gas injection rate for safe storage operation was estimated to be between 100,000 and 150,000 m3/day. The thermal stresses were found to be negligible for short-term cases. The storage capacity of PtG technology was reported to be up to 1,322,400 kWh/d of renewable electricity, which can contribute to Germany becoming a greenhouse gas neutral country by 2050. The workflows and results of the study are applicable to all gas storage in a porous medium, including methane, CO2, and hydrogen.
Funder
Federal Ministry of Education and Research
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference38 articles.
1. Geomechanical response to seasonal gas storage in depleted reservoirs: A case study in the Po River basin, Italy;Teatin;J. Geophys. Res. AGU J.,2011
2. Modelling the geomechanics of gas reservoir: A case study from the Iona gas field, Australia;Tenthorey;Int. J. Greenh. Gas Control,2013
3. Aminian, K., Brannon, A., and Ameri, S. (2006, January 11–13). Gas storage in a depleted gas/condensate reservoir in the appalachian basin. Proceedings of the SPE Eastern Regional Meeting, Canton, OH, USA.
4. Using underground gas storage to replace the swing capacity of the giant natural gas field of Groningen in the Netherlands. A reservoir performance feasibility study;Remmelts;J. Pet. Sci. Eng.,2016
5. Industry, D.O.T.A. (2007). Meeting the Energy Challenge: A White Paper on Energy, Her Majesty’s Stationary Off.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献