Details
| Original language | English |
|---|---|
| Publication status | Published - 2012 |
| Event | ISRM International Symposium, EUROCK 2012 - Stockholm, Sweden Duration: 28 May 2012 → 30 May 2012 |
Conference
| Conference | ISRM International Symposium, EUROCK 2012 |
|---|---|
| Country/Territory | Sweden |
| City | Stockholm |
| Period | 28 May 2012 → 30 May 2012 |
Abstract
During the last years the demand for high frequency storage of natural gas increased dramatically. The new operation modes for gas storage caverns in rock salt mass require a more detailed rock mechanical consideration of thermal induced stresses in the vicinity of the caverns. This means that the change of gas temperatures during operation and the consequences of these temperature changes on the stressing of the salt rock mass cannot be neglected any more, i.e. thermo-mechanical coupled calculations are necessary. As rock salt has a time dependent material behavior stress redistributions in the rock salt mass take place even under constant internal pressure conditions. Therefore not only the phases with different pressure change rates but also the duration of phases with nearly constant internal pressure have an influence on the resulting state variables. Within the paper on principle two different loading scenarios are taken into account. The first scenario is a cyclic pressure change with different withdrawal and injection rates, the second scenario includes idle time periods under maximum pressure. The main differences are demonstrated and discussed with respect to recommendations for the rock mechanical design rock salt has a time dependent material behavior stress redistributions in the rock salt mass take place even under constant internal pressure conditions.
Keywords
- Cyclic loading, Gas cavern design, Numerical analysis, Rock mechanics, Rock salt
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
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2012. Paper presented at ISRM International Symposium, EUROCK 2012, Stockholm, Sweden.
Research output: Contribution to conference › Paper › Research › peer review
}
TY - CONF
T1 - Thermo
T2 - ISRM International Symposium, EUROCK 2012
AU - Staudtmeister, K.
AU - Zapf, D.
PY - 2012
Y1 - 2012
N2 - During the last years the demand for high frequency storage of natural gas increased dramatically. The new operation modes for gas storage caverns in rock salt mass require a more detailed rock mechanical consideration of thermal induced stresses in the vicinity of the caverns. This means that the change of gas temperatures during operation and the consequences of these temperature changes on the stressing of the salt rock mass cannot be neglected any more, i.e. thermo-mechanical coupled calculations are necessary. As rock salt has a time dependent material behavior stress redistributions in the rock salt mass take place even under constant internal pressure conditions. Therefore not only the phases with different pressure change rates but also the duration of phases with nearly constant internal pressure have an influence on the resulting state variables. Within the paper on principle two different loading scenarios are taken into account. The first scenario is a cyclic pressure change with different withdrawal and injection rates, the second scenario includes idle time periods under maximum pressure. The main differences are demonstrated and discussed with respect to recommendations for the rock mechanical design rock salt has a time dependent material behavior stress redistributions in the rock salt mass take place even under constant internal pressure conditions.
AB - During the last years the demand for high frequency storage of natural gas increased dramatically. The new operation modes for gas storage caverns in rock salt mass require a more detailed rock mechanical consideration of thermal induced stresses in the vicinity of the caverns. This means that the change of gas temperatures during operation and the consequences of these temperature changes on the stressing of the salt rock mass cannot be neglected any more, i.e. thermo-mechanical coupled calculations are necessary. As rock salt has a time dependent material behavior stress redistributions in the rock salt mass take place even under constant internal pressure conditions. Therefore not only the phases with different pressure change rates but also the duration of phases with nearly constant internal pressure have an influence on the resulting state variables. Within the paper on principle two different loading scenarios are taken into account. The first scenario is a cyclic pressure change with different withdrawal and injection rates, the second scenario includes idle time periods under maximum pressure. The main differences are demonstrated and discussed with respect to recommendations for the rock mechanical design rock salt has a time dependent material behavior stress redistributions in the rock salt mass take place even under constant internal pressure conditions.
KW - Cyclic loading
KW - Gas cavern design
KW - Numerical analysis
KW - Rock mechanics
KW - Rock salt
UR - http://www.scopus.com/inward/record.url?scp=85044229731&partnerID=8YFLogxK
M3 - Paper
AN - SCOPUS:85044229731
Y2 - 28 May 2012 through 30 May 2012
ER -