Details
| Original language | English |
|---|---|
| Title of host publication | 49th US Rock Mechanics / Geomechanics Symposium 2015 |
| Pages | 855-862 |
| Number of pages | 8 |
| ISBN (electronic) | 9781510810518 |
| Publication status | Published - 2015 |
| Event | 49th US Rock Mechanics / Geomechanics Symposium - San Francisco, United States Duration: 29 Jun 2015 → 1 Jul 2015 |
Publication series
| Name | 49th US Rock Mechanics / Geomechanics Symposium 2015 |
|---|---|
| Volume | 2 |
Abstract
In recent years, the number of new and planned gas storage caverns has increased, so that optimization of the existing salt deposits and especially the question of the minimum allowable distance between the cavern and the salt dome boundaries became important. Although caverns were built in the salt dome boundaries in recent years, however, no dimensioning concept was previously published worldwide. This paper deals with creating a concept for rock mechanical dimensioning of gas storage caverns in the salt dome edge area. Within this dimensioning concept it has to be demonstrated that caverns can be operated gas tight and stable in this location. The analysis of the formation of salt deposits and possibilities of exploration of a salt dome represents an important basis for the model buildup and evaluation of a cavern in the salt dome edge region. A numerical model was created that takes into account the essential and non-negligible influences in the salt dome edge area. Furthermore time-dependent, thermo-mechanical coupled numerical calculations were carried out. The influences of different model variations were analyzed regarding the cavern surrounding stress state. Based on the calculation results, the effects of varying the parameters on the cavern surrounding stress state were discussed and assessed. Here, the dimensioning parameters maximum and minimum internal pressures as well as the pressure change rates of the cavern were analyzed for a cavern in salt dome edge region. An important role for the evaluation of the stress state of the cavern in the salt dome edge region plays the stress intensity index of the rock salt. Within this paper a dimensioning concept is shown which includes beneath the recommendation for the selection of a suitable calculation model of a cavern in the border region of a salt dome a dimensioning parameter as a recommendation for the minimum distance between the cavern wall and the salt dome boundary.
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
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49th US Rock Mechanics / Geomechanics Symposium 2015. 2015. p. 855-862 (49th US Rock Mechanics / Geomechanics Symposium 2015; Vol. 2).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
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TY - GEN
T1 - Rock mechanical dimensioning of gas storage caverns in the salt dome edge region
AU - Zapf, D.
PY - 2015
Y1 - 2015
N2 - In recent years, the number of new and planned gas storage caverns has increased, so that optimization of the existing salt deposits and especially the question of the minimum allowable distance between the cavern and the salt dome boundaries became important. Although caverns were built in the salt dome boundaries in recent years, however, no dimensioning concept was previously published worldwide. This paper deals with creating a concept for rock mechanical dimensioning of gas storage caverns in the salt dome edge area. Within this dimensioning concept it has to be demonstrated that caverns can be operated gas tight and stable in this location. The analysis of the formation of salt deposits and possibilities of exploration of a salt dome represents an important basis for the model buildup and evaluation of a cavern in the salt dome edge region. A numerical model was created that takes into account the essential and non-negligible influences in the salt dome edge area. Furthermore time-dependent, thermo-mechanical coupled numerical calculations were carried out. The influences of different model variations were analyzed regarding the cavern surrounding stress state. Based on the calculation results, the effects of varying the parameters on the cavern surrounding stress state were discussed and assessed. Here, the dimensioning parameters maximum and minimum internal pressures as well as the pressure change rates of the cavern were analyzed for a cavern in salt dome edge region. An important role for the evaluation of the stress state of the cavern in the salt dome edge region plays the stress intensity index of the rock salt. Within this paper a dimensioning concept is shown which includes beneath the recommendation for the selection of a suitable calculation model of a cavern in the border region of a salt dome a dimensioning parameter as a recommendation for the minimum distance between the cavern wall and the salt dome boundary.
AB - In recent years, the number of new and planned gas storage caverns has increased, so that optimization of the existing salt deposits and especially the question of the minimum allowable distance between the cavern and the salt dome boundaries became important. Although caverns were built in the salt dome boundaries in recent years, however, no dimensioning concept was previously published worldwide. This paper deals with creating a concept for rock mechanical dimensioning of gas storage caverns in the salt dome edge area. Within this dimensioning concept it has to be demonstrated that caverns can be operated gas tight and stable in this location. The analysis of the formation of salt deposits and possibilities of exploration of a salt dome represents an important basis for the model buildup and evaluation of a cavern in the salt dome edge region. A numerical model was created that takes into account the essential and non-negligible influences in the salt dome edge area. Furthermore time-dependent, thermo-mechanical coupled numerical calculations were carried out. The influences of different model variations were analyzed regarding the cavern surrounding stress state. Based on the calculation results, the effects of varying the parameters on the cavern surrounding stress state were discussed and assessed. Here, the dimensioning parameters maximum and minimum internal pressures as well as the pressure change rates of the cavern were analyzed for a cavern in salt dome edge region. An important role for the evaluation of the stress state of the cavern in the salt dome edge region plays the stress intensity index of the rock salt. Within this paper a dimensioning concept is shown which includes beneath the recommendation for the selection of a suitable calculation model of a cavern in the border region of a salt dome a dimensioning parameter as a recommendation for the minimum distance between the cavern wall and the salt dome boundary.
UR - http://www.scopus.com/inward/record.url?scp=84964959974&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84964959974
T3 - 49th US Rock Mechanics / Geomechanics Symposium 2015
SP - 855
EP - 862
BT - 49th US Rock Mechanics / Geomechanics Symposium 2015
T2 - 49th US Rock Mechanics / Geomechanics Symposium
Y2 - 29 June 2015 through 1 July 2015
ER -