Coupled Basin and Hydro-Mechanical Modeling of Gas Chimney Formation: The SW Barents Sea
Gas chimneys are one of the most intriguing manifestations of the focused fluid flows in sedimentary basins. To predict natural and human-induced fluid leakage, it is essential to understand the mechanism of how fluid flow localizes into conductive chimneys and the chimney dynamics. This work predic...
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ftmdpi:oai:mdpi.com:/1996-1073/14/19/6345/ 2023-08-20T04:05:30+02:00 Coupled Basin and Hydro-Mechanical Modeling of Gas Chimney Formation: The SW Barents Sea Georgy A. Peshkov Lyudmila A. Khakimova Elena V. Grishko Magnus Wangen Viktoria M. Yarushina 2021-10-04 application/pdf https://doi.org/10.3390/en14196345 EN eng Multidisciplinary Digital Publishing Institute H: Geo-Energy https://dx.doi.org/10.3390/en14196345 https://creativecommons.org/licenses/by/4.0/ Energies; Volume 14; Issue 19; Pages: 6345 porosity waves chimney gas leakage ductile rock hydro-mechanical modeling basin modeling reservoir modeling Barents Sea Text 2021 ftmdpi https://doi.org/10.3390/en14196345 2023-08-01T02:52:43Z Gas chimneys are one of the most intriguing manifestations of the focused fluid flows in sedimentary basins. To predict natural and human-induced fluid leakage, it is essential to understand the mechanism of how fluid flow localizes into conductive chimneys and the chimney dynamics. This work predicts conditions and parameters for chimney formation in two fields in the SW Barents Sea, the Tornerose field and the Snøhvit field in the Hammerfest Basin. The work is based on two types of models, basin modeling and hydro-mechanical modeling of chimney formation. Multi-layer basin models were used to produce the initial conditions for the hydro-mechanical modeling of the relatively fast chimneys propagation process. Using hydro-mechanical models, we determined the thermal, structural, and petrophysical features of the gas chimney formation for the Tornerose field and the Snøhvit field. Our hydro-mechanical model treats the propagation of chimneys through lithological boundaries with strong contrasts. The model reproduces chimneys identified by seismic imaging without pre-defining their locations or geometry. The chimney locations were determined by the steepness of the interface between the reservoir and the caprock, the reservoir thickness, and the compaction length of the strata. We demonstrate that chimneys are highly-permeable leakage pathways. The width and propagation speed of a single chimney strongly depends on the viscosity and permeability of the rock. For the chimneys of the Snøhvit field, the predicted time of formation is about 13 to 40 years for an about 2 km high chimney. Text Barents Sea Hammerfest Hammerfest Basin Snøhvit MDPI Open Access Publishing Barents Sea The Chimney ENVELOPE(-55.748,-55.748,52.617,52.617) Energies 14 19 6345 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
porosity waves chimney gas leakage ductile rock hydro-mechanical modeling basin modeling reservoir modeling Barents Sea |
spellingShingle |
porosity waves chimney gas leakage ductile rock hydro-mechanical modeling basin modeling reservoir modeling Barents Sea Georgy A. Peshkov Lyudmila A. Khakimova Elena V. Grishko Magnus Wangen Viktoria M. Yarushina Coupled Basin and Hydro-Mechanical Modeling of Gas Chimney Formation: The SW Barents Sea |
topic_facet |
porosity waves chimney gas leakage ductile rock hydro-mechanical modeling basin modeling reservoir modeling Barents Sea |
description |
Gas chimneys are one of the most intriguing manifestations of the focused fluid flows in sedimentary basins. To predict natural and human-induced fluid leakage, it is essential to understand the mechanism of how fluid flow localizes into conductive chimneys and the chimney dynamics. This work predicts conditions and parameters for chimney formation in two fields in the SW Barents Sea, the Tornerose field and the Snøhvit field in the Hammerfest Basin. The work is based on two types of models, basin modeling and hydro-mechanical modeling of chimney formation. Multi-layer basin models were used to produce the initial conditions for the hydro-mechanical modeling of the relatively fast chimneys propagation process. Using hydro-mechanical models, we determined the thermal, structural, and petrophysical features of the gas chimney formation for the Tornerose field and the Snøhvit field. Our hydro-mechanical model treats the propagation of chimneys through lithological boundaries with strong contrasts. The model reproduces chimneys identified by seismic imaging without pre-defining their locations or geometry. The chimney locations were determined by the steepness of the interface between the reservoir and the caprock, the reservoir thickness, and the compaction length of the strata. We demonstrate that chimneys are highly-permeable leakage pathways. The width and propagation speed of a single chimney strongly depends on the viscosity and permeability of the rock. For the chimneys of the Snøhvit field, the predicted time of formation is about 13 to 40 years for an about 2 km high chimney. |
format |
Text |
author |
Georgy A. Peshkov Lyudmila A. Khakimova Elena V. Grishko Magnus Wangen Viktoria M. Yarushina |
author_facet |
Georgy A. Peshkov Lyudmila A. Khakimova Elena V. Grishko Magnus Wangen Viktoria M. Yarushina |
author_sort |
Georgy A. Peshkov |
title |
Coupled Basin and Hydro-Mechanical Modeling of Gas Chimney Formation: The SW Barents Sea |
title_short |
Coupled Basin and Hydro-Mechanical Modeling of Gas Chimney Formation: The SW Barents Sea |
title_full |
Coupled Basin and Hydro-Mechanical Modeling of Gas Chimney Formation: The SW Barents Sea |
title_fullStr |
Coupled Basin and Hydro-Mechanical Modeling of Gas Chimney Formation: The SW Barents Sea |
title_full_unstemmed |
Coupled Basin and Hydro-Mechanical Modeling of Gas Chimney Formation: The SW Barents Sea |
title_sort |
coupled basin and hydro-mechanical modeling of gas chimney formation: the sw barents sea |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/en14196345 |
long_lat |
ENVELOPE(-55.748,-55.748,52.617,52.617) |
geographic |
Barents Sea The Chimney |
geographic_facet |
Barents Sea The Chimney |
genre |
Barents Sea Hammerfest Hammerfest Basin Snøhvit |
genre_facet |
Barents Sea Hammerfest Hammerfest Basin Snøhvit |
op_source |
Energies; Volume 14; Issue 19; Pages: 6345 |
op_relation |
H: Geo-Energy https://dx.doi.org/10.3390/en14196345 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/en14196345 |
container_title |
Energies |
container_volume |
14 |
container_issue |
19 |
container_start_page |
6345 |
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1774716038368198656 |