Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling
Accepted manuscript version, licensed CC BY-NC-ND 4.0. The Barents Sea has experienced intense erosion throughout the Cenozoic due to uplift and repeated episodes of glaciation. This, in turn, has driven large pressure and temperature fluctuations in the sediment substrate along with rearrangement o...
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ftunivtroemsoe:oai:munin.uit.no:10037/24762 2023-05-15T15:38:35+02:00 Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling Kishankov, Aleksei Serov, Pavel Bünz, Stefan Patton, Henry Jared Hubbard, Alun Lloyd Mattingsdal, Rune Vadakkepuliyambatta, Sunil Andreassen, Karin Marie 2022-01-25 https://hdl.handle.net/10037/24762 https://doi.org/10.1016/j.marpetgeo.2022.105557 eng eng Elsevier Marine and Petroleum Geology Norges forskningsråd: 223259 Kishankov, Serov P, Bünz S, Patton H, Hubbard AL, Mattingsdal R, Vadakkepuliyambatta S, Andreassen K. Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling. Marine and Petroleum Geology. 2022 FRIDAID 1994107 doi:10.1016/j.marpetgeo.2022.105557 0264-8172 1873-4073 https://hdl.handle.net/10037/24762 openAccess Copyright 2022 The Author(s) Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2022 ftunivtroemsoe https://doi.org/10.1016/j.marpetgeo.2022.105557 2022-04-13T22:58:43Z Accepted manuscript version, licensed CC BY-NC-ND 4.0. The Barents Sea has experienced intense erosion throughout the Cenozoic due to uplift and repeated episodes of glaciation. This, in turn, has driven large pressure and temperature fluctuations in the sediment substrate along with rearrangement of thermogenic oil and gas accumulations. As a result, some hydrocarbon fields have relatively shallow depths, and natural gas release is widespread. This study focuses on the process of hydrocarbon leakage from the Realgrunnen reservoir - encompassing the Hanssen and Wisting discoveries - to the shallow subsurface caused by repeated cycles of glacial erosion in the central Barents Sea throughout the Quaternary. We apply 2D basin and petroleum system modeling to two seismic sections using data from two wells and run ten different scenarios that test model sensitivity to key parameters. We find that the primary factors governing gas leakage are the erosion amount, its distribution between glacial and preglacial stages, and the timing of the glaciations. Our results demonstrate that intense oil and gas leakage from the Realgrunnen reservoir occurs primarily through widespread faults activated during the first deglaciation episode. Further considerable gas leakage occurs by the seal breach after a critical overburden thickness is eroded and pressure on the reservoir decreases to ca. 9 MPa. Modeling reveals that the first deglaciation episode causes up to ca. 20% loss of oil and gas from the reservoir, whereas leakage after the seal breach yields a further ca. 15% decrease in gas. Our results are supported by seismic analyses that demonstrate hydrocarbon leakage in the study area Article in Journal/Newspaper Barents Sea University of Tromsø: Munin Open Research Archive Barents Sea Hanssen ENVELOPE(-164.467,-164.467,-85.983,-85.983) Marine and Petroleum Geology 138 105557 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
Accepted manuscript version, licensed CC BY-NC-ND 4.0. The Barents Sea has experienced intense erosion throughout the Cenozoic due to uplift and repeated episodes of glaciation. This, in turn, has driven large pressure and temperature fluctuations in the sediment substrate along with rearrangement of thermogenic oil and gas accumulations. As a result, some hydrocarbon fields have relatively shallow depths, and natural gas release is widespread. This study focuses on the process of hydrocarbon leakage from the Realgrunnen reservoir - encompassing the Hanssen and Wisting discoveries - to the shallow subsurface caused by repeated cycles of glacial erosion in the central Barents Sea throughout the Quaternary. We apply 2D basin and petroleum system modeling to two seismic sections using data from two wells and run ten different scenarios that test model sensitivity to key parameters. We find that the primary factors governing gas leakage are the erosion amount, its distribution between glacial and preglacial stages, and the timing of the glaciations. Our results demonstrate that intense oil and gas leakage from the Realgrunnen reservoir occurs primarily through widespread faults activated during the first deglaciation episode. Further considerable gas leakage occurs by the seal breach after a critical overburden thickness is eroded and pressure on the reservoir decreases to ca. 9 MPa. Modeling reveals that the first deglaciation episode causes up to ca. 20% loss of oil and gas from the reservoir, whereas leakage after the seal breach yields a further ca. 15% decrease in gas. Our results are supported by seismic analyses that demonstrate hydrocarbon leakage in the study area |
format |
Article in Journal/Newspaper |
author |
Kishankov, Aleksei Serov, Pavel Bünz, Stefan Patton, Henry Jared Hubbard, Alun Lloyd Mattingsdal, Rune Vadakkepuliyambatta, Sunil Andreassen, Karin Marie |
spellingShingle |
Kishankov, Aleksei Serov, Pavel Bünz, Stefan Patton, Henry Jared Hubbard, Alun Lloyd Mattingsdal, Rune Vadakkepuliyambatta, Sunil Andreassen, Karin Marie Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling |
author_facet |
Kishankov, Aleksei Serov, Pavel Bünz, Stefan Patton, Henry Jared Hubbard, Alun Lloyd Mattingsdal, Rune Vadakkepuliyambatta, Sunil Andreassen, Karin Marie |
author_sort |
Kishankov, Aleksei |
title |
Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling |
title_short |
Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling |
title_full |
Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling |
title_fullStr |
Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling |
title_full_unstemmed |
Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling |
title_sort |
hydrocarbon leakage driven by quaternary glaciations in the barents sea based on 2d basin and petroleum system modeling |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/24762 https://doi.org/10.1016/j.marpetgeo.2022.105557 |
long_lat |
ENVELOPE(-164.467,-164.467,-85.983,-85.983) |
geographic |
Barents Sea Hanssen |
geographic_facet |
Barents Sea Hanssen |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
Marine and Petroleum Geology Norges forskningsråd: 223259 Kishankov, Serov P, Bünz S, Patton H, Hubbard AL, Mattingsdal R, Vadakkepuliyambatta S, Andreassen K. Hydrocarbon leakage driven by quaternary glaciations in the Barents Sea based on 2D basin and petroleum system modeling. Marine and Petroleum Geology. 2022 FRIDAID 1994107 doi:10.1016/j.marpetgeo.2022.105557 0264-8172 1873-4073 https://hdl.handle.net/10037/24762 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1016/j.marpetgeo.2022.105557 |
container_title |
Marine and Petroleum Geology |
container_volume |
138 |
container_start_page |
105557 |
_version_ |
1766369675404378112 |