The history of hydrocarbon filling of Danish chalk fields
In an oil reservoir, the geometry of the interface between water and oil is critical in determining the volume of oil trapped below the top seal. If the interface is planar and horizontal, the volume calculation is fairly simple, but if the interface is tilted or undulating, estimation of the volume...
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Geological Survey of Denmark and Greenland (GEUS)
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ftjgeusbullet:oai:geusjournals.org:article/4768 2023-05-15T16:29:19+02:00 The history of hydrocarbon filling of Danish chalk fields Frykman, Peter Vejbæk, Ole V. Bech, Niels Nielsen, Carsten M. 2004-07-20 application/pdf https://geusbulletin.org/index.php/geusb/article/view/4768 https://doi.org/10.34194/geusb.v4.4768 eng eng Geological Survey of Denmark and Greenland (GEUS) https://geusbulletin.org/index.php/geusb/article/view/4768/10409 https://geusbulletin.org/index.php/geusb/article/view/4768 doi:10.34194/geusb.v4.4768 GEUS Bulletin; Vol. 4 (2004): Review of Survey activities 2003; 9-12 2597-2154 2597-2162 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Rapid Communication. Peer-reviewed Article. 2004 ftjgeusbullet https://doi.org/10.34194/geusb.v4.4768 2022-03-15T17:22:15Z In an oil reservoir, the geometry of the interface between water and oil is critical in determining the volume of oil trapped below the top seal. If the interface is planar and horizontal, the volume calculation is fairly simple, but if the interface is tilted or undulating, estimation of the volume of the trapped oil is complex as it depends on the combined structural and fluid contact geometry. Since accumulation of the oil may take place over a time span of several million years, while the reservoir is experiencing burial and compaction, the charge history must be studied using dynamic methods that account for these changes and for flow in both the oil and water phases. These processes have been studied quantitatively at the Geological Survey of Denmark and Greenland (GEUS) in a project that has combined the burial model with a fluid flow simulator. The modelling study shows that filling of a chalk reservoir can have a very long and complex history dominated by very low fluid flow rates (cm/year). The resulting modelled present-day situation exhibits a very irregular oil distribution and a non-planar geometry of the fluid contacts, and shows marked similarities to that shown by the field data. Article in Journal/Newspaper Greenland GEUS Bulletin (Geological Survey of Denmark and Greenland) Greenland Geological Survey of Denmark and Greenland (GEUS) Bulletin 4 9 12 |
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GEUS Bulletin (Geological Survey of Denmark and Greenland) |
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ftjgeusbullet |
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English |
description |
In an oil reservoir, the geometry of the interface between water and oil is critical in determining the volume of oil trapped below the top seal. If the interface is planar and horizontal, the volume calculation is fairly simple, but if the interface is tilted or undulating, estimation of the volume of the trapped oil is complex as it depends on the combined structural and fluid contact geometry. Since accumulation of the oil may take place over a time span of several million years, while the reservoir is experiencing burial and compaction, the charge history must be studied using dynamic methods that account for these changes and for flow in both the oil and water phases. These processes have been studied quantitatively at the Geological Survey of Denmark and Greenland (GEUS) in a project that has combined the burial model with a fluid flow simulator. The modelling study shows that filling of a chalk reservoir can have a very long and complex history dominated by very low fluid flow rates (cm/year). The resulting modelled present-day situation exhibits a very irregular oil distribution and a non-planar geometry of the fluid contacts, and shows marked similarities to that shown by the field data. |
format |
Article in Journal/Newspaper |
author |
Frykman, Peter Vejbæk, Ole V. Bech, Niels Nielsen, Carsten M. |
spellingShingle |
Frykman, Peter Vejbæk, Ole V. Bech, Niels Nielsen, Carsten M. The history of hydrocarbon filling of Danish chalk fields |
author_facet |
Frykman, Peter Vejbæk, Ole V. Bech, Niels Nielsen, Carsten M. |
author_sort |
Frykman, Peter |
title |
The history of hydrocarbon filling of Danish chalk fields |
title_short |
The history of hydrocarbon filling of Danish chalk fields |
title_full |
The history of hydrocarbon filling of Danish chalk fields |
title_fullStr |
The history of hydrocarbon filling of Danish chalk fields |
title_full_unstemmed |
The history of hydrocarbon filling of Danish chalk fields |
title_sort |
history of hydrocarbon filling of danish chalk fields |
publisher |
Geological Survey of Denmark and Greenland (GEUS) |
publishDate |
2004 |
url |
https://geusbulletin.org/index.php/geusb/article/view/4768 https://doi.org/10.34194/geusb.v4.4768 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
GEUS Bulletin; Vol. 4 (2004): Review of Survey activities 2003; 9-12 2597-2154 2597-2162 |
op_relation |
https://geusbulletin.org/index.php/geusb/article/view/4768/10409 https://geusbulletin.org/index.php/geusb/article/view/4768 doi:10.34194/geusb.v4.4768 |
op_doi |
https://doi.org/10.34194/geusb.v4.4768 |
container_title |
Geological Survey of Denmark and Greenland (GEUS) Bulletin |
container_volume |
4 |
container_start_page |
9 |
op_container_end_page |
12 |
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1766019019898355712 |