3D and 4D seismic investigations of fluid flow and gas hydrate systems
Using the state-of-the-art high resolution P-Cable 3D seismic system, in this thesis we (1) study the shallow strata (<1km below seabed) and describe the geological controls and driving mechanisms for fluid leakage at two sites in the northern Barents Sea, and (2) introduce a new time-lapse seism...
Published in: | Geochemistry, Geophysics, Geosystems |
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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UiT Norges arktiske universitet
2019
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Online Access: | https://hdl.handle.net/10037/15078 |
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ftunivtroemsoe:oai:munin.uit.no:10037/15078 2023-05-15T14:28:04+02:00 3D and 4D seismic investigations of fluid flow and gas hydrate systems Waage, Malin 2019-02-18 https://hdl.handle.net/10037/15078 eng eng UiT Norges arktiske universitet UiT The Arctic University of Norway Paper I: Waage, M., Portnov, A.D., Serov, P., Bünz, S., Waghorn, K.A., Vadakkepuliyambatta, S., . Andreassen, K. Geological controls on fluid flow and gas hydrate pingo development on the Barents Sea margin. (Submitted manuscript). Publisher’s version available at https://doi.org/10.1029/2018GC007930 . Accepted manuscript version available at https://hdl.handle.net/10037/14528 . Paper II: Waage, M., Serov, P., Andreassen, K., Waghorn, K.A. & Bünz, S. Controls on giant methane blowout craters and mounds on the Arctic seafloor. (Manuscript). Full text not available in Munin. Paper III: Waage, M., Bünz, S., Landrø, M., Plaza-Faverola, A. & Waghorn, K.A. Repeatability of high-resolution 3D seismic data. (Accepted manuscript). Publisher’s version available https://hdl.handle.net/10037/14568 . 978-82-8236-334-1 (trykt) og 978-82-8236-335-8 (pdf) https://hdl.handle.net/10037/15078 openAccess Copyright 2019 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 DOKTOR-004 Doctoral thesis Doktorgradsavhandling 2019 ftunivtroemsoe https://doi.org/10.1029/2018GC007930 2021-06-25T17:56:30Z Using the state-of-the-art high resolution P-Cable 3D seismic system, in this thesis we (1) study the shallow strata (<1km below seabed) and describe the geological controls and driving mechanisms for fluid leakage at two sites in the northern Barents Sea, and (2) introduce a new time-lapse seismic method for high-frequency (~30-350 Hz) P-Cable seismic data. The study areas are interesting as they are located close to the upper termination of the gas hydrate stability zone and may experience ongoing or past growth and decomposition of gas hydrates. Bjørnøyrenna area hosts over 100 km-wide craters – a possible result of methane blowouts in the past. In Storfjordrenna, methane venting associates to gas hydrate bearing mounds (pingos). The northern Barents Sea is an underexplored area compared to the southern Barents Sea open for petroleum exploration. Therefore, our studies provide unique insight into the architecture and nature of shallow methane accumulations, fluid flow dynamics and gas hydrate inventories connected to thermogenic gas reservoirs that are deemed to occur elsewhere in the region. Our results point towards different geological controls on fluid flow. In Storfjordrenna, methane from Paleocene strata migrates along permeable beds and extensional faults linked to the regional Hornsund Fault Complex, accumulates under Quaternary glacial tills and locally forms gas hydrate chimneys. The Bjørnøyrenna lacks a glacial cover and the craters are incised in lithified, yet fractured, Triassic bedrocks. The source and reservoir of methane here is shallow Triassic clinoforms widespread across the Barents Sea. Furthermore, using 6 P-Cable 3D seismic datasets from three areas with and without known active fluid flow, we test seismic repeatability at various geological setting and develop an optimal workflow for 4D seismic approach. The results show high potential of such high-resolutions time-lapse seismic studies to reveal natural fluid flow dynamics on a yearly time scale. Doctoral or Postdoctoral Thesis Arctic Barents Sea Hornsund Storfjordrenna University of Tromsø: Munin Open Research Archive Barents Sea Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Storfjordrenna ENVELOPE(17.000,17.000,76.000,76.000) Geochemistry, Geophysics, Geosystems 20 2 630 650 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 DOKTOR-004 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 DOKTOR-004 Waage, Malin 3D and 4D seismic investigations of fluid flow and gas hydrate systems |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 DOKTOR-004 |
description |
Using the state-of-the-art high resolution P-Cable 3D seismic system, in this thesis we (1) study the shallow strata (<1km below seabed) and describe the geological controls and driving mechanisms for fluid leakage at two sites in the northern Barents Sea, and (2) introduce a new time-lapse seismic method for high-frequency (~30-350 Hz) P-Cable seismic data. The study areas are interesting as they are located close to the upper termination of the gas hydrate stability zone and may experience ongoing or past growth and decomposition of gas hydrates. Bjørnøyrenna area hosts over 100 km-wide craters – a possible result of methane blowouts in the past. In Storfjordrenna, methane venting associates to gas hydrate bearing mounds (pingos). The northern Barents Sea is an underexplored area compared to the southern Barents Sea open for petroleum exploration. Therefore, our studies provide unique insight into the architecture and nature of shallow methane accumulations, fluid flow dynamics and gas hydrate inventories connected to thermogenic gas reservoirs that are deemed to occur elsewhere in the region. Our results point towards different geological controls on fluid flow. In Storfjordrenna, methane from Paleocene strata migrates along permeable beds and extensional faults linked to the regional Hornsund Fault Complex, accumulates under Quaternary glacial tills and locally forms gas hydrate chimneys. The Bjørnøyrenna lacks a glacial cover and the craters are incised in lithified, yet fractured, Triassic bedrocks. The source and reservoir of methane here is shallow Triassic clinoforms widespread across the Barents Sea. Furthermore, using 6 P-Cable 3D seismic datasets from three areas with and without known active fluid flow, we test seismic repeatability at various geological setting and develop an optimal workflow for 4D seismic approach. The results show high potential of such high-resolutions time-lapse seismic studies to reveal natural fluid flow dynamics on a yearly time scale. |
format |
Doctoral or Postdoctoral Thesis |
author |
Waage, Malin |
author_facet |
Waage, Malin |
author_sort |
Waage, Malin |
title |
3D and 4D seismic investigations of fluid flow and gas hydrate systems |
title_short |
3D and 4D seismic investigations of fluid flow and gas hydrate systems |
title_full |
3D and 4D seismic investigations of fluid flow and gas hydrate systems |
title_fullStr |
3D and 4D seismic investigations of fluid flow and gas hydrate systems |
title_full_unstemmed |
3D and 4D seismic investigations of fluid flow and gas hydrate systems |
title_sort |
3d and 4d seismic investigations of fluid flow and gas hydrate systems |
publisher |
UiT Norges arktiske universitet |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/15078 |
long_lat |
ENVELOPE(15.865,15.865,76.979,76.979) ENVELOPE(17.000,17.000,76.000,76.000) |
geographic |
Barents Sea Hornsund Storfjordrenna |
geographic_facet |
Barents Sea Hornsund Storfjordrenna |
genre |
Arctic Barents Sea Hornsund Storfjordrenna |
genre_facet |
Arctic Barents Sea Hornsund Storfjordrenna |
op_relation |
Paper I: Waage, M., Portnov, A.D., Serov, P., Bünz, S., Waghorn, K.A., Vadakkepuliyambatta, S., . Andreassen, K. Geological controls on fluid flow and gas hydrate pingo development on the Barents Sea margin. (Submitted manuscript). Publisher’s version available at https://doi.org/10.1029/2018GC007930 . Accepted manuscript version available at https://hdl.handle.net/10037/14528 . Paper II: Waage, M., Serov, P., Andreassen, K., Waghorn, K.A. & Bünz, S. Controls on giant methane blowout craters and mounds on the Arctic seafloor. (Manuscript). Full text not available in Munin. Paper III: Waage, M., Bünz, S., Landrø, M., Plaza-Faverola, A. & Waghorn, K.A. Repeatability of high-resolution 3D seismic data. (Accepted manuscript). Publisher’s version available https://hdl.handle.net/10037/14568 . 978-82-8236-334-1 (trykt) og 978-82-8236-335-8 (pdf) https://hdl.handle.net/10037/15078 |
op_rights |
openAccess Copyright 2019 The Author(s) |
op_doi |
https://doi.org/10.1029/2018GC007930 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
20 |
container_issue |
2 |
container_start_page |
630 |
op_container_end_page |
650 |
_version_ |
1766302211155951616 |