A regional CO 2 containment assessment of the northern Utsira Formation seal and overburden, northern North Sea
A regional CO 2 containment assessment of the northern Utsira Formation seal and overburden, northern North Sea
复制标题
对北海北部 Utsira 地层密封层和覆盖层北部的区域 CO 2 遏制评估
DOI:
10.1111/bre.12545
复制
发表时间:
2021
期刊:
影响因子:
3.2
通讯作者:
Lloyd C
中科院分区:
文献类型:
--
作者:
Lloyd C
Upscaling Carbon Capture and Storage requires identification of suitable storage sites, with robust reservoir seals. The Utsira Formation in the northern North Sea has been flagged as a target for further storage. However, there are no regional studies of seal variability addressing heterogeneities that could facilitate seal bypass. This study aims to: (a) identify, assess and map the elements that promote or restrict fluid migration, (b) develop a matrix to regionally map containment confidence (CC) and (c) rank the different areas for CO2containment across the Utsira Formation. The seal and overburden were mapped using a high‐resolution, pre‐stack depth‐migrated 3D broadband seismic reflection dataset and 141 exploration wells. Seal geometry, sandstone presence and sandstone connectivity in the seal and overburden were assigned relative CC scores, which were summed to map overall CC of the Utsira Fm. Indicators for shallow gas and migration were mapped and correlated with the other elements. Areas with the lowest CC are in the west of the Utsira Fm. Here, sandstones within the Seal Interval are connected through the overburden via sandy submarine fans. In the southeast, dipping stratigraphy downlaps onto the Utsira Fm., increasing the potential for connection with glacially‐derived channel‐lobe systems in the overburden. The areas with the highest CC are the central and northeast parts of the Utsira Fm., where the Seal Interval is mudstone‐dominated and parallel to the reservoir, and channel‐lobe systems identified in the Overburden Interval are disconnected from the reservoir. This area coincides with a thick depocentre of the northern Utsira Fm. These results can be used to inform CO2storage site selection and constrain future CO2plume simulation analyses for the Utsira Fm. The CC matrix outlined here can also be adapted and applied to regionally assess the containment of other potential CO2storage reservoirs in any setting.
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DOI:
10.2118/134891-ms
发表时间:
2010
期刊:
Energy Procedia
影响因子:
--
作者:
V. Singh;A. Cavanagh;Hilde Hansen;B. Nazarian;M. Iding;P. Ringrose
通讯作者:
P. Ringrose
DOI:
10.3997/2214-4609.20141426
发表时间:
2014
期刊:
Geological Society, London, Special Publications
影响因子:
--
作者:
N. Daynac;S. Lacaze;M. Mangue;F. Pauget
通讯作者:
F. Pauget
影响因子:
4.2
作者:
D. Ottesen;C. Batchelor;J. Dowdeswell;H. Løseth
通讯作者:
H. Løseth
影响因子:
2.7
作者:
Y. Rundberg;T. Eidvin
通讯作者:
T. Eidvin
影响因子:
--
作者:
C. Han
通讯作者:
C. Han