Discussion on ‘Late Cenozoic geological evolution of the northern North Sea: development of a Miocene unconformity reshaped by large-scale Pleistocene sand intrusion’,
            <i>Journal of the Geological Society</i>
            , 170, 133–145

Rundberg, Yngve; Eidvin, Tor

doi:10.1144/jgs2014-023

Cited by 8 publications

(6 citation statements)

References 24 publications

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“…Contourite reservoirs are beginning to be recognised in the subsurface, especially those interpreted as bottom-current reworked turbidites. These include the upper parts of the giant Marlim oilfield in the Campos Basin (Moraes et al, 2007;Mutti and Carminatti, 2012), the Mzia and Coral super-giant gas fields off Mozambique (Fonnesu et al, 2020;Intawong et al, 2019;Palermo et al, 2014;Sansom, 2018), the Yinggehai basin and Baiyun sag in the northern South China Sea (Gong et al, 2016;Huang et al, 2017), and the Snorre field on the Norwegian slope (Rundberg and Eidvin, 2016). In the case of the Marlim field, the reworked facies are interpreted as highly bioturbated fine to medium contourite sands, relatively more poorly sorted than the associated turbidite sands with a muddy matrix.…”

Section: Subsurface Reservoirsmentioning

confidence: 99%

Contourite porosity, grain size and reservoir characteristics

Stow

Smillie

et al. 2020

Marine and Petroleum Geology

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Section: Subsurface Reservoirsmentioning

confidence: 99%

Contourite porosity, grain size and reservoir characteristics

Stow

Smillie

et al. 2020

Marine and Petroleum Geology

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“…In the Tampen Spur region there are several mounds protruding from the underlying succession of the Utsrira Fm. If their margins are faulted (Løseth et al., 2013; Rundberg & Eidvin, 2016), they could present migration routes into the Seal Interval. Small‐scale faults (below seismic resolution) have been hypothesised to be the cause of intra‐formation seal breach (metre‐scale mudstones) at Sleipner, as a result of post‐depositional ice‐sheet loading and unloading (Cavanagh & Haszeldine, 2014; Løtveit et al., 2019).…”

Section: Discussionmentioning

confidence: 99%

A regional CO₂ containment assessment of the northern Utsira Formation seal and overburden, northern North Sea

et al. 2021

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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 CO 2 containment across the Utsira Formation. The seal and overburden were mapped using a high-resolution, pre-stack depth-migrated Highlights• There is not a laterally-extensive and homogenous seal above the Utsira Formation.• Regional high-resolution data and modern interpretation approaches illuminate potential seal bypass systems.• A novel containment confidence matrix is used to rank the potential CO 2 storage areas.• The workflow for detailed seal and overburden assessment is highly applicable to other basins. | 1987 EAGE LLOYD et aL. F I G U R E 1 Study area with wells and data extent. (a) Context of the study area in the North Sea and the location of the Sleipner injection site. Satellite imagery from the World Imagery layer of ArcMap online. Bathymetry from EMODnet Bathymetry Consortium (2018). (b) A simplified map showing the main structural elements in the study area (modified from Faerseth et al., 1996). (c) Utsira Fm. thickness map (Eidvin et al., 2013) with seismic dataset extent (yellow box). Dots show wells used in this study, and data from those highlighted in white are presented in this study.Oil and gas fields in the region are also indicated. (d) Regional west-east profile of the Jurassic Rift and overlying stratigraphy split into groups to show main structural elements for reference. Inset shows the studied interval.

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“…The Miocene succession is incomplete both on the Norwegian Sea shelf and in the northern part of the North Sea. Discussions about ages of different formations are numerous for example Løseth and Henriksen (2005), Eidvin et al (2013); Eidvin, Riis, and Rasmussen (2014), Rundberg and Eidvin (2016a, 2016b), Løseth, Raulline, and Nygård (2013), Løseth et al (2016), Løseth and Øygarden (2016), Eidvin and Rundberg (2016a, 2016b), Løseth (2016); Grøsfjeld et al (2019), and Eidvin et al (2019). The incomplete successions in these areas are due to a number of reasons; variable sediment flux from Scandinavia, erosion by bottom currents and large‐ and small‐scale tectonic movements (e.g., inversion structures and salt diapirism).…”

Section: Discussionmentioning

confidence: 99%

A new stratigraphic framework for the Miocene – Lower Pliocene deposits offshore Scandinavia: A multiscale approach

Dybkjær

Rasmussen

Eidvin³

et al. 2020

Geological Journal

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Here, we present an updated stratigraphic subdivision of the Oligocene to Pleistocene succession (880–610 m) in the newly proposed type well for the Molo Formation, the industrial 6407/9‐5 well, located on the continental shelf in the eastern Norwegian Sea. Furthermore, new data from the Danish North Sea wells Nora‐1, Vagn‐2, and Tove‐1 are presented. The studied succession in the 6407/9‐5 well is composed of five sedimentary units separated by hiati. The dating of these five units is based on correlation to the stratigraphically more complete Neogene succession in the (Danish) central North Sea area. In this study, a robust stratigraphic framework of these five units, based on a combination of dinoflagellate cysts (dinocyst) stratigraphy and seismic data, is established. The Oligocene succession is referred to the NSO zonation of Van Simaeys et al., Review of Palaeobotany and Palynology, 2005, 134, 105–128, while the Miocene–Pliocene succession is referred to the dinocyst zonation of Dybkjær and Piasecki, Review of Palaeobotany and Palynology, 2010, 161, 1–29. In well 6407/9‐5 the two lowermost units, located below the Molo Formation, comprise a Rupelian (Lower Oligocene) succession up to 803 m, and an Aquitanian/Burdigalian (Lower Miocene) succession from 803 to 787 m, respectively. Both of these units are referred to the Brygge Formation. The Molo Formation is separated from the underlying Brygge Formation by an unconformity. Furthermore, and in contrast to previous studies, our study shows that the Molo Formation (787–703 m) has an unconformity within it. The lower part of the formation (787–724 m) is dated to late Tortonian (Late Miocene), and referred to the Hystrichosphaeropsis obscura dinocyst Zone. The upper part (724–703 m) is dated to Zanclean (Early Pliocene), and referred to the Melitasphaeridium choanophorum dinocyst Zone. The uppermost unit studied (703–670 m) in the well is referred to the Gelasian (Lower Pleistocene) and is included in the Naust Formation. The regional correlation of this stratigraphy with the complete succession in the Danish North Sea reveals that the hiati found in the Miocene succession on the Norwegian Sea shelf are controlled by tectonism, while the internal depositional patterns of the Molo Formation were controlled by eustatic sea‐level changes.

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Discussion on ‘Late Cenozoic geological evolution of the northern North Sea: development of a Miocene unconformity reshaped by large-scale Pleistocene sand intrusion’, Journal of the Geological Society , 170, 133–145

Cited by 8 publications

References 24 publications

Contourite porosity, grain size and reservoir characteristics

Contourite porosity, grain size and reservoir characteristics

A regional CO₂ containment assessment of the northern Utsira Formation seal and overburden, northern North Sea

A new stratigraphic framework for the Miocene – Lower Pliocene deposits offshore Scandinavia: A multiscale approach

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Discussion on ‘Late Cenozoic geological evolution of the northern North Sea: development of a Miocene unconformity reshaped by large-scale Pleistocene sand intrusion’, Journal of the Geological Society , 170, 133–145

Cited by 8 publications

References 24 publications

Contourite porosity, grain size and reservoir characteristics

Contourite porosity, grain size and reservoir characteristics

A regional CO2 containment assessment of the northern Utsira Formation seal and overburden, northern North Sea

A new stratigraphic framework for the Miocene – Lower Pliocene deposits offshore Scandinavia: A multiscale approach

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Resources

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A regional CO₂ containment assessment of the northern Utsira Formation seal and overburden, northern North Sea