Exploration play statistics in the Southern North Sea region of The Netherlands and UK

Quirk, David G.; Archer, Stuart

doi:10.1144/sp494-2020-200

Cited by 5 publications

(1 citation statement)

References 41 publications

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“…at wells 36/23-1, 41/10-1, 42/09-1, 43/06-1, 44/06-1 and 44/07-1). In the UK onshore, basinal polyhalites are recorded in the Great Hatfield 1 well (location shown in Knott and Cross, 1992), 4 km north of West Newton oil field (Quirk and Archer, 2022). The seismic response of these basinal polyhalites in the Stassfurt Halite connects with the shelf polyhalites which are slightly higher in the section, and form a distinctive wing-like geometry at the slope adjacent to the margins of the platform.…”

Section: Basin Faciesmentioning

confidence: 99%

Sedimentology, Palaeogeography and Diagenesis of the Upper Permian (Z2) Hauptdolomit Formation on the Southern Margin of the Mid North Sea High and Implications for Reservoir Prospectivity

Garland

Tiltman

Inglis

2023

Journal of Petroleum Geology

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This paper provides an updated understanding of the reservoir stratigraphy, sedimentology, palaeogeography and diagenesis of the Upper Permian Hauptdolomit Formation of the Zechstein Supergroup ("Hauptdolomit") in a study area on the southern margin of the Mid North Sea High. The paper is based on the examination and description of core and cuttings data from 25 wells which were integrated with observations based on existing and new 3D seismic.Based on thin-section petrography of cuttings and core from the wells studied, it is evident that Hauptdolomit microfacies are distributed in a relatively predictable way, and well-defined platform interior, platform margin, slope and basin settings can be distinguished. Platform margins are typically characterised by the development of ooid shoals and, to a lesser-extent, by microbial build-ups. High-energy back-shoal settings are characterised by a more complex combination of peloid grainstones, thrombolitic and microbial build-ups, and fine crystalline dolomites. Lower energy lagoons which developed further behind the platform margin are characterised by a variety of microfacies types; fine crystalline dolomites are common in this setting as well as peloidal facies and local microbial build-ups. Intertidal and supratidal settings are typified by increased proportions of anhydrite and the development of laminated microbial bindstones (stromatolites). Platform margins are in general relatively steep and pass into slope and basinal settings. Only a few wells have penetrated Hauptdolomit successions deposited in a slope setting, and these successions are characterised by a range of resedimented shallow-water facies together with low-energy laminated dolomicrites and fine crystalline dolomites. Slope zones in the study area are interpreted from seismic data to be typically 1-1.5 km in width. Basinal Hauptdolomit deposits have been strongly affected by post-depositional diagenesis and are dedolomitised to variable degrees. The original depositional facies are rarely preserved.Diagenetic studies show that dolomitisation has affected almost the entire Hauptdolomit Formation throughout the study area in both basinal and platform settings. The dolomite is considered to result from seepage-reflux processes and is an early diagenetic phase. Mouldic porosity is present in many facies types as a result of dissolution, especially in ooid grainstones,

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Section: Basin Faciesmentioning

confidence: 99%

Sedimentology, Palaeogeography and Diagenesis of the Upper Permian (Z2) Hauptdolomit Formation on the Southern Margin of the Mid North Sea High and Implications for Reservoir Prospectivity

Garland

Tiltman

Inglis

2023

Journal of Petroleum Geology

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A method for fine-scale vertical heterogeneity quantification from well data and its application to siliciclastic reservoirs of the UKCS

Davies

Cowliff

Simmons

2023

Marine and Petroleum Geology

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A low-carbon future for The North Sea Basin

Quirk

Underhill

Gluyas

et al. 2022

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Human emissions of greenhouse gases have caused a predictable rise of 1.2°C in global temperatures. Over the last 70 years, the rise has occurred at a geologically unprecedented speed and scale. To avoid a worsening situation, most developed nations are turning to renewable sources of power to meet their climate commitments, including UK, Norway, Denmark and The Netherlands. The North Sea basin offers many advantages in the transition from fossil fuels by virtue of its natural resources, physical setting, offshore infrastructure and skilled workforce. Nonetheless, the magnitude of the up-front costs and the areas required to achieve net zero emissions are rarely acknowledged. In addition, some of the technologies being planned are commercially immature. In particular, the current cost of capture, transport and disposal of carbon dioxide is problematic, if it is to be applied as a large-scale solution to industrial emissions. To repurpose the North Sea to meet a low-carbon future will require substantial collaboration between governments and industrial sectors. There are nonetheless significant opportunities for companies prepared to switch from the traditional oil and gas business.Supplementary material at https://doi.org/10.6084/m9.figshare.c.5684641

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Exploration play statistics in the Southern North Sea region of The Netherlands and UK

Cited by 5 publications

References 41 publications

Sedimentology, Palaeogeography and Diagenesis of the Upper Permian (Z2) Hauptdolomit Formation on the Southern Margin of the Mid North Sea High and Implications for Reservoir Prospectivity

Sedimentology, Palaeogeography and Diagenesis of the Upper Permian (Z2) Hauptdolomit Formation on the Southern Margin of the Mid North Sea High and Implications for Reservoir Prospectivity

A method for fine-scale vertical heterogeneity quantification from well data and its application to siliciclastic reservoirs of the UKCS

A low-carbon future for The North Sea Basin

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