A new and working petroleum source rock on the UK Continental Shelf (Upper Permian, offshore Yorkshire)

Słowakiewicz, Mirosław; Gluyas, Jon; Kowalski, Adam; Edwards, Thomas W. D.; Słama, S; Mawson, Mike; Tucker, Maurice E.; Scovell, P. R.; Polonio, I.

doi:10.1016/j.marpetgeo.2020.104605

Cited by 9 publications

(3 citation statements)

References 87 publications

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“…The stable carbon isotope values of aliphatic and aromatic hydrocarbons in the Jarvis oil are similar to the δ 13 C values reported from Upper Jurassic oils from the North Sea and from the Haltenbanken area offshore mid-Norway (Bailey et al, 1990;Pedersen et al, 2006b;Słowakiewicz et al, 2020). Biomarkers and biomarker ratios obtained from the Jarvis oil are also comparable to those reported in oils derived from the Kimmeridge Clay Formation.…”

Section: Origin Of the Oil In Zechstein Carbonates At The Jarvis Stru...supporting

confidence: 80%

“…Sapropelic dolomite in the Z2 Kirkham Abbey Formation (Fyfe and Underhill, ibid.) was recently suggested to be a source rock for oil seeps in the Boulby Mine, North Yorkshire (Słowakiewicz et al, 2020). The offshore equivalent of the Kirkham Abbey Formation in the Moray Firth Basin area is the upper part of the Halibut Carbonate Formation (Cameron, 1993) which is a reservoir for the oil at the Jarvis structure.…”

Section: Introductionmentioning

confidence: 99%

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Origin of Oil in Upper Permian (Zechstein) Carbonate Reservoir Rocks at the Jarvis Structure Underlying the Ettrick Field, Outer Moray Firth, Uk North Sea

Słowakiewicz

Tucker

2023

Journal of Petroleum Geology

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Oil in the Jarvis structure underlying the main Upper Jurassic reservoir at the Ettrick oilfield (Outer Moray Firth, UK northern North Sea) is present in Upper Permian (Zechstein) carbonates. The origin of this "Jarvis oil" is investigated in this paper using a multidisciplinary approach based on data from well-logs and cores from wells 20/02-2 and 20/02-3. Reservoirs at the Jarvis structure consist of carbonates in the upper part of the Halibut Carbonate Formation (Ca2) and in the Carbonate Member of the Turbot Anhydrite Formation (Ca3). These carbonates are typical Zechstein dolomites composed of a range of facies from mudpackstones with storm beds deposited at moderate water depths to shoreface bioclastic-oolitic packstones to shallow-subtidal and intertidal microbial laminites. Interbedded anhydrites replace sabkha and lagoonal selenitic gypsum. Several shallowing-upward units are recognised. Molecular analysis of the Jarvis oil, and comparisons with biomarker and other geochemical data from extracts of Zechstein cores and published data from different source rocks from the North Sea area, suggest that the oil was generated by marine, OM-rich shales in the Upper Jurassic Kimmeridge Clay Formation. The oil was generated at peak oil window maturity and is characterised by high Pr/Ph, BNH/H and DBT/P ratios, and abundant C 28 steranes and C 28+29 monoaromatic and C 26 R + C 27 S triaromatic steroids. The molecular composition of organic material in extracts of core samples of Zechstein carbonates from wells in the Jarvis structure differs significantly from that of the Jarvis oil. Biomarkers such as BNH are absent in the core extracts, and there are different distributions and abundances of saturated and aromatic hydrocarbons, likely controlled by thermal maturity.

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Section: Origin Of the Oil In Zechstein Carbonates At The Jarvis Stru...supporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Origin of Oil in Upper Permian (Zechstein) Carbonate Reservoir Rocks at the Jarvis Structure Underlying the Ettrick Field, Outer Moray Firth, Uk North Sea

Słowakiewicz

Tucker

2023

Journal of Petroleum Geology

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“…The presence of a reliable, robust and high-quality seal is also a key element for a potential CCS site. Although in general Zechstein evaporites constitute excellent seals, fluid migration through fracture networks in Z2 halite has been observed at the Boulby Mine, south of Middlesborough, where liquid oil flows from fractures at a depth of 1100 m (Słowakiewicz et al, 2020).…”

Section: Carbon Capture Utilisation and Storage (Ccus)mentioning

confidence: 99%

The Upper Permian Zechstein Supergroup of Ne England and the Adjacent Southern North Sea: A Review of Its Role in the Uk's Energy Transition

Fyfe¹,

Underhill

2023

Journal of Petroleum Geology

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As the United Kingdom reduces its CO2 emissions in order to meet its 2050 net zero greenhouse gas targets, there will be a significant evolution of the UK's energy mix. The reliance on hydrocarbons will decrease while there is predicted to be an increase in low carbon energy sources such as renewables and nuclear. In order to decarbonise and achieve the net zero emissions targets while concurrently producing enough energy to provide for national energy needs, large‐scale, low carbon energy generation projects need to be developed alongside energy storage facilities to provide flexibility within a low carbon energy supply. Robust CCUS programmes will need be developed in order to capture and store unavoidable carbon dioxide emissions. The subsurface geology of the UK provides opportunities for the development of low carbon energy generation, energy storage and CCS, and the Upper Permian Zechstein Supergroup deposited in eastern England and offshore in the Southern North Sea is a potential host for these new developments. In NE England, salt cavern gas storage sites have been developed in thick Zechstein evaporites since the mid 20th centrury. In this paper we present new isopach maps and well correlation panels which will help to outline optimal locations for the development of additional salt caverns for gas storage. A review of the Zechstein Supergroup indicates that it does not exhibit great potential for the development of CCS, due both to its complex reservoir characteristics and to difficulties with both subsurface imaging and monitoring. However thick Zechstein evaporites could provide an excellent seal for CO2 storage in the underlying Lower Permian Rotliegend Group.

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Organic geochemistry and origin of bitumen seeps in the Upper Permian (Zechstein) bituminous anhydrite in a Cu–Ag mine in western Poland

Słowakiewicz

Panajew

2022

Int J Earth Sci (Geol Rundsch)

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A new and working petroleum source rock on the UK Continental Shelf (Upper Permian, offshore Yorkshire)

Cited by 9 publications

References 87 publications

Origin of Oil in Upper Permian (Zechstein) Carbonate Reservoir Rocks at the Jarvis Structure Underlying the Ettrick Field, Outer Moray Firth, Uk North Sea

Origin of Oil in Upper Permian (Zechstein) Carbonate Reservoir Rocks at the Jarvis Structure Underlying the Ettrick Field, Outer Moray Firth, Uk North Sea

The Upper Permian Zechstein Supergroup of Ne England and the Adjacent Southern North Sea: A Review of Its Role in the Uk's Energy Transition

Organic geochemistry and origin of bitumen seeps in the Upper Permian (Zechstein) bituminous anhydrite in a Cu–Ag mine in western Poland

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