The Leman Field, Blocks 49/26, 49/27, 49/28, 53/1, 53/2, UK North Sea

Hillier, A. P.; Williams, Brian P.

doi:10.1144/gsl.mem.1991.014.01.56

Cited by 11 publications

(4 citation statements)

References 5 publications

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“…Previous work has focused on the hydrocarbon prospectivity and heterogeneities of the gas bearing aeolian units (Glennie et al 1978;Arthur et al 1986;Weber 1988;Hillier and Williams 1991), however few studies have been conducted on the transitional zones between the central erg, fluvial corridor, and lake margin due to the complexities related to production within these units (George and Berry 1993;Howell and Mountney 1997;Sweet 1999). By combining legacy wireline data with sedimentological facies analysis of corresponding cored sections, and by focusing on the transitional zones between depositional environments rather than the potential prospectivity of hydrocarbon bearing units, a more detailed investigation of the complex sedimentary interactions and regional extents of the depositional environments has been conducted, resulting in an unbiased and regional interpretation from a wide scale holistic dataset.…”

Section: Discussionmentioning

confidence: 99%

Aeolian-Lacustrine Margins: Implications for Carbon Capture and Storage within the Rotliegend Group, Southern North Sea

Priddy,

Pettigrew,

Watson

et al. 2024

85th EAGE Annual Conference &Amp; Exhibition

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The Southern North Sea Basins of the United Kingdom were renowned for their hydrocarbon resources and exploited extensively from the 1960s to the 1990s. The Permian Leman Sandstone in particular formed an excellent reservoir due to its extensive clean aeolian sediments and was subsequently explored for decades, resulting in a wealth of subsurface data that are now widely accessible. The strata of the Leman Sandstone comprises mixed continental deposits from aeolian, fluvial and lacustrine environments which interfinger with the saline lake deposits of the Silverpit Formation. With the potential reassessment of depleted gas reservoirs in the North Sea for use as sequestration targets for captured carbon dioxide, there is significant renewed interest in the reservoir geology of the Leman Sandstone. A regional study of the sedimentology and petrophysical properties of the Leman Sandstone and Silverpit formations within quadrants 43, 44, 48 and 49 of the Southern North Sea has been conducted. Multiple interactions between the depositional environments are observed, resulting in a complex interplay between aeolian and lacustrine transgressive/regressive events, and migration and expansion/contraction of the fluvial system. In wireline petrophysical data, each depositional environment, along with their transitional environments, form relatively distinct clusters that can be used as a predictive tool for reservoir interpretation in the absence of core, despite extensive sediment recycling between environments.

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Section: Discussionmentioning

confidence: 99%

Aeolian-Lacustrine Margins: Implications for Carbon Capture and Storage within the Rotliegend Group, Southern North Sea

Priddy,

Pettigrew,

Watson

et al. 2024

85th EAGE Annual Conference &Amp; Exhibition

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“…section (as exemplified by the Victor and Viking fields in Figure 13). However, where the Zechstein Group evaporites are thin or absent, the structures show a greater degree of thick-skinned coupling to create larger closures (e.g., Leman and Hewett fields) (Hillier and Williams, 1991;Hillier, 2003).…”

Section: Prospective Reservoirsmentioning

confidence: 99%

Use of exploration methods to repurpose and extend the life of a super basin as a carbon storage hub for the energy transition

Underhill¹,

Jonge-Anderson²,

Hollinsworth³

et al. 2023

Bulletin

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The Anglo-Polish Super Basin forms an important petroleum province that stretches across northwestern Europe. It contains many giant gas fields, primarily located beneath a thick upper Permian (Zechstein Group) evaporite canopy and a smaller amount of oil and gas in Mesozoic reservoirs in the suprasalt section. Although exploration activity continues in the super basin, discoveries have diminished in size; many fields have been decommissioned; and it is beginning a transformation from an area with a rich petroleum heritage to a new, low-carbon energy hub. Given its favorable geology, infrastructure, and the location of major industrial emitters in adjacent land areas, offshore parts of the super basin are being evaluated and repurposed for renewable technologies like wind and geothermal energy, and as possible sites for subsurface carbon dioxide, hydrogen, compressed air, and methane gas storage.The use of a rich, dense, and high-fidelity seismic, well log, core, and pressure data sets acquired during petroleum exploration and production activities provide the basis for a play-based exploration assessment of the super basin's carbon storage potential. The results of our analysis of the super basin's offshore waters of the United Kingdom sector suggest that storage in traps containing Carboniferous and Permian (presalt) and Triassic (postsalt) clastic reservoirs have the potential to extend the life of the mature super basin during the energy transition. The detailed evaluation of the Rotliegend Group, from which most of the gas in the basin has been derived, enables a prospective subsalt carbon storage reservoir play fairway to be defined, common risks to be identified, and composite maps to be produced that show where the best storage

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“…Textures indicative of compaction prior to quartz cementation are not observed (Sullivan, 1991). Semi-quantitative calculations by Sullivan (1991) using the method of Sibley and Blatt (1976) show that pressure dissolution observed between quartz grains in fine grained beds The gas/water contact lies at a depth of z 6720 ft TVSS (Hillier and Williams, 1991).…”

Section: Introductionmentioning

confidence: 99%

“…(1994). Migration of gas into the reservoir occurrcd in the Late Crctaccous (Hillier and Williams. 1991).…”

Section: Introductionmentioning

confidence: 99%

Imported quartz cement in aeolian sandstone grew from water of uniform composition but has complex zonation

Sullivan¹,

Macaulay²,

Fallick³

et al. 1997

Terra Nova

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The origins and volumes of waters which mass-transport silica in sedimentary basins remain obscure. Many previous analytical studies have illustrated cases where quartz cements in sandstones originate from complex and variable fluids. By contrast we show, by using a combination of separation and analytical techniques, that in lower Permian sandstones of the southern North Sea the cementing fluid was isotopically uniform during growth of quartz cement with a 6l80 of 19.6 2 l.O%o V-SMOW. In this relatively uniform fluid quartz cements grew and developed complex cathodoluminescence (CL) zonations. Petrographic data show that 8-1Ooh quartz cement (locally 30%) was imported into this 380 km'x180 m thick aeolian sandstone, and cement distribution controlled by depositional permeabilities. We infer a large-scale, high volume, flux of evolved meteoric fluid during 2 km deep burial, and show that complex CL zonation may arise from relatively subtle changes in water composition.

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The Leman Field, Blocks 49/26, 49/27, 49/28, 53/1, 53/2, UK North Sea

Cited by 11 publications

References 5 publications

Aeolian-Lacustrine Margins: Implications for Carbon Capture and Storage within the Rotliegend Group, Southern North Sea

Aeolian-Lacustrine Margins: Implications for Carbon Capture and Storage within the Rotliegend Group, Southern North Sea

Use of exploration methods to repurpose and extend the life of a super basin as a carbon storage hub for the energy transition

Imported quartz cement in aeolian sandstone grew from water of uniform composition but has complex zonation

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