The role of stratigraphic juxtaposition for seal integrity in proven CO
            <sub>2</sub>
            fault-bound traps of the Southern North Sea

Yielding, Graham; Lykakis, Nikos; Underhill, John R.

doi:10.1144/1354-0793/10-026

Cited by 30 publications

(14 citation statements)

References 23 publications

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“…Upper Cretaceous, Tertiary and Quaternary sediments are thickest in the eastern part of the study area near the UK-Netherlands median line. Structural inversion during the Late Cretaceous resulted in contractional reactivation of existing deep-seated normal faults to the south of the Zechstein salt basin, and at least two later stages of structural inversion occurred as a result of Alpine events (Badley et al 1989;Yielding et al 2011). The Zechstein evaporites are widely characterised by halokinesis which initiated during the latter parts of the Triassic and continued intermittently throughout the Mesozoic (Allen et al 1994).…”

Section: Geological Settingmentioning

confidence: 99%

In-situ stress orientations in the UK Southern North Sea: Regional trends, deviations and detachment of the post-Zechstein stress field

Williams

Fellgett

Kingdon

et al. 2015

Marine and Petroleum Geology

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The orientation of the maximum horizontal compressive stress (S Hmax ) in the UK Southern North Sea has been determined using data derived from borehole breakout analysis of four-arm caliper logs.The results agree with existing stress models for NW Europe, confirming that horizontal stresses in the region have an approximately NW-SE orientation of S Hmax . This is interpreted as being a result of plate boundary convergence. Local deviations in the horizontal stress orientations are observed spatially and also vertically within some wells. Some of these deviations are attributed to rotations of the stress field adjacent to faults or between different fault blocks. The data also suggest detachment of the stress regime in the post-Permian cover rocks, caused by the presence of a thick underlying Permian-aged evaporite sequence and associated halokinesis. Despite the generally low scoring of the stress measurements when compared with the quality ranking scheme proposed by the World Stress Map project, the consistent orientation of the stress trajectories suggests that these data are reliably indicative of regional stress orientations. Analyses of borehole resistivity image logs have been used to verify the calculated stress orientations in some wells. These image logs validate some measurements whilst highlighting a number of deficiencies in the use of four-arm caliper data to characterise borehole breakouts. From the available data it is difficult to unambiguously define the nature of variations from the mean stress orientations observed. Further analysis of image log data over greater depth intervals is therefore required in order to investigate more fully the effects of stress rotations near faults and apparent stress detachment above saltcored anticlinal structures.

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Section: Geological Settingmentioning

confidence: 99%

In-situ stress orientations in the UK Southern North Sea: Regional trends, deviations and detachment of the post-Zechstein stress field

Williams

Fellgett

Kingdon

et al. 2015

Marine and Petroleum Geology

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“…1,3,10,11 However, scCO 2 -although denser than CO 2 gas -is buoyant compared to formation water and migrates upwards; this migration can be minimized and CO 2 can be prevented from escaping to the atmosphere by four main trapping mechanisms: structural, [11][12][13] residual, 10,14,15 dissolution, [16][17][18] and mineral. [19][20][21] Many factors affect the efficiency and capacity of the main CO 2 trapping mechanisms: temperature, 22 vertical to horizontal permeability ratio, 23 cap rock properties, 13 fault-seal behaviour, 24,25 or reservoir heterogeneity. 26 One factor, which has received little attention, is the CO 2 -wettability of the rock.…”

Section: Introductionmentioning

confidence: 99%

Influence of CO₂‐wettability on CO₂ migration and trapping capacity in deep saline aquifers

et al. 2016

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CO2 migration and trapping capacity in deep saline aquifers are highly influenced by various rock and fluid parameters. One of the key parameters, which has received little attention, is CO2‐wettability. We thus simulated the behavior of a CO2 plume in a deep saline aquifer as a function of rock wettability and predicted various associated CO2 migration patterns and trapping capacities. We clearly show that CO2‐wet reservoirs are most permeable for CO2; CO2 migrates furthest upwards and the plume has a candle‐like shape, while in a water‐wet reservoir the plume is more compact and rain‐drop shaped. Furthermore, higher residual trapping capacities are achieved in water‐wet rock, while solubility trapping is more efficient in CO2‐wet rock. We thus conclude that rock wettability has a highly significant impact on both CO2 migration and trapping capacities and that water‐wet reservoirs are preferable CO2 sinks due to their higher storage capacities and higher containment security. © 2016 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…An interesting find is the Fizzy gas field (UK) and the analogue Oak Field (discovered before 2007), both having a fault-dip closure configuration on the Fizzy Horst (Yielding et al 2011). Both fields contain extremely high CO 2 percentages, up to 50% for the Fizzy Field.…”

Section: New Geological Insights and Discoveries Since 2007mentioning

confidence: 99%

New insights on subsurface energy resources in the Southern North Sea Basin area

Doornenbal

Kombrink

Bouroullec

et al. 2019

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The Southern North Sea Basin area, stretching from the UK to the Netherlands, has a rich hydrocarbon exploration and production history. The past, present and expected future hydrocarbon and geothermal exploration trends in this area are discussed for eight key lithostratigraphic intervals, ranging from the Lower Carboniferous to Cenozoic. In the period between 2007 and 2017, a total of 95 new hydrocarbon fields were discovered, particularly in Upper Carboniferous, Rotliegend and Triassic reservoirs. Nineteen geothermal systems were discovered in the Netherlands onshore, mainly targeting aquifers in the Rotliegend and Upper Jurassic/Lower Cretaceous formations. Although the Southern North Sea Basin area is mature in terms of hydrocarbon exploration, it is shown that with existing and new geological insights, additional energy resources are still being proven in new plays such as the basal Upper Rotliegend (Ruby discovery) for natural gas and a new Chalk play for oil. It is predicted that hydrocarbon exploration in the Southern North Sea Basin area will probably experience a slight growth in the coming decade before slowing down, as the energy transition further matures. Geothermal exploration is expected to continue growing in the Netherlands onshore as well as gain more momentum in the UK. Since the publication of the Petroleum Geological Atlas of the Southern Permian Basin (SPB) (Doornenbal & Stevenson 2010), which gave a comprehensive overview based on more than 150 years of petroleum exploration and research from onshore UK to Poland, the basin has continued to see successful exploration wells drilled together with a diversification of drilling targets. This paper summarizes the activities over the period 2007-17 to give an update on new exploration insights. The focus of this paper is more limited than the entire SPB Atlas area and concentrates on its western part between latitudes

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The role of stratigraphic juxtaposition for seal integrity in proven CO ₂ fault-bound traps of the Southern North Sea

Cited by 30 publications

References 23 publications

In-situ stress orientations in the UK Southern North Sea: Regional trends, deviations and detachment of the post-Zechstein stress field

In-situ stress orientations in the UK Southern North Sea: Regional trends, deviations and detachment of the post-Zechstein stress field

Influence of CO₂‐wettability on CO₂ migration and trapping capacity in deep saline aquifers

New insights on subsurface energy resources in the Southern North Sea Basin area

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The role of stratigraphic juxtaposition for seal integrity in proven CO 2 fault-bound traps of the Southern North Sea

Cited by 30 publications

References 23 publications

In-situ stress orientations in the UK Southern North Sea: Regional trends, deviations and detachment of the post-Zechstein stress field

In-situ stress orientations in the UK Southern North Sea: Regional trends, deviations and detachment of the post-Zechstein stress field

Influence of CO2‐wettability on CO2 migration and trapping capacity in deep saline aquifers

New insights on subsurface energy resources in the Southern North Sea Basin area

Contact Info

Product

Resources

About

The role of stratigraphic juxtaposition for seal integrity in proven CO ₂ fault-bound traps of the Southern North Sea

Influence of CO₂‐wettability on CO₂ migration and trapping capacity in deep saline aquifers