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  • 1
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    Geology of the Brent Group (1992)
    London : The Geological Society
    Details
    Keywords: Marine Geologie ; Erdöl ; Jura ; Brent Group ; Geologie ; Norwegen ; Schelf ; Geology ; North Sea ; Petroleum
    Description / Table of Contents: A. C. Morton, R. S. Haszeldine, M. R. Giles, and S. Brown: Geology of the Brent Group: Introduction / Geological Society, London, Special Publications, 61:1-2, doi:10.1144/GSL.SP.1992.061.01.01 --- J. M. Bowen: Exploration of the Brent Province / Geological Society, London, Special Publications, 61:3-14, doi:10.1144/GSL.SP.1992.061.01.02 --- P. C. Richards: An introduction to the Brent Group: a literature review / Geological Society, London, Special Publications, 61:15-26, doi:10.1144/GSL.SP.1992.061.01.03 --- Graham Yielding, Michael E. Badley, and Alan M. Roberts: The structural evolution of the Brent Province / Geological Society, London, Special Publications, 61:27-43, doi:10.1144/GSL.SP.1992.061.01.04 --- B. C. Mitchener, D. A. Lawrence, M. A. Partington, M. B. J. Bowman, and J. Gluyas: Brent Group: sequence stratigraphy and regional implications / Geological Society, London, Special Publications, 61:45-80, doi:10.1144/GSL.SP.1992.061.01.05 --- S. J. C. Cannon, M. R. Giles, M. F. Whitaker, P. M. Please, and S. V. Martin: A regional reassessment of the Brent Group, UK sector, North Sea / Geological Society, London, Special Publications, 61:81-107, doi:10.1144/GSL.SP.1992.061.01.06 --- W. Helland-Hansen, M. Ashton, L. Lømo, and R. Steel: Advance and retreat of the Brent delta: recent contributions to the depositional model / Geological Society, London, Special Publications, 61:109-127, doi:10.1144/GSL.SP.1992.061.01.07 --- Elaine S. Scott: The palaeoenvironments and dynamics of the Rannoch—Etive nearshore and coastal succession, Brent Group, northern North Sea / Geological Society, London, Special Publications, 61:129-147, doi:10.1144/GSL.SP.1992.061.01.08 --- Jan Alexander: A discussion of alluvial sandstone body characteristics related to variations in marine influence, Middle Jurassic of the Cleveland Basin, UK, and the implications for analogous Brent Group strata in the North Sea Basin / Geological Society, London, Special Publications, 61:149-167, doi:10.1144/GSL.SP.1992.061.01.09 --- M. F. Whitaker, M. R. Giles, and S. J. C. Cannon: Palynological review of the Brent Group, UK sector, north sea / Geological Society, London, Special Publications, 61:169-202, doi:10.1144/GSL.SP.1992.061.01.10 --- Gwydion Williams: Palynology as a palaeoenvironmental indicator in the Brent Group, northern North Sea / Geological Society, London, Special Publications, 61:203-212, doi:10.1144/GSL.SP.1992.061.01.11 --- Euan W. Mearns: Samarium-neodymium isotopic constraints on the provenance of the Brent Group / Geological Society, London, Special Publications, 61:213-225, doi:10.1144/GSL.SP.1992.061.01.12 --- A. C. Morton: Provenance of Brent Group sandstones: heavy mineral constraints / Geological Society, London, Special Publications, 61:227-244, doi:10.1144/GSL.SP.1992.061.01.13 --- K. Stattegger and A. C. Morton: Statistical analysis of garnet compositions and lithostratigraphic correlation: Brent Group sandstones of the Oseberg Field, northern North Sea / Geological Society, London, Special Publications, 61:245-262, doi:10.1144/GSL.SP.1992.061.01.14 --- Knut Bjørlykke, Tor Nedkvitne, Mogens Ramm, and Girish C. Saigal: Diagenetic processes in the Brent Group (Middle Jurassic) reservoirs of the North Sea: an overview / Geological Society, London, Special Publications, 61:263-287, doi:10.1144/GSL.SP.1992.061.01.15 --- M. R. Giles, S. Stevenson, S. V. Martin, S. J. C. Cannon, P. J. Hamilton, J. D. Marshall, and G. M. Samways: The reservoir properties and diagenesis of the Brent Group: a regional perspective / Geological Society, London, Special Publications, 61:289-327, doi:10.1144/GSL.SP.1992.061.01.16 --- J. Reed Glasmann: The fate of feldspar in Brent Group reservoirs, North Sea: a regional synthesis of diagenesis in shallow, intermediate, and deep burial environments / Geological Society, London, Special Publications, 61:329-350, doi:10.1144/GSL.SP.1992.061.01.17 --- Nicholas B. Harris: Burial diagenesis of Brent sandstones: a study of Statfjord, Hutton and Lyell fields / Geological Society, London, Special Publications, 61:351-375, doi:10.1144/GSL.SP.1992.061.01.18 --- P. J. Hamilton, M. R. Giles, and P. Ainsworth: K-Ar dating of illites in Brent Group reservoirs: a regional perspective / Geological Society, London, Special Publications, 61:377-400, doi:10.1144/GSL.SP.1992.061.01.19 --- R. Stuart Haszeldine, J. F. Brint, A. E. Fallick, P. J. Hamilton, and S. Brown: Open and restricted hydrologies in Brent Group diagenesis: North Sea / Geological Society, London, Special Publications, 61:401-419, doi:10.1144/GSL.SP.1992.061.01.20 --- A. J. C. Hogg, E. Sellier, and A. J. Jourdan: Cathodoluminescence of quartz cements in Brent Group sandstones, Alwyn South, UK North Sea / Geological Society, London, Special Publications, 61:421-440, doi:10.1144/GSL.SP.1992.061.01.21 --- Stephen Larter and Idar Horstad: Migration of petroleum into Brent Group reservoirs: some observations from the Gullfaks field, Tampen Spur area North Sea / Geological Society, London, Special Publications, 61:441-452, doi:10.1144/GSL.SP.1992.061.01.22 --- J. D. Kantorowicz, M. R. P. Eigner, S. E. Livera, F. S. Van Schijndel-Goester, and P. J. Hamilton: Integration of petroleum engineering studies of producing Brent Group fields to predict reservoir properties in the Pelican Field, UK North Sea / Geological Society, London, Special Publications, 61:453-469, doi:10.1144/GSL.SP.1992.061.01.23 --- Brian Moss: The petrophysical characteristics of the Brent sandstones / Geological Society, London, Special Publications, 61:471-496, doi:10.1144/GSL.SP.1992.061.01.24 --- Erratum --- Erratum: Brent Group: sequence stratigraphy and regional implications / Geological Society, London, Special Publications, 61:ERR, doi:10.1144/GSL.SP.1992.061.01.26
    Pages: Online-Ressource (506 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 0903317680
    URL: http://sp.lyellcollection.org/content/61/1
    Language: English
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  • 2
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    The performance of leaching experiments to assess the potential mobilization of trace elements during CO2 injection (2020)
    Elsevier
    Details
    Publication Date: 2020-09-01
    Print ISSN: 0883-2927
    Electronic ISSN: 1872-9134
    Topics: Chemistry and Pharmacology , Geosciences
    Published by Elsevier
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  • 3
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    CO2 sequestration in a UK North Sea analogue for geological carbon storage (2013)
    Geological Society of America (GSA)
    In: Geology
    Details
    Publication Date: 2013-03-22
    Description: The Fizzy discovery, a southern North Sea (UK) gas accumulation with ~50% natural CO 2 content, provides an opportunity to study the long-term quantity of CO 2 -related mineral reaction as an analogue for engineered CO 2 storage. The reservoir contains diagenetic dolomite typical of the formation; to identify and quantify any sequestration-related dolomite is challenging. To this end, CO 2 was extracted by stepwise extraction from dolomite from both the Fizzy discovery and equivalent sandstones from a low-CO 2 location. Between 0% and 22% of the dolomite in the Fizzy discovery precipitated due to the high CO 2 concentration. This corresponds to 11% ± 8% of the recent high-CO 2 charge sequestered as dolomite, a relatively low proportion after ~50 m.y. of potential CO 2 -water-rock interaction.
    Print ISSN: 0091-7613
    Electronic ISSN: 1943-2682
    Topics: Geosciences
    Published by Geological Society of America (GSA)
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  • 4
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    Aliphatic Halogen Compounds. I. Conversion of Carbonyl Halides into Tetrahalomethanes1 (1957)
    American Chemical Society
    Details
    Publication Date: 1957-11-01
    Print ISSN: 0002-7863
    Electronic ISSN: 1520-5126
    Topics: Chemistry and Pharmacology
    Published by American Chemical Society
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  • 5
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    Assessing the health risks of natural CO2 seeps in Italy (2011)
    National Academy of Sciences
    Details
    Publication Date: 2011-09-12
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 6
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    Assessing the health risks of natural CO2 seeps in Italy [Environmental Sciences] (2011)
    National Academy of Sciences
    Details
    Publication Date: 2011-10-05
    Description: Industrialized societies which continue to use fossil fuel energy sources are considering adoption of Carbon Capture and Storage (CCS) technology to meet carbon emission reduction targets. Deep geological storage of CO2 onshore faces opposition regarding potential health effects of CO2 leakage from storage sites. There is no experience of commercial scale CCS with which to verify predicted risks of engineered storage failure. Studying risk from natural CO2 seeps can guide assessment of potential health risks from leaking onshore CO2 stores. Italy and Sicily are regions of intense natural CO2 degassing from surface seeps. These seeps exhibit a variety of expressions, characteristics (e.g., temperature/flux), and location environments. Here we quantify historical fatalities from CO2 poisoning using a database of 286 natural CO2 seeps in Italy and Sicily. We find that risk of human death is strongly influenced by seep surface expression, local conditions (e.g., topography and wind speed), CO2 flux, and human behavior. Risk of accidental human death from these CO2 seeps is calculated to be 10-8 year-1 to the exposed population. This value is significantly lower than that of many socially accepted risks. Seepage from future storage sites is modeled to be less that Italian natural flux rates. With appropriate hazard management, health risks from unplanned seepage at onshore storage sites can be adequately minimized.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 7
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    Oil charge preserves exceptional porosity in deeply buried, overpressured, sandstones: Central North Sea, UK (2011)
    Geological Society of London
    Details
    Publication Date: 2011-10-26
    Description: : Exceptionally high-porosity sandstones are reported from oil provinces worldwide, yet the mechanism of porosity preservation remains controversial. We present strong evidence that the exceptional porosities in the Jurassic Fulmar Formation within the North Sea are the result of early oil charging preventing cementation and chemical compaction in sands with relatively low detrital clay contents, although overpressure and grain coatings do have some effect. The most dramatic evidence that reservoir quality is related to early oil charge is the spatial distribution of the porosity: the maximum porosity of the Fulmar Formation is systematically highest immediately below the top seal, and decreases below this despite uniform sedimentology. Hence, porosity is preferentially preserved where oil first accumulated in these unusually homogeneous overpressured reservoir sandstones, at the top. Oil charge prevents or significantly retards chemical compaction and cementation of a reservoir, preserving porosity. There is independent evidence for early oil charging of reservoirs within the Central Graben, from fluid inclusion studies and K–Ar age dates of authigenic illite. Micro-quartz grain coatings, which have been proposed to preserve porosity during burial, are associated with only 5% extra porosity in sands that exceed the worldwide average sandstone porosity by almost 20%.
    Print ISSN: 0016-7649
    Topics: Geosciences
    Published by Geological Society of London
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  • 8
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    Oil charge preserves exceptional porosity in deeply buried, overpressured, sandstones: Central North Sea, UK (2011)
    Geological Society of London
    Details
    Publication Date: 2011-12-01
    Description: Exceptionally high-porosity sandstones are reported from oil provinces worldwide, yet the mechanism of porosity preservation remains controversial. We present strong evidence that the exceptional porosities in the Jurassic Fulmar Formation within the North Sea are the result of early oil charging preventing cementation and chemical compaction in sands with relatively low detrital clay contents, although overpressure and grain coatings do have some effect. The most dramatic evidence that reservoir quality is related to early oil charge is the spatial distribution of the porosity: the maximum porosity of the Fulmar Formation is systematically highest immediately below the top seal, and decreases below this despite uniform sedimentology. Hence, porosity is preferentially preserved where oil first accumulated in these unusually homogeneous overpressured reservoir sandstones, at the top. Oil charge prevents or significantly retards chemical compaction and cementation of a reservoir, preserving porosity. There is independent evidence for early oil charging of reservoirs within the Central Graben, from fluid inclusion studies and K-Ar age dates of authigenic illite. Micro-quartz grain coatings, which have been proposed to preserve porosity during burial, are associated with only 5% extra porosity in sands that exceed the worldwide average sandstone porosity by almost 20%.
    Print ISSN: 0016-7649
    Topics: Geosciences
    Published by Geological Society of London
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  • 9
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    Deep burial dissolution of K-feldspars in a fluvial sandstone, Pentland Formation, UK Central North Sea (2014)
    Geological Society of London
    Details
    Publication Date: 2014-09-02
    Description: The Pentland Formation of the UK Central North Sea is a quartzite in a sequence of more arkosic sandstones. Provenance-sensitive heavy mineral indices are interpreted to indicate that it was probably derived by erosion of arkosic sediments, which also supplied the arkosic marine sandstones of the contemporaneous Fulmar Formation. A lack of apatite within the Pentland Formation suggests that the feldspars could have dissolved during exposure to groundwaters during very shallow burial. However, petrographic and geochemical evidence supports survival of at least some of the feldspar to burial depths in excess of at least 2 km, when the sandstones had been stabilized against compaction by quartz cements or overpressure. Abundant kaolin, which has not reacted to form illite, is preserved at burial depths in excess of 4000 m, suggesting an unusual lack of available potassium. There is a strong contrast in diagenetic pathways with the overlying marine Fulmar Formation, which most probably had the same initial composition but in which kaolin is absent and fibrous illite is present. It is suggested that a lower concentration of potassium (and aluminium) within the Pentland Formation compared with the probable source and the comparably sourced Fulmar Formation represents export of K from the sands on a metre scale.
    Print ISSN: 0016-7649
    Topics: Geosciences
    Published by Geological Society of London
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  • 10
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    Natural CO2 sites in Italy show the importance of overburden geopressure, fractures and faults for CO2 storage performance and risk management (2017)
    Geological Society (of London)
    Details
    Publication Date: 2017-06-24
    Description: The study of natural analogues can inform the long-term performance security of engineered CO 2 storage. There are natural CO 2 reservoirs and CO 2 seeps in Italy. Here, we study nine reservoirs and establish which are sealed or are leaking CO 2 to surface. Their characteristics are compared to elucidate which conditions control CO 2 leakage. All of the case studies would fail current CO 2 storage site selection criteria, although only two leak CO 2 to surface. The factors found to systematically affect seal performance are overburden geopressure and proximity to modern extensional faults. Amongst our case studies, the sealing reservoirs show elevated overburden geopressure whereas the leaking reservoirs do not. Since the leaking reservoirs are located within 〈10 km of modern extensional faults, pressure equilibration within the overburden may be facilitated by enhanced crustal permeability related to faulting. Modelling of the properties that could enable the observed CO 2 leakage rates finds that high-permeability pathways (such as transmissive faults or fractures) become increasingly necessary to sustain leak rates as CO 2 density decreases during ascent to surface, regardless of the leakage mechanism into the overburden. This work illustrates the value of characterizing the overburden geology during CO 2 storage site selection to inform screening criterion, risk assessment and monitoring strategy.
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
    Published by Geological Society (of London)
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