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  • 1
    Monograph available for loan
    Monograph available for loan
    London : Geological Society
    Associated volumes
    Call number: 9/M 07.0421(459)
    In: Geological Society Special Publication
    Type of Medium: Monograph available for loan
    Pages: 215 Seiten , Illustrationen
    ISBN: 9781786203212
    Series Statement: Geological Society Special Publication 459
    Classification:
    Geophysical Deep Sounding
    Language: English
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Keywords: subsurface deformation ; subseismic deformation
    Description / Table of Contents: Subseismic-scale reservoir deformation: introduction / M. Ashton, S. J. Dee and O. P. Wennberg / Geological Society, London, Special Publications, 459, 1-8, 21 September 2017, https://doi.org/10.1144/SP459.11 --- Characterization of deformation in porous sandstones --- A review of deformation bands in reservoir sandstones: geometries, mechanisms and distribution / Haakon Fossen, Roger Soliva, Gregory Ballas, Barbara Trzaskos, Carolina Cavalcante and Richard A. Schultz / Geological Society, London, Special Publications, 459, 9-33, 27 April 2017, https://doi.org/10.1144/SP459.4 --- Deformation in a North Sea Jurassic trap analysed using a triaxial plane strain experiment / Erling Rykkelid and Elin Skurtveit / Geological Society, London, Special Publications, 459, 35-57, 21 April 2017, https://doi.org/10.1144/SP459.1 --- Structural and petrophysical effects of overthrusting on highly porous sandstones: the Aztec Sandstone in the Buffington window, SE Nevada, USA / Luisa F. Zuluaga, Haakon Fossen, Gregory Ballas and Atle Rotevatn / Geological Society, London, Special Publications, 459, 59-77, 27 April 2017, https://doi.org/10.1144/SP459.8 --- Novel characterization techniques --- Fault core process and clay content derived from XRF analysis: Salina Creek Fault, Utah / Alton A. Brown, Russell K. Davies and Anne Covault Treverton / Geological Society, London, Special Publications, 459, 79-100, 9 May 2017, https://doi.org/10.1144/SP459.5 --- A brief introduction to the use of X-ray computed tomography (CT) for analysis of natural deformation structures in reservoir rocks / Ole Petter Wennberg and Lars Rennan / Geological Society, London, Special Publications, 459, 101-120, 12 May 2017, https://doi.org/10.1144/SP459.10 --- Quantifying and characterizing deformation in carbonates --- Predicting transmissibilities of carbonate-hosted fault zones / E. A. H. Michie, G. Yielding and Q. J. Fisher / Geological Society, London, Special Publications, 459, 121-137, 25 May 2017, https://doi.org/10.1144/SP459.9 --- Fracture analysis of outcrop analogues to support modelling of the subseismic domain in carbonate reservoirs, south-central Pyrenees / Jon Gutmanis, Lluís Ardèvol i Oró, Davinia Díez-Canseco, Lynda Chebbihi, Abdullah Awdal and Alexander Cook / Geological Society, London, Special Publications, 459, 139-156, 12 June 2017, https://doi.org/10.1144/SP459.2 --- Activation of stylolites as conduits for overpressured fluid flow in dolomitized platform carbonates / J. D. Martín-Martín, E. Gomez-Rivas, D. Gómez-Gras, A. Travé, R. Ameneiro, D. Koehn and P. D. Bons / Geological Society, London, Special Publications, 459, 157-176, 3 May 2017, https://doi.org/10.1144/SP459.3 --- Modelling small-scale features --- Simulation of subseismic joint and fault networks using a heuristic mechanical model / Paul Gillespie, Giulio Casini, Hayley Iben and James F. O'Brien / Geological Society, London, Special Publications, 459, 177-190, 21 April 2017, https://doi.org/10.1144/SP459.6 --- Well-data-based discrete fracture and matrix modelling and flow-based upscaling of multilayer carbonate reservoir horizons / Caroline Milliotte, Sima Jonoud, Ole Petter Wennberg, Stephan K. Matthäi, Alexandra Jurkiw and Lukas Mosser / Geological Society, London, Special Publications, 459, 191-210, 3 May 2017, https://doi.org/10.1144/SP459.7
    Pages: Online-Ressource (VII, 215 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 9781786203212
    Language: English
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  • 3
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    In:  Geological Society Special Publication 292: 259-270.
    Publication Date: 2008-01-02
    Description: Traditionally, the analysis of fault seal has been purely deterministic or a combination of deterministic and stochastic methods. In a deterministic model, prediction of the locations of reservoir overlaps is made from the static model of the reservoir horizon and fault geometry. The principal aim is to map faulted reservoir overlaps and determine their sealing character. This is usually performed using a predictive algorithm such as the shale gouge ratio (SGR) that relates the shale content of the formations that have moved past a point on the fault zone to the sealing capacity of the fault rock. Deterministic fault seal studies are sensitive to the uncertainties associated with mapping of horizons in proximity to faults and the inherent uncertainty in a static fault interpretation in both position and fault zone complexity. Uncertainty in the static structure model can be addressed by convolving uncertainty in throw magnitude with juxtapositions at the fault. However, this does not address the uncertainty in the distribution of reservoirs on either side of the fault. With stochastic models multiple realizations of the stratigraphy can be tested. Stochastic models capture the uncertainty in the position of the reservoir at the fault by allowing multiple realizations of stacking geometries, where the principal assumption is that these stacked reservoir zones are laterally continuous covering the entire likely fill area. Despite the conceptual differences between these two approaches to fault seal analysis, comparison of the predictions they make on the Ling Gu field shows a surprising degree of conformity. The cut-off used to determine the number of sand and shale beds in the stochastic workflow appears to account for seal by fault zone materials, since a conservative cut-off implies fewer sand beds with lower probability of leak and correlates with more shale in the section and higher SGR values.
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  • 4
    Publication Date: 2007-10-08
    Description: Predicting the effects of small-scale faults and fractures on reservoir behaviour requires a definition of their spatial distribution, orientation and mode. Elastic dislocation (ED) theory can predict the distribution of displacement, strain and stress in the rock volume surrounding major faults, from mapping of fault geometry and slip distribution in 3D seismic-reflection datasets. The intensity of small-scale faulting can be related to the predicted local strain, or the degree to which the shear stresses exceeded the rock failure envelope. We illustrate the methodology with three case studies: (i) a relatively-simple thrust anticline from Venezuela, where hydrocarbons are trapped in Pliocene sandstones within the faulted hanging wall anticline; (ii) the Gull-faks Field and of the North Sea; and (iii) the Miskar Field, offshore Tunisia, where large seismically mapped normal faults are forward-modelled to predict small-scale fault characteristics for comparison with detailed interpretation and seismic attribute analysis. Key requirements for the development of a robust predictive model of the small-scale fault and fracture network are a geometrically consistent framework model, judicious choice of mechanical properties, and a reasonable estimate of regional background strain.
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  • 5
    Publication Date: 2014-09-27
    Description: A normal-fault network from Milne Point, Alaska, is investigated focusing on characterizing geometry, displacement, strain, and different fault interactions. The network, constrained from three-dimensional seismic reflection data, comprises two generations of faults: Cenozoic north-northeast–trending faults and Jurassic west-northwest–trending faults, which highly compartmentalize Upper Triassic to Lower Cretaceous reservoirs. The west-northwest–trending faults are influenced by a similarly oriented underlying structural grain. This influence is characterized by increases in throw on several faults, strain localization, reorientation of faults and an increase in linkage maturity. Reconstructing fault plane geometries and mapping spatial variations in throw identified key characteristic features in their interactions and reactivation of pre-existing structures. Faults are divided into isolated, abutting, and splaying faults. Isolated faults exhibit a range of displacement profiles depending on the degree of restriction at fault tips. Fault splays accommodate step-like decreases in throw along larger main faults with a throw maximum at the intersection with the main fault. Throw profiles of abutting faults are divided into two groups: early stage abutting faults with throw minima at both the isolated and abutting tips, and developed abutting faults with throw maxima near the abutting tip. Developed abutting faults accumulate throw after initial abutment, locally reactivating and transferring throw onto the pre-existing fault. Two abutting faults can link kinematically by reactivating a segment of the pre-existing fault forming a trailing fault. The motion sense of the trailing fault can be synthetic or antithetic to the reactivated pre-existing fault, producing increases or decreases in the throw of the pre-existing fault, respectively.
    Print ISSN: 0149-1423
    Electronic ISSN: 0149-1423
    Topics: Geosciences
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  • 6
    Publication Date: 2017-09-23
    Description: This volume examines the current best practice and new challenges in reservoir characterization and modelling of small- to subseismic-scale deformation features through case studies, experimental results and modelling. The papers in this volume include contributions on four themes related to the small-scale deformation of hydrocarbon reservoirs: the characterization of deformation in porous sandstones; novel characterization techniques; quantifying and characterizing deformation in carbonates; and modelling small-scale features. It includes eight papers from the conference Small to Subseismic-Scale Reservoir Deformation, organized by the Petroleum Group of the Geological Society and held in London from 29 to 30 October 2014, plus two additional papers. The observations in this introduction reflect the authors’ experiences and opinions, presentations at the conference and the papers within this volume.
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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  • 7
    Publication Date: 2020-01-01
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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  • 8
    Publication Date: 1993-09-01
    Description: Vein formation occurred throughout a deformation sequence which involved early transpressive ductile deformation through to late-kinematic transpressive brittle structures which host a series of gold prospects. Fluid inclusion data from (S1) fabric parallel veins associated with early deformation suggest that a low-salinity aqueous fluid, with a mean salinity of 6.4 wt.%, was present during peak metamorphism, Pelite mineralogy and isochores constrain peak metamorphism to the lowermost part of the upper greenschist facies at 325 to 425°C and 1.4 to 3.4 kbar.Fluid inclusion data from auriferous and barren late-kinematic quartz veins, both containing unmixing assemblages of aqueo-carbonic inclusions with low salinities of ≈2.7 wt.% NaCl equiv., indicate unmixing occurred at 300°C and 1.5 kbar.Volatiles (CO2, N2, CH4) are observed in all the late-kinematic veins. The N2 contents of veins with elevated gold grades are typically higher than those with low gold grades. N2 reaches 8.7 mole% in a vein with 0.49−4.6 p.p.m. Au compared to
    Print ISSN: 0026-461X
    Electronic ISSN: 1471-8022
    Topics: Geosciences
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  • 9
    Publication Date: 1998-12-01
    Print ISSN: 0044-0604
    Electronic ISSN: 2041-4811
    Topics: Geosciences
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  • 10
    Publication Date: 2007-01-01
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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