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  • 1
    Call number: 9/M 07.0421(435)
    In: Geological Society Special Publication
    Description / Table of Contents: Abstract Reservoir quality is studied using a wide range of similar techniques in both sandstones and carbonates. Sandstone and carbonate reservoir quality both benefit from the study of modern analogues and experiments, but modelling approaches are currently quite different for these two types of reservoirs. There are many common controls on sandstone and carbonate reservoir quality, but also distinct differences due primarily to mineralogy. Numerous controversies remain including the question of oil inhibition, the key control on pressure solution and geochemical flux of material to or from reservoirs. This collection of papers contains case-study-based examples of sandstone and carbonate reservoir quality prediction as well as modern analogue, outcrop analogue, modelling and advanced analytical approaches.
    Type of Medium: Monograph available for loan
    Pages: 453 Seiten , farbige Abbildungen, Tabellen, Grafiken
    ISBN: 978-1-78620-139-3
    Series Statement: Geological Society Special Publication 435
    Language: English
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Keywords: reservoir quality ; petroleum reservoirs ; carbonate rocks ; carbonate reservoirs
    Description / Table of Contents: Petroleum reservoir quality prediction: overview and contrasting approaches from sandstone and carbonate communities / R. H. Worden, P. J. Armitage, A. R. Butcher, J. M. Churchill, A. E. Csoma, C. Hollis, R. H. Lander and J. E. Omma / Geological Society, London, Special Publications, 435, 1-31, 1 May 2018, https://doi.org/10.1144/SP435.21 --- Diagenetic pathways linked to labile Mg-clays in lacustrine carbonate reservoirs: a model for the origin of secondary porosity in the Cretaceous pre-salt Barra Velha Formation, offshore Brazil / Nicholas J. Tosca and V. Paul Wright / Geological Society, London, Special Publications, 435, 33-46, 20 November 2015, https://doi.org/10.1144/SP435.1 --- Origin and evolution of microporosity in packstones and grainstones in a Lower Cretaceous carbonate reservoir, United Arab Emirates / Daniel Morad, Matteo Paganoni, Amena Al Harthi, Sadoon Morad, Andrea Ceriani, Howri Mansurbeg, Aisha Al Suwaidi, Ihsan S. Al-Aasm and Stephen N. Ehrenberg / Geological Society, London, Special Publications, 435, 47-66, 21 December 2016, https://doi.org/10.1144/SP435.20 --- Distinguishing between eogenetic, unconformity-related and mesogenetic dissolution: a case study from the Panna and Mukta fields, offshore Mumbai, India / A. J. Barnett, V. P. Wright, V. S. Chandra and V. Jain / Geological Society, London, Special Publications, 435, 67-84, 18 December 2015, https://doi.org/10.1144/SP435.12 --- Role of facies diversity and cyclicity on the reservoir quality of the mid-Cretaceous Mishrif Formation in the southern Mesopotamian Basin, Iraq / Thamer A. Mahdi and Adnan A. M. Aqrawi / Geological Society, London, Special Publications, 435, 85-105, 22 February 2017, https://doi.org/10.1144/SP435.19 --- Burial estimates constrained by clumped isotope thermometry: example of the Lower Cretaceous Qishn Formation (Haushi-Huqf High, Oman) / Cédric M. John / Geological Society, London, Special Publications, 435, 107-121, 18 November 2015, https://doi.org/10.1144/SP435.5 --- Feldspar alteration and Fe minerals: origin, distribution and implications for sandstone reservoir quality in estuarine sediments / Ehsan Daneshvar and Richard H. Worden / Geological Society, London, Special Publications, 435, 123-139, 13 April 2017, https://doi.org/10.1144/SP435.17 --- Evolution of small-scale flow barriers in German Rotliegend siliciclastics / Benjamin Busch, Rebecca Winkler, Keyvan Osivandi, Georg Nover, Alexandra Amann-Hildenbrand and Christoph Hilgers / Geological Society, London, Special Publications, 435, 141-160, 18 November 2015, https://doi.org/10.1144/SP435.3 --- Deformation band development as a function of intrinsic host-rock properties in Triassic Sherwood Sandstone / Joshua Griffiths, Daniel R. Faulkner, Alexander P. Edwards and Richard H. Worden / Geological Society, London, Special Publications, 435, 161-176, 19 January 2016, https://doi.org/10.1144/SP435.11 --- Diagenetic controls on the location of reservoir sweet spots relative to palaeotopographical and structural highs / Jessica E. Poteet, Robert H. Goldstein and Evan K. Franseen / Geological Society, London, Special Publications, 435, 177-215, 21 December 2016, https://doi.org/10.1144/SP435.18 --- Evaluation of porosity change during chemo-mechanical compaction in flooding experiments on Liège outcrop chalk / Wenxia Wang, Merete V. Madland, Udo Zimmermann, Anders Nermoen, Reidar I. Korsnes, Silvana R. A. Bertolino and Tania Hildebrand-Habel / Geological Society, London, Special Publications, 435, 217-234, 26 October 2016, https://doi.org/10.1144/SP435.10 --- Hydrothermal dolomitization: simulation by reaction transport modelling / Alberto Consonni, Alfredo Frixa and Chiara Maragliulo / Geological Society, London, Special Publications, 435, 235-244, 14 June 2016, https://doi.org/10.1144/SP435.13 --- Reservoir quality prediction of deep-water Oligocene sandstones from the west Niger Delta by integrated petrological, petrophysical and basin modelling / O. K. Chudi, Helen Lewis, D. A. V. Stow and J. O. Buckman / Geological Society, London, Special Publications, 435, 245-264, 14 December 2016, https://doi.org/10.1144/SP435.8 --- Diagenesis, plagioclase dissolution and preservation of porosity in Eocene and Oligocene sandstones at the Greeley oil field, southern San Joaquin basin, California, USA / D. T. Nguyen, R. A. Horton and A. B. Kaess / Geological Society, London, Special Publications, 435, 265-282, 28 June 2016, https://doi.org/10.1144/SP435.14 --- History of hydrothermal fluid flow in the midcontinent, USA: the relationship between inverted thermal structure, unconformities and porosity distribution / Bradley D. King and Robert H. Goldstein / Geological Society, London, Special Publications, 435, 283-320, 17 August 2016, https://doi.org/10.1144/SP435.16 --- Enhanced porosity preservation by pore fluid overpressure and chlorite grain coatings in the Triassic Skagerrak, Central Graben, North Sea, UK / Stephan Stricker and Stuart J. Jones / Geological Society, London, Special Publications, 435, 321-341, 5 January 2016, https://doi.org/10.1144/SP435.4 --- Deciphering multiple controls on reservoir quality and inhibition of quartz cement in a complex reservoir: Ordovician glacial sandstones, Illizi Basin, Algeria / Martin Wells, Philip Hirst, Jon Bouch, Emma Whear and Nigel Clark / Geological Society, London, Special Publications, 435, 343-372, 11 December 2015, https://doi.org/10.1144/SP435.6 --- Trace element composition of authigenic quartz in sandstones and its correlation with fluid–rock interaction during diagenesis / Thomas Götte / Geological Society, London, Special Publications, 435, 373-387, 19 January 2016, https://doi.org/10.1144/SP435.2 --- Comparing clay mineral diagenesis in interbedded sandstones and mudstones, Vienna Basin, Austria / Susanne Gier, Richard H. Worden and Peter Krois / Geological Society, London, Special Publications, 435, 389-403, 20 November 2015, https://doi.org/10.1144/SP435.9 --- The relevance of dawsonite precipitation in CO2 sequestration in the Mihályi-Répcelak area, NW Hungary / Csilla Király, Eszter Sendula, Ágnes Szamosfalvi, Réka Káldos, Péter Kónya, István J. Kovács, Judit Füri, Zsolt Bendő and György Falus / Geological Society, London, Special Publications, 435, 405-418, 20 June 2016, https://doi.org/10.1144/SP435.15 --- Reactive transport modelling of compacting siliciclastic sediment diagenesis / C. Geloni, A. Ortenzi and A. Consonni / Geological Society, London, Special Publications, 435, 419-439, 10 December 2015, https://doi.org/10.1144/SP435.7
    Pages: Online-Ressource (VI, 453 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 9781786201393
    Language: English
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  • 3
    Publication Date: 2017-02-27
    Description: Past warm periods provide an opportunity to evaluate climate models under extreme forcing scenarios, in particular high ( 〉  800 ppmv) atmospheric CO2 concentrations. Although a post hoc intercomparison of Eocene ( ∼  50  Ma) climate model simulations and geological data has been carried out previously, models of past high-CO2 periods have never been evaluated in a consistent framework. Here, we present an experimental design for climate model simulations of three warm periods within the early Eocene and the latest Paleocene (the EECO, PETM, and pre-PETM). Together with the CMIP6 pre-industrial control and abrupt 4 ×  CO2 simulations, and additional sensitivity studies, these form the first phase of DeepMIP – the Deep-time Model Intercomparison Project, itself a group within the wider Paleoclimate Modelling Intercomparison Project (PMIP). The experimental design specifies and provides guidance on boundary conditions associated with palaeogeography, greenhouse gases, astronomical configuration, solar constant, land surface processes, and aerosols. Initial conditions, simulation length, and output variables are also specified. Finally, we explain how the geological data sets, which will be used to evaluate the simulations, will be developed.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 4
    Publication Date: 2016-08-16
    Description: Carbonate reservoir rocks exhibit a great variability in texture that directly impacts petrophysical parameters. Many exhibit bi- and multimodal pore networks, with pores ranging from less than 1 μm to several millimeters in diameter. Furthermore, many pore systems are too large to be captured by routine core analysis, and well logs average total porosity over different volumes. Consequently, prediction of carbonate properties from seismic data and log interpretation is still a challenge. In particular, amplitude versus offset classification systems developed for clastic rocks, which are dominated by connected, intergranular, unimodal pore networks, are not applicable to carbonate rocks. Pore geometrical parameters derived from digital image analysis (DIA) of thin sections were recently used to improve the coefficient of determination of velocity and permeability versus porosity. Although this substantially improved the coefficient of determination, no spatial information of the pore space was considered, because DIA parameters were obtained from two-dimensional analyses. Here, we propose a methodology to link local and global pore-space parameters, obtained from three-dimensional (3-D) images, to experimental physical properties of carbonate rocks to improve P-wave velocity and permeability predictions. Results show that applying a combination of porosity, microporosity, and 3-D geometrical parameters to P-wave velocity significantly improves the adjusted coefficient of determination from 0.490 to 0.962. A substantial improvement is also observed in permeability prediction (from 0.668 to 0.948). Both results can be interpreted to reflect a pore geometrical control and pore size control on P-wave velocity and permeability.
    Print ISSN: 0149-1423
    Electronic ISSN: 0149-1423
    Topics: Geosciences
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  • 5
    Publication Date: 2015-04-25
    Description: The Mead Stream section (South Island, New Zealand) consists of a 650-m-thick series of continuous, well-exposed strata deposited on a South Pacific continental slope from the Late Cretaceous to the middle Eocene. We examined the uppermost Paleocene–middle Eocene part of the section, which consists of ~360 m of limestone and marl, for detailed magnetic polarity stratigraphy and calcareous nannofossil and foraminifera biostratigraphy. Magneto-biostratigraphic data indicate that the section straddles magnetic polarity chrons from C24r to C18n, calcareous nannofossil zones from NP9a to NP17 (CNP11–CNE15, following a recently revised Paleogene zonation), and from the Waipawan to the Bortonian New Zealand stages (i.e., from the base of the Ypresian to the Bartonian international stages). The Mead Stream section thus encompasses 17 m.y. (56–39 Ma) of southwest Pacific Ocean history. The ages of calcareous nannofossil biohorizons are consistent with low- to midlatitude data from the literature, indicating that during the early–middle Eocene, the low- to midlatitude calcareous nannofossil domain extended at least to ~50°S–55°S in the South Pacific. Correlation of the magnetic polarity stratigraphy from the Mead Stream section with the geomagnetic polarity time scale allows us to derive sediment accumulation rates (SAR), which range between 8 and 44 m/m.y. Comparing the SAR with paleotemperature proxy records, we found that two intervals of increased SAR occurred during the early Eocene climatic optimum (52–50 Ma) and during the transient warming event peaking with the middle Eocene climatic optimum (40.5 Ma). This correlation indicates that, at Mead Stream, the climate evolution of the early–middle Eocene is recorded in a sedimentation pattern whereby, on a million-year time scale, warmer climate promoted continental weathering, transportation, and accumulation of terrigenous sediments.
    Print ISSN: 0016-7606
    Electronic ISSN: 1943-2674
    Topics: Geosciences
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  • 6
    Publication Date: 2016-05-04
    Description: The Mississippian North Wales Platform is located on the margins of the East Irish Sea Basin and has been little studied over the last 30 years. The exposed Visean limestones provide new insights into the deposition, porosity evolution, distribution of dolomitization, and Pb–Zn and Cu mineralization on the North Wales carbonate platform. This is of relevance to the characterization of fault-related dolomite hydrocarbon reservoirs and age-equivalent Mississippi Valley-type mineral deposits. In particular, the study demonstrates the intimate relationship between sedimentation, basin-scale tectonism and post-depositional fluid flux. Depositional cyclicity is marked, with metre-scale upward-shallowing cycles in which pervasive marine and meteoric calcite cements occlude matrix porosity and syndepositional fractures. Consequently, subsequent burial diagenetic replacive dolomitization is matrix selective and cements are primarily restricted to fractures. Seven phases of dolomite are defined based on texture and cathodoluminescence petrography, with phases D1–D3 as the most volumetrically significant. Dolomite phases D0–D2 are matrix replacive, cross-cutting stratigraphy and locally fingering along beds for several metres. Dolomite phases D3–D7 are hosted by faults and fractures and also line vugs. Evidence of telogenesis is recorded where burial diagenetic products are post-dated by calcite cements precipitated from meteoric fluids. Dolomitization probably occurred during the Mississippian and continued into the Pennsylvanian. Pb–Zn mineralization is also interpreted to have occurred during the Pennsylvanian, associated with Variscan tectonism. Overall, the North Wales Platform displays a more complex paragenesis than age-equivalent platforms in the Pennine Basin, owing to multiple phases of burial and exhumation. The study demonstrates the importance of linking burial history to detailed field and petrographical data to understand and predict the spatial and temporal controls on diagenetic processes and products within syn- and post-rift sequences.
    Print ISSN: 0016-7649
    Topics: Geosciences
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  • 7
    Publication Date: 2018-05-03
    Description: The porosity and permeability of sandstone and carbonate reservoirs (known as reservoir quality) are essential inputs for successful oil and gas resource exploration and exploitation. This chapter introduces basic concepts, analytical and modelling techniques and some of the key controversies to be discussed in 20 research papers that were initially presented at a Geological Society conference in 2014 titled ‘Reservoir Quality of Clastic and Carbonate Rocks: Analysis, Modelling and Prediction’. Reservoir quality in both sandstones and carbonates is studied using a wide range of techniques: log analysis and petrophysical core analysis, core description, routine petrographic tools and, ideally, less routine techniques such as stable isotope analysis, fluid inclusion analysis and other geochemical approaches. Sandstone and carbonate reservoirs both benefit from the study of modern analogues to constrain the primary character of sediment before they become a hydrocarbon reservoir. Prediction of sandstone and carbonate reservoir properties also benefits from running constrained experiments to simulate diagenetic processes during burial, compaction and heating. There are many common controls on sandstone and carbonate reservoir quality, including environment of deposition, rate of deposition and rate and magnitude of sea-level change, and many eogenetic processes. Compactional and mesogenetic processes tend to affect sandstone and carbonate somewhat differently but are both influenced by rate of burial, and the thermal and pressure history of a basin. Key differences in sandstone and carbonate reservoir quality include the specific influence of stratigraphic age on seawater composition (calcite v. aragonite oceans), the greater role of compaction in sandstones and the greater reactivity and geochemical openness of carbonate systems. Some of the key controversies in sandstone and carbonate reservoir quality focus on the role of petroleum emplacement on diagenesis and porosity loss, the role of effective stress in chemical compaction (pressure solution) and the degree of geochemical openness of reservoirs during diagenesis and cementation. This collection of papers contains case study-based examples of sandstone and carbonate reservoir quality prediction as well as modern analogue, outcrop analogue, modelling and advanced analytical approaches.
    Print ISSN: 0305-8719
    Electronic ISSN: 2041-4927
    Topics: Geosciences
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  • 8
    Publication Date: 2017-02-23
    Description: There are numerous examples of fault-controlled, so-called hydrothermal dolomite (HTD), many of which host economic mineral deposits or hydrocarbons, but there remains a lack of consensus as to how they form. In particular, multiple phases of diagenetic overprinting can obscure geochemical fingerprints. Study of a Cenozoic succession with a relatively simple burial history here provides new insights into the development of differentially dolomitized beds. The Hammam Faraun fault (HFF) block within the Suez Rift, Egypt, hosts both massive and stratabound dolostone bodies. Non-fabric-selective massive dolostone is limited to the damage zone of the fault, while fabric-selective stratabound dolostone bodies penetrate nearly 2 km into the footwall. Oligo-Miocene seawater is interpreted to have been drawn down discrete faults into a deep aquifer and convected upwards along the HFF. Escape of fluids from the incipient HFF into the lower Thebes Formation led to differential, stratabound dolomitization. Once the HFF breached the surface, fluid circulation focused along the fault plane to form younger, massive dolostone bodies. This study provides a snapshot of dolomitization during the earliest phases of extension, unobscured by subsequent recrystallization and geochemical modification. Contrary to many models, stratabound dolomitization preceded non-stratabound dolomitization. Fluids were hydrothermal, but with little evidence for rapid cooling and brecciation common to many HTD bodies. These results suggest that many of the features used to interpret and predict the geometry of HTD in the subsurface form during later phases of structural deformation, perhaps overprinting less structurally complex dolomite bodies.
    Print ISSN: 0091-7613
    Electronic ISSN: 1943-2682
    Topics: Geosciences
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  • 9
    Publication Date: 2017-03-08
    Description: Eocene onset of subduction in the western Pacific was accompanied by a global reorganization of tectonic plates and a change in Pacific plate motion relative to hotspots during the period 52–43 Ma. We present seismic-reflection and rock sample data from the Tasman Sea that demonstrate that there was a period of widespread Eocene continental and oceanic compressional plate failure after 53–48 Ma that lasted until at least 37–34 Ma. We call this the Tectonic Event of the Cenozoic in the Tasman Area (TECTA). Its compressional nature is different from coeval tensile stresses and back-arc opening after 50 Ma in the Izu-Bonin-Mariana region. Our observations imply that spatial and temporal patterns of stress evolution during western Pacific Eocene subduction initiation were more varied than previously recognized. The evolving Eocene geometry of plates and boundaries played an important role in determining regional differences in stress state.
    Print ISSN: 0091-7613
    Electronic ISSN: 1943-2682
    Topics: Geosciences
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  • 10
    Publication Date: 2016-03-01
    Print ISSN: 0037-0738
    Electronic ISSN: 1879-0968
    Topics: Geosciences
    Published by Elsevier
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