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Characterization of Fluvial and Aeolian Reservoirs (1993)

Geological Society (London, U.K.) ; North, Colin P. ; Prosser, D. Jeremy

London : The Geological Society

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Keywords: Fluviale Sedimentation ; Äolische Sedimentation ; Sédimentation (géologie) ; Aquatisches Sediment

Description / Table of Contents: Colin P. North and D. Jeremy Prosser: Characterization of fluvial and aeolian reservoirs: problems and approaches / Geological Society, London, Special Publications, 73:1-6, doi:10.1144/GSL.SP.1993.073.01.01 --- Fluvial Reservoirs --- M. R. Leeder: Tectonic controls upon drainage basin development, river channel migration and alluvial architecture: implications for hydrocarbon reservoir development and characterization / Geological Society, London, Special Publications, 73:7-22, doi:10.1144/GSL.SP.1993.073.01.02 --- Mary J. Kraus and Thomas M. Bown: Palaeosols and sandbody prediction in alluvial sequences / Geological Society, London, Special Publications, 73:23-31, doi:10.1144/GSL.SP.1993.073.01.03 --- T. Salter: Fluvial scour and incision: models for their influence on the development of realistic reservoir geometries / Geological Society, London, Special Publications, 73:33-51, doi:10.1144/GSL.SP.1993.073.01.04 --- Judith K. Maizels: Quantitative regime modelling of fluvial depositional sequences: application to Holocene stratigraphy of humid-glacial braid-plains (Icelandic sandurs) / Geological Society, London, Special Publications, 73:53-78, doi:10.1144/GSL.SP.1993.073.01.05 --- M. C. Cuevas Gozalo and A. W. Martinius: Outcrop data-base for the geological characterization of fluvial reservoirs: an example from distal fluvial fan deposits in the Loranca Basin, Spain / Geological Society, London, Special Publications, 73:79-94, doi:10.1144/GSL.SP.1993.073.01.06 --- David K. Davies, Brian P. J. Williams, and Richard K. Vessell: Dimensions and quality of reservoirs originating in low and high sinuosity channel systems, Lower Cretaceous Travis Peak Formation, East Texas, USA / Geological Society, London, Special Publications, 73:95-121, doi:10.1144/GSL.SP.1993.073.01.07 --- J. Alexander and R. L. Gawthorpe: The complex nature of a Jurassic multistorey, alluvial sandstone body, Whitby, North Yorkshire / Geological Society, London, Special Publications, 73:123-142, doi:10.1144/GSL.SP.1993.073.01.08 --- Julie A. Jones and Adrian J. Hartley: Reservoir characteristics of a braid-plain depositional system: the Upper Carboniferous Pennant Sandstone of South Wales / Geological Society, London, Special Publications, 73:143-156, doi:10.1144/GSL.SP.1993.073.01.09 --- S. B. Kelly: Cyclical discharge variation recorded in alluvial sediments: an example from the Devonian of southwest Ireland / Geological Society, London, Special Publications, 73:157-166, doi:10.1144/GSL.SP.1993.073.01.10 --- Aeolian Reservoirs --- Steven G. Fryberger: A review of aeolian bounding surfaces, with examples from the Permian Minnelusa Formation, USA / Geological Society, London, Special Publications, 73:167-197, doi:10.1144/GSL.SP.1993.073.01.11 --- Robert D. Herries: Contrasting styles of fluvial-aeolian interaction at a downwind erg margin: Jurassic Kayenta-Navajo transition, northeastern Arizona, USA / Geological Society, London, Special Publications, 73:199-218, doi:10.1144/GSL.SP.1993.073.01.12 --- Nigel H. Trewin: Mixed aeolian sandsheet and fluvial deposits in the Tumblagooda Sandstone, Western Australia / Geological Society, London, Special Publications, 73:219-230, doi:10.1144/GSL.SP.1993.073.01.13 --- Greig Cowan: Identification and significance of aeolian deposits within the dominantly fluvial Sherwood Sandstone Group of the East Irish Sea Basin UK / Geological Society, London, Special Publications, 73:231-245, doi:10.1144/GSL.SP.1993.073.01.14 --- Neil S. Meadows and Alastair Beach: Structural and climatic controls on facies distribution in a mixed fluvial and aeolian reservoir: the Triassic Sherwood Sandstone in the Irish Sea / Geological Society, London, Special Publications, 73:247-264, doi:10.1144/GSL.SP.1993.073.01.15 --- D. Ellis: The Rough Gas Field: distribution of Permian aeolian and non-aeolian reservoir facies and their impact on field development / Geological Society, London, Special Publications, 73:265-277, doi:10.1144/GSL.SP.1993.073.01.16 --- G. E. Strong: Diagenesis of Triassic Sherwood Sandstone Group rocks, Preston, Lancashire, UK: a possible evaporitic cement precursor to secondary porosity? / Geological Society, London, Special Publications, 73:279-289, doi:10.1144/GSL.SP.1993.073.01.17 --- Gareth T. George and Jeremy K. Berry: A new lithostratigraphy and depositional model for the Upper Rotliegend of the UK Sector of the Southern North Sea / Geological Society, London, Special Publications, 73:291-319, doi:10.1144/GSL.SP.1993.073.01.18 --- Structure --- Helen Lewis and Gary D. Couples: Production evidence for geological heterogeneities in the Anschutz Ranch East Field, western USA / Geological Society, London, Special Publications, 73:321-338, doi:10.1144/GSL.SP.1993.073.01.19 --- H. Ewart Edwards, Andrew D. Becker, and John A. Howell: Compartmentalization of an aeolian sandstone by structural heterogeneities: Permo-Triassic Hopeman Sandstone, Moray Firth, Scotland / Geological Society, London, Special Publications, 73:339-365, doi:10.1144/GSL.SP.1993.073.01.20 --- Methods --- L. W. Lake and M. A. Malik: Modelling fluid flow through geologically realistic media / Geological Society, London, Special Publications, 73:367-375, doi:10.1144/GSL.SP.1993.073.01.21 --- D. J. Prosser and R. Maskall: Permeability variation within aeolian sandstone: a case study using core cut sub-parallel to slipface bedding, the Auk Field, Central North Sea, UK / Geological Society, London, Special Publications, 73:377-397, doi:10.1144/GSL.SP.1993.073.01.22 --- D. Rey, P. Turner, and A. Yaliz: Palaeomagnetic study and magnetostratigraphy of the Triassic Skagerrak Formation, Crawford Field, UK North Sea / Geological Society, London, Special Publications, 73:399-420, doi:10.1144/GSL.SP.1993.073.01.23 --- R. L. Gawthorpe, R. E. Li Collier, J. Alexander, J. S. Bridge, and M. R. Leeder: Ground penetrating radar: application to sandbody geometry and heterogeneity studies / Geological Society, London, Special Publications, 73:421-432, doi:10.1144/GSL.SP.1993.073.01.24 --- P. W. M. Corbett and J. L. Jensen: Quantification of variability in laminated sediments: a role for the probe permeameter in improved reservoir characterization / Geological Society, London, Special Publications, 73:433-442, doi:10.1144/GSL.SP.1993.073.01.25

Pages: Online-Ressource (IV, 450 Seiten) , Illustrationen, Diagramme, Karten

ISBN: 0903317907

URL: http://sp.lyellcollection.org/content/73/1

Language: English

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Surface and subsurface sedimentary structures produced by salt crusts (2000)

Goodall, Timothy M. ; North, Colin P. ; Glennie, Kenneth W.

Oxford UK : Blackwell Publishing Ltd

Sedimentology 47 (2000), S. 0

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ISSN: 1365-3091

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Geosciences

Notes: The growth and subsequent dissolution of salts on or within sediment may alter sedimentary structures and textures to such an extent that it is difficult to identify the depositional origin of that sediment and, as a result, the sediment may be misinterpreted. To help to overcome such problems with investigating ancient successions, results are presented from a comprehensive study of the morphology and fabrics of three large areas of modern salt flats in SE Arabia: the Sabkhat Matti inland region and the At Taf coastal region, both in the Emirate of Abu Dhabi, and the Umm as Samim region in Oman. These salt flats are affected by tidal-marine, alluvial and aeolian depositional processes and include both clastic- and carbonate-dominated surficial sediments. The efflorescent and precipitated salt crusts in these areas can be grouped into two main types: thick crusts, with high relief (〉10 cm) and a polygonal or blocky morphology; or thin crusts, with low relief (〈10 cm) and a polygonal or blister-like appearance. The thin crusts may assume the surface morphology of underlying features, such as ripples or biogenic mats. A variety of small-scale textures were observed: pustular growths, hair-like spikes and irregular wrinkles. Evolution of these crusts over time results in a variety of distinctive sedimentary fabrics produced by salt-growth sediment deformation, salt-solution sediment collapse, sediment aggradation and compound mixtures of these processes. Salt-crust processes produce features that may be confused with aeolian adhesion structures. An example from the Lower Triassic Ormskirk Sandstone Formation of the Irish Sea Basin demonstrates how this knowledge of modern environments improves the interpretation of the rock record. A distinctive wavy-laminated facies in this formation had previously been interpreted as the product of fluvial sheetfloods modified by soft-sediment deformation and bioturbation. Close inspection of laminations seen in core reveals many of the same sedimentary fabrics seen in SE Arabia associated with salt crusts. This facies is the product of salt growth on aeolian sediment and is not of fluvial origin.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1046/j.1365-3091.2000.00279.x

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Bias in estimating fractal dimension with the rescaled-range (R/S) technique (1994)

North, Colin P. ; Halliwell, David I.

Springer

Mathematical geology 26 (1994), S. 531-555

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ISSN: 1573-8868

Keywords: geostatistics ; fractals ; spatial analysis ; permeability modeling

Source: Springer Online Journal Archives 1860-2000

Topics: Geosciences , Mathematics

Notes: Abstract Fractal geostatistics are being applied to subsurface geological data as a way of predicting the spatial distribution of hydrocarbon reservoir properties. The fractal dimension is the controlling parameter in stochastic methods to produce random fields of porosity and permeability. Rescaled range (R/S)analysis has become a popular way of estimating the fractal dimension, via determination of the Hurst exponent (H). A systematic investigation has been undertaken of the bias to be expected due to a range of factors commonly inherent in borehole data, particularly downhole wireline logs. The results are integrated with a review of previous work in this area. Small datasets. overlapping samples, drift and nonstationariry of means can produce a very large bias, and convergence of estimates of H around 0.85–0.90 regardless of original fractal dimension. Nonstationarity can also account for H〉1, which has been reported in the literature but which is theoretically impossible for fractal time series. These results call into question the validity of fractal stochastic models built using fractal dimensions estimated with the R/Smethod.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02089240

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