Carbonate Reservoirs

Carbonate Reservoirs PDF

Author: Clyde H. Moore

Publisher: Elsevier Inc. Chapters

Published: 2013-08-12

Total Pages: 46

ISBN-13: 0128080973

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Sequence stratigraphic principals can be applied to carbonate rock sequences. Typical tropical shallow-water carbonate shelves lead to sequence boundary exposure across carbonate platforms, and carbonate deep water deposits during highstands. Rapid carbonate sedimentation across a shelf leads to vertical accretion during the TST and progradation during the HST. Reef-bound shelf margins tend to evolve into escarpment margins with megabreccia development on the slope. Examples are the Devonian of the Canning Basin and the Cretaceous of Mexico. Carbonate ramps typically develop lowstand prograding complexes. Cool-water carbonates develop ramp morphology, independent of light with no framework reefs, and parallel the sequence stratigraphic framework of siliciclastics. The cool water sediments of the Great Australian Bight is an example Mud mound sequences as seen in Morocco are generally independent of sea-level changes, so most sequence stratigraphic concepts are not applicable. In mixed carbonate-siliciclastic situations reciprocal sedimentation results with HST carbonates dominating in the basin and LST clastics dominating in the basin. Sequence stratigraphic concepts are generally not applicable to lacustrine carbonates, but lake dessication cycles present a similar stratigraphic framework as seen in the Tertiary Green River of the Western United States.

Carbonate Platforms

Carbonate Platforms PDF

Author: Maurice E. Tucker

Publisher: John Wiley & Sons

Published: 2009-04-15

Total Pages: 368

ISBN-13: 1444303848

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This volume also discusses the computer modelling of carbonate cycles and sequence analysis. This will prove an invaluable text for senior undergraduate and postgraduate students in the earth sciences in general and will also be of value to the professional researcher. Carbonate platforms contains contributions from an international authorship and the volume has been edited by one of the most respected names in the earth sciences. Areas covered include; early rifting deposition; examples from carbonate sequences of Sardinia (Cambrian) and Tuscany (Triassic-Jurassic), Italy; geometry and evolution of platform-margin bioclastic shoals, late Dinantian (Mississippian), Derbyshire, UK; cyclic sedimentation in cabonate and mixed carbonate/clastic environments; four simulation programs for a desktop computer; middle Triassic carbonate ramp systems in the Catalan Basis, N.E. Spain; facies, cycles, depositional sequencies and controls; stages in the evolution of late Triassic and Jurassic platform carbonates; western margin of the Subalpine basin, Ardech, France. The formation and drowning of isolated carbonate platforms; tectonic and ecologic control of the Northern Apennines; controls on Upper Jurassic carbonate build up development in the Lusitanian Basin, Portugal; Hauterivian to Lower Aptian carbonate shelf sedimentation and sequence stratigraphy in the Jura and northern Subalpine chains (southeastern France and Swiss Jura); basement structural controls on Mesozoic carbonate facies in northeastern Mexico; the Aptian-Albian carbonate episode of the Basque-Cantabrian Basis (Northern Spain); general characteristics, controls and evolution; response of the Arabian carbonate platform margin slope to orogenic closing of an ocean basin, Cretaceous, Oman.

High-frequency Palaeoenvironmental Changes in Mixed Carbonate-siliciclastic Sedimentary Systems (Late Oxfordian, Switzerland, France, and Southern Germany).

High-frequency Palaeoenvironmental Changes in Mixed Carbonate-siliciclastic Sedimentary Systems (Late Oxfordian, Switzerland, France, and Southern Germany). PDF

Author:

Publisher:

Published:

Total Pages:

ISBN-13:

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The main goal of this study is to monitor the highfrequency palaeoenvironmental changes occurring during a marine transgression in mixed carbonatesiliciclastic sedimentary systems. Based on a wellestablished bio- and sequence-stratigraphic framework, a narrow time window in the Bimammatum Zone of the Late Oxfordian is investigated. Seven shallow platform sections (Swiss Jura, Lorraine), two deep platform sections (Haute-Marne, Swabian Jura), and one basin section (SE France) have been logged and analysed in detail. Then, the deposits have been interpreted in terms of palaeoenvironments and sequence- and cyclostratigraphy with a high time resolution. Facies and microfacies analysis allows to propose depositional models for the Swiss Jura platform and the other studied areas. The highresolution sequence- and cyclostratigraphic analysis permits defining hierarchically stacked depositional sequences: medium-scale, small-scale, and elementary sequences, formed through orbitally controlled sealeve changes with periodicities of 400, 100, and 20 kyr, respectively. This study investigates deposits comprised in the first half of a medium-scale sequence, corresponding to two small-scale sequences, each composed of five elementary sequences. In the shallow platform sections, an elementary sequence generally consists of one to four beds including more or less developed marl intervals. In the deep platform sections, an elementary sequence generally consists of one or two limestone beds with a more or less developed marl interval. In the basin section, an elementary sequence is defined by one marl-limestone couplet. The good correlation of depositional sequences over long distances between the seven shallow platform sections and the similar number of elementary sequences in all sections are valuable arguments that allocyclic processes must have been involved in the formation of these depositional sequences. Additional factors such as the position on the platform and the pre-existi.

Linking Diagenesis to Sequence Stratigraphy

Linking Diagenesis to Sequence Stratigraphy PDF

Author: Sadoon Morad

Publisher: John Wiley & Sons

Published: 2012-11-07

Total Pages: 897

ISBN-13: 1118485378

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Sequence stratigraphy is a powerful tool for the prediction of depositional porosity and permeability, but does not account for the impact of diagenesis on these reservoir parameters. Therefore, integrating diagenesis and sequence stratigraphy can provide a better way of predicting reservoir quality. This special publication consists of 19 papers (reviews and case studies) exploring different aspects of the integration of diagenesis and sequence stratigraphy in carbonate, siliciclastic, and mixed carbonate-siliciclastic successions from various geological settings. This book will be of interest to sedimentary petrologists aiming to understand the distribution of diagenesis in siliciclastic and carbonate successions, to sequence stratigraphers who can use diagenetic features to recognize and verify interpreted key stratigraphic surfaces, and to petroleum geologists who wish to develop more realistic conceptual models for the spatial and temporal distribution of reservoir quality. This book is part of the International Association of Sedimentologists (IAS) Special Publications. The Special Publications from the IAS are a set of thematic volumes edited by specialists on subjects of central interest to sedimentologists. Papers are reviewed and printed to the same high standards as those published in the journal Sedimentology and several of these volumes have become standard works of reference.

Well-cuttings Based, Sequence Stratigraphic Framework of the Mixed Siliciclastic-carbonate Lower Cretaceous Sediments of the North Carolina Coastal Plain

Well-cuttings Based, Sequence Stratigraphic Framework of the Mixed Siliciclastic-carbonate Lower Cretaceous Sediments of the North Carolina Coastal Plain PDF

Author: Richard Frank Sunde

Publisher:

Published: 2008

Total Pages: 0

ISBN-13:

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A lithology-based, sequence stratigraphic framework and depositional model for mixed siliciclastic-carbonate Lower Cretaceous sediments of the North Carolina coastal plain (southeastern U.S.) is proposed. Twenty-five lithofacies are recognized. Ten recurring facies associations are defined, and are merged into siliciclastic - and carbonate-dominated depositional profiles, comprising coastal plain to deep shelf depositional environments. Parasequences are recognized from the well data, and are grouped into parasequence sets indicating progressive progradational or retrogradational (highstand and transgressive systems tracts, respectively) stacking patterns. Lowstand deposits are not recognized, although they probably occur in more basinward positions lying to the east. Seismic reflectors guided correlations between wells, and typically coincided with key sequence stratigraphic surfaces. Three third-order sequences are defined, which are dominated by siliciclastic depositional processes. The late highstand deposits of Sequence 1, however, are carbonate rich. The low relative sea-level conditions during late highstand likely favoured climatic aridity, facilitating carbonate-dominated sedimentation.

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