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Book Chapter

The Annot Sandstone Outcrops (French Alps): Architecture Description as Input for Quantification and 3D Reservoir Modeling

By
Philippe Joseph
Philippe Joseph
Institut Français du Pétrole 1-4 avenue de Bois-Préau 92506 Rueil Malmaison
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Nathalie Babonneau
Nathalie Babonneau
Institut Français du Pétrole 1-4 avenue de Bois-Préau 92506 Rueil Malmaison
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Aline Bourgeois
Aline Bourgeois
Institut Français du Pétrole 1-4 avenue de Bois-Préau 92506 Rueil Malmaison
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Gilles Cotteret
Gilles Cotteret
Institut Français du Pétrole 1-4 avenue de Bois-Préau 92506 Rueil Malmaison
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Rémi Eschard
Rémi Eschard
Institut Français du Pétrole 1-4 avenue de Bois-Préau 92506 Rueil Malmaison
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Blaise Garin
Blaise Garin
Institut Français du Pétrole 1-4 avenue de Bois-Préau 92506 Rueil Malmaison
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Didier Granjeon
Didier Granjeon
Institut Français du Pétrole 1-4 avenue de Bois-Préau 92506 Rueil Malmaison
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Olivier Lerat
Olivier Lerat
Institut Français du Pétrole 1-4 avenue de Bois-Préau 92506 Rueil Malmaison
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Christian Ravenne
Christian Ravenne
Institut Français du Pétrole 1-4 avenue de Bois-Préau 92506 Rueil Malmaison
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Olinto Gomes de Souza
Olinto Gomes de Souza
Petrobras Cidade Universitaria Quadra 7, Ilha Do Fundao Rio de Janeiro, Brazil
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François Guillocheau
François Guillocheau
Géosciences Rennes Campus de Beaulieu 35042 Rennes, France
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Jean-Marie Quemener
Jean-Marie Quemener
Géosciences Rennes Campus de Beaulieu 35042 Rennes, France
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Published:
December 01, 2000

Abstract

The Eocene-Oligocene Annot Sandstone of South East France is a sand-rich turbiditic system, up to 1000 m thick, which was deposited in several parallel and tectonically controlled sub-basins. For reservoir characterization purposes, three kilometer-scale outcrop areas were studied in detail, resulting in bed-scale, 2D and 3D architecture descriptions.

The western Annot-Chalufy confined sub-basin, probably fed from a fan-delta located near Saint Antonin, shows a downstream evolution from very coarse-grained erosive channels (developing lateral terrace deposits) to tabular channelized or depositional lobes separated by thick heterolithic levels acting as major permeability barriers.

The eastern Sanguinière narrow sub-basin was probably fed by multiple braided deltas at the border of the Alpine mountain chain to the east. In a ramp setting, coarsening then fining-upward sequences register the increase then decrease in flow energy of coarse-grained amalgamated channelized turbidites that evolve downstream into erosional channels, then finer-grained slope depositional channels and elongated sand tongues.

In this framework, the geometrical and geostatistical characteristics of the constitutive architectural elements have been quantified. 3D geocellular reservoir models of the outcrops have been reconstructed and used for synthetic seismic modeling.

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Contents

GCSSEPM

Deep-Water Reservoirs of the World

Paul Weimer
Paul Weimer
Houston, Texas
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SEPM Society for Sedimentary Geology
Volume
20
ISBN electronic:
978-0-9836097-0-4
Publication date:
December 01, 2000

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