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A new workflow for carbonate reservoir modelling based on MPS: shoal bodies in outcrop analogues (Triassic, SW Germany)

By
Andre Jung
Andre Jung
1
Department of Geosciences, Sedimentary Geology, University of Tübingen, Sigwartstr. 10, 72070 Tübingen, Germany
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Thomas Aigner
Thomas Aigner
1
Department of Geosciences, Sedimentary Geology, University of Tübingen, Sigwartstr. 10, 72070 Tübingen, Germany
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Denis Palermo
Denis Palermo
2
Eni, Exploration and Production Division, via Emilia 1, 20097 San Donato Milanese, Italy
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Sergio Nardon
Sergio Nardon
2
Eni, Exploration and Production Division, via Emilia 1, 20097 San Donato Milanese, Italy
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Marco Pontiggia
Marco Pontiggia
2
Eni, Exploration and Production Division, via Emilia 1, 20097 San Donato Milanese, Italy
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Published:
January 01, 2012

Abstract

This study presents a workflow for 3D modelling of carbonate reservoirs using multiple-point statistics (MPS) in the framework of a pre-existing model. It consists of the following steps: (1) applying a hierarchical classification scheme for carbonate geobodies; (2) based on this classification, retrieval of relevant data from Carbdb, a novel software to manage a database of analogue studies; (3) construction of training images based on the retrieved data from Carbdb; and (4) using the training images when building a 3D reservoir model with MPS. MPS makes use of training images to capture depositional patterns, which will then be reproduced during the stochastic simulations. Carbdb provides a library of quantitative data such as dimensions, geometries and the distribution pattern of geobody analogues necessary for building training images. The MPS workflow was applied to carbonate shoal bodies from a reservoir analogue, the Muschelkalk in SW Germany. Present-day shoal bodies from the Arabian Gulf were retrieved from Carbdb as possible modern analogues to generate training images. The realizations of this MPS approach are compared with a previously established 3D geocellular model that was built deterministically by interactive facies modelling. The MPS simulations produced geologically more realistic facies distributions with higher facies heterogeneity, similar to the depositional patterns observed in modern analogues.

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Contents

Geological Society, London, Special Publications

Advances in Carbonate Exploration and Reservoir Analysis

J. Garland
J. Garland
Cambridge Carbonates Ltd, UK
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J. E. Neilson
J. E. Neilson
University of Aberdeen, UK
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S. E. Laubach
S. E. Laubach
University of Texas at Austin, USA
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K. J. Whidden
K. J. Whidden
USGS, USA
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Geological Society of London
Volume
370
ISBN electronic:
9781862396180
Publication date:
January 01, 2012

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