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North Oman fault geometries in outcrops, analogues and subsurface

By
Pascal Richard
Pascal Richard
1
Shell International, Kesslerpark 1, 2288 GS Rijswijk, The Netherlands
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Loic Bazalgette
Loic Bazalgette
2
Petroleum Development Oman, PO Box 81, Muscat 100, Sultanate of Oman
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Mohammed Al-Kindi
Mohammed Al-Kindi
2
Petroleum Development Oman, PO Box 81, Muscat 100, Sultanate of Oman
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Published:
January 01, 2014

Abstract

North Oman offers a rare opportunity for making outcrop observations of faults developed in carbonate formations that are also producing reservoirs in the subsurface. It is possible to look in great detail at fault geometries and associated fault damage zones, both in map view and cross-sections. These observations allow the establishment of geometrical concepts and rules to be established that allow the interpretation of seismic faults and the building of coherent static models. This paper highlights how the combination of the input from outcrops, a database of sandbox analogue models and high quality seismic data enables the development of conceptual geometrical models of faults. These conceptual geometrical models support interpretation and modelling strategies and workflows for the construction of geo-cellular models. In the first part of this paper, the challenge faced by the geo-modeller is described. A description of the vertical segmentation of faults in cross-section is provided. A summary of these observations is sketched as a series of 3D block diagrams. Finally, the mechanisms of fault initiation and growth through time reviewed to highlight the particular 3D segmented nature of faults in carbonate.

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Contents

Geological Society, London, Special Publications

Tectonic Evolution of the Oman Mountains

H. R. Rollinson
H. R. Rollinson
University of Derby, UK
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M. P. Searle
M. P. Searle
Oxford University, UK
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I. A. Abbasi
I. A. Abbasi
Sultan Qaboos University, Muscat, Oman
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A. I. Al-Lazki
A. I. Al-Lazki
Petroleum Development Oman, Oman
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M. H. Al Kindi
M. H. Al Kindi
Petroleum Development Oman, Oman
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Geological Society of London
Volume
392
ISBN electronic:
9781862396685
Publication date:
January 01, 2014

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