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Book Chapter

Deep-Water Exploration In Atlantic Morocco: Where Are the Reservoirs?

By
Gabor Tari
Gabor Tari
OMV Exploration and Production GmbH, Trabennstrasse 6-8, A-1020, Vienna, Austria(e-mail:gabor.tari@omv.com)
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Haddou Jabour
Haddou Jabour
Office National des Hydrocarbures et des Mines, 34 Ave. Al Fadila, 10050, Rabat, Morocco (e-mail:jabour@onhym.com)
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Jim Molnar
Jim Molnar
707 Queensmill Ct., Houston, Texas, 77079, U.S.A. (e-mail: jmolnar214@aol.com)
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David Valasek
David Valasek
Statoil, 2103 CitywestBlvd., Houston, Texas, 77042, U.S.A. (e-mail:davv@statoil.com)
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Mahmoud Zizi
Mahmoud Zizi
Ziz Geoconsulting, 47 Ave. Fall Oumeir Agdal, Rabat, Morocco (e-mail:mahmoudzizi@menara.ma)
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Published:
January 01, 2013

Abstract

The Moroccan salt basin remains one of the least explored of the west African salt basins. Although small producing fields in the onshore Essaouira Basin exist, so far, only subcommercial discoveries on the shelf have been made. During the last decade, three exploration wells were drilled in the deep water between Essaouira and Tarfaya in the central segment of the Atlantic margin of Morocco. These wells documented a general lack of reservoir-facies siliciclastics within the Cenozoic and Upper Cretaceous deep-water sequence.

Compared to the other segments of the Atlantic margin, the Moroccan margin has had a fairly complex structural history since the Middle Jurassic breakup between the North American–African plates involving several well–documented Alpine compressional periods and mountain building in the adjacent Atlas Mountains. In particular, as the NeogeneHolocene inversion, uplift, and erosion of the Atlas system is very well documented onshore, the apparent lack of Upper Cretaceous and Cenozoic reservoirs in the first deep–water wells came as a surprise. Therefore, reservoir presence, as the most critical risk factor in the deep–water exploration of the Moroccan Atlantic margin, needs to be better understood before new exploration wells can be drilled. Based on regional evidence, the Lower Cretaceous and the Jurassic sequences are interpreted to be significantly more sand prone in the deep–water areas than the overlying Upper Cretaceous and Cenozoic strata.

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Contents

AAPG Memoir

Tectonics and Sedimentation: Implications for Petroleum Systems

Dengliang Gao
Dengliang Gao
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American Association of Petroleum Geologists
Volume
100
ISBN electronic:
9781629810010
Publication date:
January 01, 2013

GeoRef

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