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Abstract
Strohmenger, C. J., P. E. Patterson, G. Al-Sahlan, J. C. Mitchell, H. R. Feldman, T. M. Demko, R. W. Wellner, P. J. Lehmann, G. G. McCrimmon, R. W. Broomhall, and N. Al-Ajmi,
DOI:10.1306/1215878M883271
2006 by The American Association of Petroleum Geologists.
Sequence Stratigraphy and Reservoir Architecture of the Burgan and Mauddud Formations (Lower Cretaceous), Kuwait
Christian J. Strohmenger,
1 John C. Mitchell,
2 Howard R. Feldman,
3 Patrick J. Lehmann,
4 Robert W. Broomhall,
5 Penny E. Patterson,
6 Ghaida Al-Sahlan,
7 Timothy M. Demko,
8 Robert W. Wellner,
9 G. Glen McCrimmon,
10 Neama Al-Ajmi
11
1ExxonMobil Exploration Company, Houston, Texas, U.S.A.;
present address: Abu Dhabi Company for Onshore Oil Operations, Abu Dhabi, United Arab Emirates
2ExxonMobil Exploration Company, Houston, Texas, U.S.A.
3ExxonMobil Exploration Company, Houston, Texas, U.S.A.
4ExxonMobil Exploration Company, Houston, Texas, U.S.A.
5ExxonMobil Exploration Company, Houston, Texas, U.S.A.
6ExxonMobil Upstream Research Company, Houston, Texas, U.S.A.
7Kuwait Oil Company, Ahmadi, Kuwait
8University of Minnesota Duluth, Duluth, Minnesota, U.S.A.
9ExxonMobil Upstream Research Company, Houston, Texas, U.S.A.
10Hibernia Management and Development Company, St. John's, Newfoundland and Labrador, Canada
11Kuwait Oil Company, Ahmadi, Kuwait
ACKNOWLEDGMENTS
The authors gratefully acknowledge the managements of ExxonMobil Exploration Company, ExxonMobil Upstream Research Company, and Kuwait Oil Company (KOC) for their permission to publish this paper. For valuable discussions, we thank Linda W. Corwin (ExxonMobil), Daniel H. Cassiani (ExxonMobil), Kathleen M. McManus (ExxonMobil), Menahi Al-Anzi (KOC), Ahmed Al-Eidan (KOC), and Mohammed Al-Ajmi (KOC). We extend our thanks to David Awwiller (ExxonMobil) for his detailed reservoir-quality analyses and to Tom D. Davies and Ting-Chang Huang for performing the biostratigraphic and palynofacies analyses. Dolores A. Claxton (ExxonMobil) is thanked for drafting the figures. We extend special thanks to Arthur D. Donovan (BP; formerly with ExxonMobil) for his valuable contributions to this study. The authors greatly appreciate the thorough and thoughtful reviews of J. R. (Rick) Sarg and James McGovney.
ABSTRACT
A new sequence-stratigraphic framework is proposed for the Burgan and Mauddud formations (Albian) of Kuwait. This framework is based on the integration of core, well-log, and biostratigraphic data, as well as seismic interpretation from giant oil fields of Kuwait.
The Lower Cretaceous Burgan and Mauddud formations form two third-order composite sequences, the older of which constitutes the lowstand, transgressive, and highstand sequence sets of the Burgan Formation. This composite sequence is subdivided into 14 high-frequency, depositional sequences that are characterized by tidal-influenced, marginal-marine deposits in northeast Kuwait that grade into fluvial-dominated, continental deposits to the southwest.
The younger composite sequence consists of the lowstand sequence set of the uppermost Burgan Formation and transgressive and highstand sequence sets of the overlying Mauddud Formation. This composite sequence is sand prone and mud prone in southern and southwestern Kuwait and is carbonate prone in northern and northeastern Kuwait. The lowstand sequence set deposits of the Burgan Formation are subdivided into five high-frequency depositional sequences, which are composed of tidal-influenced, marginal-marine deposits in northeastern Kuwait that change facies to fluvial-dominated deposits in southwestern Kuwait. The transgressive and highstand sequence sets of the Mauddud Formation are subdivided into eight high-frequency, depositional sequences. The Mauddud transgressive sequence set displays a lateral change in lithology from limestone in northern Kuwait to siliciclastic deposits in southern and southwestern Kuwait. The traditional lithostratigraphic Burgan –Mauddud contact is time transgressive. The Mauddud highstand sequence set is carbonate prone and thins south- and southwestward because of depositional thinning. Significant postdepositional erosion occurs at the contact with the overlying Cenomanian Wara Shale.
The proposed sequence-stratigraphic framework and the incorporation of a depositional facies scheme tied to the sequence-stratigraphic architecture allow for an improved prediction of reservoir and seal distribution, as well as reservoir quality away from well control.
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