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Arabian Journal of Geosciences

, 11:553 | Cite as

Structural and facies modeling of the Lower Cretaceous Alam El Bueib reservoirs in the Shushan Basin, Western Desert, Egypt

  • Mohamed S. Fagelnour
  • Farouk I. Metwalli
  • El-Arabi H. Shendi
Original Paper
  • 99 Downloads

Abstract

The Qasr oil and gas field is located in the eastern part of the Shushan Basin in the northern Western Desert of Egypt. Sandstones of the Lower Cretaceous Alam El Bueib Formation are the main oil-bearing reservoirs in the field, and these reservoirs cannot be seismically detected. Consequently, modeling is important to predict the extension of the reservoirs. The present study adopts two types of modeling: structural and facies. Structural modeling is the incorporation of interpreted faults, horizons, and zones into a three-dimensional (3D) grid, while facies modeling distributes lithologic facies within the previously constructed 3D structural grid. All available geological information is utilized in facies modeling, including lithological interpretations from well logs, and sedimentary core and ditch cutting descriptions from mud logs. The structural analysis of the Alam El Bueib Formation in the Qasr Field showed several E-W to WNW-ESE fault systems. The geologic structure, combined with stratigraphy and facies architecture, establishes the framework for traps in this field. Lithology interpretation using electric well logs and mud logs showed four main facies: (1) channel sand, (2) flood plain siltstone, (3) lagoonal shale and mud, and (4) marine carbonates. Facies modeling of the six major units that comprise the Alam El Bueib Formation show variable sand channels deposited in fluvial to mixed deltaic and tidal environments. These channels are oriented N-S to NE-SW and form 20 to 100-ft-thick sandstone reservoirs.

Keywords

Qasr Field North Western Desert Alam El Bueib Formation Seismic interpretation Facies modeling 

Notes

Acknowledgements

The authors are grateful to the Egyptian General Petroleum Corporation (EGPC) and Khalda Petroleum Company (KPC), Cairo, Egypt, for their approval and permission to use the material for study. Thanks are also due to geologist Scott Durocher (Apache Egypt) for grammatically reviewing the manuscript.

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Copyright information

© Saudi Society for Geosciences 2018

Authors and Affiliations

  1. 1.Khalda Petroleum CompanyCairoEgypt
  2. 2.Geology Department, Faculty of ScienceHelwan UniversityCairoEgypt
  3. 3.Geology Department, Faculty of ScienceSuez Canal UniversityIsmailiaEgypt

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