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Article Type

Research Paper

Corresponding Author

El Sayed Selim

Abstract

This study aims to perform an exhaustive petrophysical assessment to examine the oil potential in the pre-rift Late Cretaceous reservoirs along with the Eocene Thebes Formation within the Edfu-Saqara field. This field locates in the central offshore region of the Gulf of Suez. This research employed wireline logs from four wells (GS323-1A, GS323-4A, Edfu A-3, and Edfu A-5A) drilled in the Edfu-Saqara field. The detailed assessment of well logging data reveals encouraging petrophysical indicators for the Late Cretaceous sandstones, plus the limestones of the Thebes Formation in the studied Edfu-Saqara field. These potential reservoirs exhibit moderate net pay thickness fluctuating between 10 to 150 ft, a fair to good net/gross ratio between 0.21 and 0.61, low shale content ranging from 0.00 to 0.10, good effective porosity in the range of 0.06 to 0.18, low water saturation varying between 0.10 and 0.30, and high hydrocarbon saturation ranging from 0.70 to 0.90. The main pre-rift oil reservoirs in the Edfu-Saqara field encompass the pre-Cenomanian Nubia Formation together with the Coniacian-Santonian Matulla Formation. Accordingly, the current research presents the Late Cretaceous sandstones of Raha, Abu Qada, and Wata formations plus the Eocene carbonate of Thebes Formation as potential oil-reservoirs within the pre-rift megasequence in Edfu-Saqara field.

Keywords

Petrophysical appraisal; Thebes Formation; Upper-Cretaceous; Edfu-Saqara Field; Oil-reservoirs.

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