Petrophysical evaluation of the pre-rift hydrocarbon reservoirs in the Gulf of Suez Basin

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 EdfueSaqqara 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 EdfueSaqqara 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 EdfueSaqqara field. These potential reservoirs exhibit moderate net pay thickness fluctuating between 10 and 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 0.06e0.18, 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 EdfueSaqqara field encompass the pre-Cenomanian Nubia Formation together with the ConiacianeSantonian 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 EdfueSaqqara field.