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October oil field is considered one of the most prolific areas in the central Gulf of Suez, which recently suffered a lack of production in some areas, in addition to some wells that have begun to deplete, which negatively affects the economic value of this field. 3D integrated reservoir model on five wells has been performed to simulate the subsurface structural setting, petrophysical modelling, and distribution of facies modelling of the Late Cretaceous Matulla Formation and Early Miocene Asl Member of Upper Rudeis Formation, which are the main oil-bearing reservoirs in this study. Structural modelling controlled by the incorporation of explained structures, horizons, and picked zones for 3D grid express northwestsoutheast to northeast-southwest fault systems, whilst facies modelling has enabled the spatial distribution of lithologic facies within the established 3D structural model reflecting two types of facies: marine carbonates and lagoon shale, and the petrophysical modelling explained a complete distribution of the petrophysical characteristic of the Matulla and Asl oil reservoirs revealed good reservoir characteristics, which are high net pay, high effective porosity, low shale content, low water saturation, and high hydrocarbon saturation. Therefore, three new commercial promising areas were identified to raise the productive value of this field according to the three-way dip closure, petrophysical results, and the facies distribution.

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Geochemical studies were applied to evaluate the possible source rocks of Cretaceous-Eocene formations in the October oil field, including pyrolysis analysis data such as total organic carbon (TOC %), generating source potential (S2), production index (PI), oxygen, and hydrogen indices (OI, HI) and (Tmax). Three source rocks are characterized by fair to good and very good TOC%, which are Thebes, Duwi, and Abu Qada formations with kerogen type I and type II, respectively, and some samples are in the type III region reflecting the degree of maturation and can generate oil and gas. 1D basin models were constructed for five wells to simulate the multi-tectonic phases and multiple burial histories, migration path, and event chart in the study area. The sedimentation rates from Cretaceous to Palaeocene age are characterized by low burial rate sedimentation, low to medium in the Eocene age, and high burial rate and rapid sedimentation in the Miocene and post-Miocene age. The petroleum system of the October oil field was studied, and two petroleum systems can be recognized, according to the integration studies between the source rock evaluation and petroleum basin modelling.

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The Egyptian Government is developing a new city, Galala, above the Northern Galala Plateau, western side of Gulf of Suez between Ain Sukhna and Zafarana. The aim of the study is integrating magnetic and stratigraphic data to delineate the subsurface features beneath the New Galala City, in order to avoid the possible geological hazards. The stratigraphic succession in the study area consists of Precambrian basement complex overlain unconformably by Phanerozoic sequence. The Phanerozoic sequence composed mainly of siliciclastic-dominated rocks superimposed by carbonate-dominated rocks. The carbonatedominated rocks cover most surface area, whilst the siliciclastic-dominated rocks exposed along eastern and southern foot slope of the Northern Galala Plateau. The observed palaeokarst surfaces, fissures, caves, sink-holes and fault zones within carbonate rocks may cause some geological hazards in the study area. The total intensity aeromagnetic map was subjected to un-prescribed structural index 3D-Euler Deconvolution (ED), the tilt angle derivative (TDR) and the power spectrum in order to estimate both trends and source depths.