Geophysical information in the form of seismic and well logging data are used to understand the structural elements, tectonic setting, stratigraphy and petrophysical characteristics of the upper Cretaceous rock units (Bahariya, Abu Roash and Khoman Formations) in the Karama field, northern part of the Western Desert. The interpretation of the available seismic data led to the identification of the reflectors under investigation as well as to map and determine the structural elements on the tops of the evaluated lithostratigraphic units. Seismic lines were used to make Four Two Way Time (TWT) structural contour map, reflection and four depth maps on the top of Khoman, Abu Roash "A", Abu Roash "G" and Upper Bahariya Formations reflecting the occurrence of major 11 normal faults in various directions (mainly NW-SE) forming different types of horst and graben structures. The structure of Karama-2 to Karama-4 wells is a stretched shoestring/oval shape E-W dipping against the dipping fault "F1", the resulting fold axis; however, is ENE-WSW with downthrown toward the southern part of the study area. The wire line log interpretations in 6 wells distributed in the study area have been used to evaluate the petrophysical parameters of the Abu Roash "G" Member, which is considered as an important reservoir in the study area. Computer-assisted log analyses have been used to evaluate all petrophysical interpretation such as effective porosity (ΦE), water saturation (Sw), hydrocarbon saturation (Sh). Horizontal distributions in forms of contour maps were constructed using computer software. Some vertical sections have been illustrated using IP (Interactive Petrophysics) program software output in order to show the vertical and lateral variations in reservoirs characteristics. The average values of effective porosity recorded among the studied wells range from 13% to 25% in the southern area toward the northeastern part of the study area. The shale volume generally is ranging from 24% at the southern part to 2% at the northeastern part of the area. The sand thickness of the net pay is ranging from 7% at the southern part to 25% at the eastern part of the study area.

Wadi Um Gheig area comprises a variety of Neoproterozoic rocks including serpentinites of ophiolite assemblage, metavolcanoclastics, schists, metavolcanics and metagabbro of island arc assemblage. The migmatite and gniesses represent high grade metamorphic rocks. The syntectonic fresh gabbro, as well as tonalite and granodiorite in addition to the late to post tectonic granitoids are recorded. Lithological mapping in the Wadi Um Gheig is carried out by using Landsat Thematic Mapper (ETM+) image enhancement techniques including RGB band ratios and supervised classification. In the present study new proposed band ratio (7/1, 3/1, 5/7) with the supervised classification are used and proved a good efficiency for discriminating and mapping the different rock units in the Wadi Um Gheig.

Geographic information system (GIS) and remote sensing data confirmed by field checks have been used to investigate the geoenvironmental characteristics at Wadi Qena area. The study area is mainly covered by sedimentary rock units (Paleozoic to Cenozoic) and a small basement exposure in its northeastern corner. It exhibits different types of structural elements represented by anticlines (Wadi Qena and Wadi Hamama) and synclines (El Serai and Abu Had) and four main fault trends (NE-SW, NW-SE, ENE-WSW and N-S). The basin analysis studies show that the most dangerous risk area is located at the southern part of the wadi drained by Wadi El-Jurdi and Wadi Shahdeen. Quantify the hydrogeologic situation, land-use map and a plane for flood risk protection of the investigated area are delivered to support the decision-making processes. However, many locations are suggested for new cities along Wadi Qena which accommodates the residential and the industrial activities required for developments. The most dangerous zones are located at the downstream of Wadi El-Jurdi and Wadi Shahdeen. So, the entire development plan should avoid this buffer zone.