Al-Azhar University, Faculty of Science (Boys)Al-Azhar Bulletin of Science1110-253532Issue 2-D20211201Reservoir characterization and petroleum geology at esh el mallaha field, southern gulf of Suez, Egypt11219861210.21608/absb.2021.89127.1130ENAhmed M.EmbabiGeology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, EgyptMohammad A.AbdelwahhabGeology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, Egypt0000-0003-0979-2756Nabil A.AbdelhafezGeology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, EgyptJournal Article20210816Reservoir quality assessment, pointing to possible capacities for holding hydrocarbons, is crucial during exploration-phases of petroleum. This investigation closely examines the petrophysical properties of Nubia-Sandstone Formation upon performing well-log analysis of the available well-log data located at West Esh El Mallaha area, southern part of the Gulf of Suez, Egypt. It is an attempt to reveal the hydrocarbon potentialities within Paleozoic reservoirs of the area. Nubia Formation represents an important reservoir in the Gulf of Suez province with at least 15% of hydrocarbon production potential. Well-log analysis, in means of defining the petrophysical properties (shale-volume, porosity, and water-saturation), of Nubia intervals was an essential objective, in this study, to determine the reservoir quality and hydrocarbon potential capacity of reservoirs in the area. The petrophysical properties have been vertically and laterally illustrated to point out to the ultimate distribution of characteristics within the area. 1D-basin modeling approach was also performed, in this study, to retrieve the geohistory of the area confirming charging of hydrocarbons from intervals of source-prone rocks to reservoir-zones. It has been revealed that Nubia Formation is composed of sandstones interbedded with shales. It possesses a net pay reaching up to 50 feet (from lowest meaningful-value of 1 foot to highest value of 50 feet); with considerable effective porosities up to 20 %. It has been obvious that the southeastern-part of the area features good quality petrophysical characteristics capable of storing and transmitting hydrocarbons within Nubia Formation, leading to big discoveries, at the southern-part of the Gulf of Suez.https://absb.journals.ekb.eg/article_198612_4e6375a70b43148f06b64f11d46d5091.pdfAl-Azhar University, Faculty of Science (Boys)Al-Azhar Bulletin of Science1110-253532Issue 2-D20211201New Fluorite Index Using ASTER Data of Gabal Abu Diyab area, Central Eastern Desert, Egypt132119860210.21608/absb.2021.94705.1136ENMahmoudHafezGeology Department, Faculty of Sciences, Al-Azhar University, Nasr City, Cairo, Egypt.0000-0003-1267-0442IbrahimAbu El-LeilGeology Department, Faculty of Sciences, Al-Azhar University, Nasr City, Cairo, Egypt.NehalSolimanGeology Department, National Authority for Remote Sensing and Space Sciences, Cairo, Egypt.MostafaAbu BakrGeology Department, Faculty of Sciences, Al-Azhar University, Nasr City, Cairo, Egypt.Journal Article20210909Remote sensing represents a significant function in the exploration of minerals. Extraction and identification of mineral occurrences in semi-arid to arid regions are some of the remote sensing confirmed uses. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) images have been combined with band ratio processing technique for detecting the fluorite mineral occurrences in the area around Gabal Abu Diyab, Central Eastern Desert, Egypt. The proposed band ratio derived from ASTER images Spectra [(b8/b6) * (b5/b3)] can be considered to represent the new Fluorite Index (FI). The USGS Spectral libraries are used to extract the new index and validated it by using the field study. According to the given new Fluorite Index (FI) combined with the field observations, two occurrences of fluorite mineralization at Gabal Homrit Waggat and Gabal Ineigi have been identified. This study provides the proposed FI as a beneficial tool for fluorite exploration that could be applicable along with Arabian Nubian Shield and similar arid and semi-arid environments. https://absb.journals.ekb.eg/article_198602_91b002e1a85bc8b1b37d9b6bac6587ec.pdfAl-Azhar University, Faculty of Science (Boys)Al-Azhar Bulletin of Science1110-253532Issue 2-D20211201Reservoir characterization of the upper Abu Roash “G” sandstone in west of Nile area, western desert, Egypt.233120690010.21608/absb.2021.100326.1143ENEsam A.Abd El-GawadGeology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.MohamedFathyGeology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.MahmoudElSherbinyQarun Petroleum Company (QPC), Cairo, Egypt0000-0002-9613-3558Journal Article20211016Accurate reservoir characterization is an important stage in developing, managing the reservoir, and enhancement the production which depends mainly on a good description and precise interpretation of the reservoir facies. The study area is considered as a part of Qarun Petroleum Company’s development leases which are located in the western side of Beni Suef Basin, the northeastern Western Desert which is considered the most important petroleum province in Egypt. Integrated sedimentological analysis of core description, petrographic and mineralogical constituents were carried out on the Upper Abu Roash “G” sandstone reservoir. The core description included 81.25 feet from the WON C-18 borehole helps to identify various sand bodies and distinguish four main facies groups: carbonate facies, mudstone facies, heterolithic facies, and sandstone facies. Petrographically, the sandstone facies samples have frequent amounts of monocrystalline quartz grains, few amounts of plagioclase, traces of polycrystalline quartz, common amounts of ferron dolomite, minor amounts of pore-filling kaolinite booklets and chlorite, amounts of well-developed syntaxial quartz overgrowths, traces of feldspar overgrowths. Also, we have secondary inter-and intraparticle pores, with moderate to good pore interconnectivity and the reservoir quality is moderate to good. Based on the facies, characterization, it is proposed that the stratigraphic intervals of the Upper Abu Roash “G” unit were deposited in subtidal-intertidal settings, where deposition of muddy-flat and intertidal sediments are locally interrupted by tidal-flat sand-channel deposits<em>.</em>https://absb.journals.ekb.eg/article_206900_12f25e6c35b8b2fdc976585570d250ec.pdfAl-Azhar University, Faculty of Science (Boys)Al-Azhar Bulletin of Science1110-253532Issue 2-D20211231Petroleum system of Gindi Basin and Mubarak Sub-Basin, Qarun Concession, Western Desert, Egypt334821154210.21608/absb.2021.101535.1149ENMostafa M.HussienMarina Petroleum Company, MAADI, Cairo, Egypt.0000-0003-0591-0428TharwtAbdel HafeezGeology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo Egypt.Mohammad M.FathyGeology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo Egypt.Mohammad N.El GhamryMerlon International Co. (unitholder), Maadi, Egypt.Journal Article20211017 <br /> The study area is located to the west-southwest of Cairo, which includes Qarun and East Bahariya Concessions. Two main prolific sedimentary basins included; Gindi and Mubarak basins. Geophysical and 3D seismic data integrated with well logs, as well as geochemical data from 5 wells, all resulted in an accurate delineation of the structure traps and a reassessment of the elements of the petroleum system in this area. Mentioned basins are formed as a result of Late Cretaceous wrench tectonics. Such tectonic regime was responsible for generating oil entrapment and conduit faults in Cretaceous reservoirs. Detailed geochemical analysis proved that the Jurassic Khatatba shales, and the Cretaceous Abu Roash “F” act the main source rocks in these basins. On the other hand, isopach maps prepared for Apollonia and Khoman carbonates clarified that such formations are considered the main top seal in this area. This study aimed to re-evaluate the elements of the petroleum system, and to provide new opportunities to select the best locations for drilling. The result of the current study showed that most of the oil entrapments are in the form of three-way dip-fault-dependent closures, and the fault system acts as the main conduit for oil migration. Also, the Cretaceous Abu Roash “F” carbonates and the Jurassic Khatatba shale are the main source rocks, with an oil window at 4500-5500 ft. depth for Abu Roash “F” Member and at 7500-8500 ft. depth, and a gas window at 12000-13000 ft. depth for Khatatba Formation. Oil to oil correlation suggested that two types of oil are there (type I and type II).https://absb.journals.ekb.eg/article_211542_00254b345211275be6aa0d05c3c25805.pdfAl-Azhar University, Faculty of Science (Boys)Al-Azhar Bulletin of Science1110-253532Issue 2-D20211231Lineaments Detection and Groundwater Exploration Using GIS and Geo-electric Data at Wadi El-Asyuti Area, Eastern Desert, Egypt.495921154310.21608/absb.2021.84781.1125ENAshraf M.AbdoGeology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt.Hassan S.SabetGeology Department, Faculty of Science, Al-Azhar University, Cairo, Egypt.Mohamed E.MebedGeophysics Management, Egyptian Mineral Resources Authority, Egypt.Journal Article20210721 <br /> Geo-electric and GIS data toWadi El-Asyutiarea, central Eastern Desert, Egypt have been used for identify the different lineaments and possibilities of the occurrence of the groundwater.Shaded relief maps were developed from the digital elevation model (DEM) which used for identifying the lineaments. Geomatica software extracted the lineaments at the final maps with NW-SE direction.Meanwhile the geologic fault trends derived from geologic map take NW-SE, WNW-ESE, N-S and ENE-WSW directions. Twenty two electric resistivity soundings were conducted in the study area and three cross sections. Drilled well is near from VES-22. Geo-electric and drilling results reflected three layers. The first one consists of Wadi deposit, friable sand, fine sand, clay and limestone. The second layer composed of clay intercalation with limestone and silt and the third layer consists of clay intercalation with sand and silt and represented the aquifer layer.https://absb.journals.ekb.eg/article_211543_b7c7d663dcc09db23665ffdaca5eced8.pdf