Article
Multidisciplinary Sciences
Yousif M. Makeen, Xuanlong Shan, Mutari Lawal, Habeeb A. Ayinla, Siyuan Su, Nura Abdulmumini Yelwa, Ye Liang, Ndip Edwin Ayuk, Xianli Du
Summary: The study focused on characterizing the Bentiu Formation reservoir in the Muglad Basin, utilizing sedimentological and petrophysical analyses on core samples from the Great Moga and Keyi oilfields. Results identified two main facies groups: coarse to medium-grained sandstone with good reservoir qualities, and fine-grained clay-rich sandstone with poor reservoir qualities.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Yousif M. Makeen, Xuanlong Shan, Habeeb A. Ayinla, Ekundayo Joseph Adepehin, Ndip Edwin Ayuk, Nura Abdulmumini Yelwa, Jian Yi, Osman M. A. Elhassan, Daijun Fan
Summary: This study focused on the sedimentology and diagenesis of the Zarga and Ghazal formations in the Muglad Basin, Sudan, highlighting the importance of understanding reservoir quality, provenance, and depositional environments to improve exploration and production efficiency. Analysis of subsurface reservoir cores revealed different lithofacies and authigenic minerals, showing a fluvial-to-deltaic depositional environment for the Ghazal formation and a dominant deltaic setting for the Zarga formation. Diagenetic processes like precipitation and cementation were found to be more prevalent than pore-enhancing processes, leading to varying reservoir qualities between the two formations.
SCIENTIFIC REPORTS
(2021)
Article
Geosciences, Multidisciplinary
Jian Zhao, Lirong Dou
Summary: This study confirms the crystalline basement in the Central African Rift System (CARS) as a good unconventional reservoir in the surrounding basins of the Muglad area, Sudan. At least five Early Mesozoic intrusions have been recognized for the first time at the northern margin of the Muglad Basin. Field and petrographic investigations show that these intrusions are mainly granite, syenite, diorite, and monzonite. Zircon internal structures, Th/U ratios, and rare earth element (REE) patterns indicate their magmatic origin. U-Pb dating reveals ages from 195.0 +/- 6 to 225.0 +/- 3 Ma, belonging to the Late Triassic-Early Jurassic. These results suggest that the Muglad Basin basement is not universally Precambrian as previously considered. The older basement was intruded and modified by Early Mesozoic magmas, resulting in diverse Mesozoic igneous rocks. This composite basement has undergone prolonged weathering and fracturing, creating porous and permeable weathered layers or fractured zones, making it a good unconventional reservoir for oil and gas.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geochemistry & Geophysics
Hong Xiao, Tieguan Wang, Meijun Li, Dingsheng Cheng, Zhe Yang
Summary: This study conducted geochemical analysis and oil-source rock correlation studies on different members of the Abu Gabra Formation in the Sufyan sub-basin, Sudan. It found that the AG(2)(2) and AG(3) members have a higher hydrocarbon generation potential and are the main source of crude oils, while the contribution from AG(1) and AG(1)(2) members is considered negligible. The results provide valuable guidance for future petroleum exploration in the Sufyan sub-basin.
ORGANIC GEOCHEMISTRY
(2021)
Article
Energy & Fuels
Emad A. Eysa, Bassem S. Nabawy, Ashraf Ghoneimi, Ahmed H. Saleh
Summary: This study aims to investigate the microfacies and diagenetic features of the Abu Madi clastic reservoir in the Nile Delta region, and their impact on reservoir characteristics. By integrating petrographical studies and conventional data, the researchers divided the reservoir into different types based on mineral composition and diagenetic features, and examined their influence on reservoir quality and hydraulic flow zones.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Energy & Fuels
Mahmoud Leila, Ali Eslam, Asmaa Abu El-Magd, Lobna Alwaan, Ahmed Elgendy
Summary: The study explored the reservoir properties of the Abu Madi succession outside the main canyon system, identifying two sandstone units with different petrophysical characteristics. The RRTI facies were determined to be the best reservoir targets, with high potential for primary porosity preservation.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
William A. Deng, Seho Hwang, Seonghyung Jang
Summary: This study proposes an approach to discriminate between different lithofacies using seismic anisotropic parameters, aiming to reduce the uncertainty in lithofacies discrimination. The suggested parameters are shown to be effective in identifying distinct lithofacies in the Muglad Basin, South Sudan. Additionally, a new parameter is introduced as a possible indicator for heavy oil reservoirs.
Article
Engineering, Geological
Frederic Amour, Hamidreza M. Nick
Summary: This study aims to quantitatively analyze the impacts of mineralogy, compaction, cementation, and oil saturation on porosity and permeability of chalk rocks in the North Sea, in order to establish more realistic reservoir models.
ENGINEERING GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
S. Morad, U. Farooq, H. Mansurbeg, M. Alsuwaidi, D. Morad, I. S. Al-Aasm, S. Shahrokhi, M. Hozayen, H. Koyi
Summary: Petrography, petrophysics, and geochemistry are used to study the dolomitization and reservoir quality of an Upper Cretaceous carbonate reservoir in Abu Dhabi, United Arab Emirates. The dolomitization in highstand systems tracts is attributed to tidal and evaporative pumping as well as seepage reflux during relative sea-level fall. Dolomitization in bioturbation sites is attributed to localized geochemical conditions. The porosity and permeability of the dolostones are strongly controlled by depositional textures and subsequent diagenesis, including dolomite cementation and dissolution. The study highlights the importance of dolomitization in controlling reservoir lithology and heterogeneity in carbonate successions.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Mohamed Abdel-Fattah, Souvik Sen, Sara M. Abuzied, Mohamed Abioui, Ahmed E. Radwan, Mohammed Benssaou
Summary: This study focuses on the petrographical and petrophysical properties of the upper Miocene Abu Madi Formation in the Nile Delta, confirming the reservoir depositional environment and quality. The research reveals that the sandstone reservoirs in this region exhibit excellent hydraulic properties, while finer-grained sandstones present lower reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Mohammad A. Abdelwahhab, Ahmed A. Radwan, Hamdy Mahmoud, Ahmed Mansour
Summary: This study developed a depositional model for predicting reservoir heterogeneity and quality of the Jurassic estuarine depositional system using an integrated approach of facies analysis and modeling. Stochastic 3D geocellular reservoir modeling, constrained by seismic attribute analysis, was used to predict the lateral distribution of different facies. Predicting organic maturities and understanding sedimentary basin evolution were also important in confirming hydrocarbon charging to reservoir intervals.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Energy & Fuels
Ehab M. Assal, Sherif Farouk, Mohammad A. Sarhan
Summary: This study investigates the sedimentological analysis and petrophysical properties of the Messinian Abu Madi reservoir in the offshore Nile Delta Basin, aiming to determine how facies heterogeneities control reservoir quality. The study combines core data and wireline logs to identify different clastic facies and their petrophysical characteristics. The results show that the reservoir quality is strongly influenced by the original composition and primary depositional facies, with the best reservoir quality occurring in massive sandstones. The study also reveals the high potential of Abu Madi sandstones as gas-bearing reservoirs in the offshore Nile Delta Basin.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2023)
Article
Environmental Sciences
Jingqiu Jiang, Gaofeng Zhao, Dewang Wang, Lin Liu, Xu Yan, Huarong Song
Summary: This study investigated the spatial and temporal variation of water quality and its driving factors in Guanting Reservoir basin. The results showed an overall improvement in water quality over time, with nutrient inputs and socio-economic factors playing a significant role. Spatially, tributaries had better water quality than the main river, resulting in better quality in the western part of the reservoir. The study highlighted the importance of urbanization and industry structure in influencing water quality in upstream tributaries.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Angelica Arlebrand, Carita Augustsson, Alejandro Escalona, Sten-Andreas Grundvag, Dora Marin
Summary: This study explores the impact of depositional environment on the final reservoir quality by analyzing facies and their correlation with primary textures, composition, and diagenetic alteration in four Lower Cretaceous sandstone reservoirs in the southwestern Barents Sea. The study reveals that slope-to-basin-floor sandstone has the highest porosity due to factors like good sorting and non-pervasive carbonate cementation, while deltaic sandstone shows varying porosity influenced by energy levels and sediment supply. The distal shallow-marine sandstone reservoir has the lowest porosity, likely due to deposition in a low energy environment with low sediment supply.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Zhang Yu, Jia Jun, Hu Hua, Du Yao, Hongyi An, Fang Shi
Summary: A petrophysical volume model of the calcareous tight sandstone reservoir was established using petrophysics experiments and the analysis of oil bearing grade control factors. A method of calculating calcium content and correcting resistivity was proposed. The accuracy of water saturation calculation was improved by using resistivity correction and variable rock-electro parameters.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Bassem S. Nabawy, Aref A. Lashin, Moataz Kh Barakat
Summary: In this study, core samples of the Upper Bahariya Member were analyzed, and the rock typing technique was applied to characterize the reservoir. It was found that different lithofacies have different reservoir properties, with the first lithofacies having the best reservoir quality and the fourth lithofacies having the lowest reservoir quality. The reservoir was divided into five Hydraulic Flow Units, providing important information for exploration and production optimization.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Roghayeh Fallah-Bagtash, Mohammad H. Adabi, Bassem S. Nabawy, Armin Omidpour, Abbas Sadeghi
Summary: The Asmari reservoir in SW Iran consists of fractured dolomite characterized by seven non-clastic microfacies, deposited in tidal flat, lagoonal, and carbonate shoal environments. Petrophysical core data and quality parameters reveal five reservoir rock types and four hydraulic flow units within the characterized reservoir. Control factors include dolomitization, fracturing, and anhydrite cementation.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Ahmed A. Radwan, Bassem S. Nabawy, Mohamed Shihata, Mahmoud Leila
Summary: The Karewa gas discovery in the Taranaki Basin of New Zealand revealed commercial gas potential in the Miocene-Pliocene stratigraphic horizons, originating from microbial carbonate reduction processes. The reservoir characteristics of the Mangaa C sandstone and the seal capacity analysis of the system confirm its gas potential and efficiency in sealing a thick gas column.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Ahmed A. Radwan, Mohammad A. Abdelwahhab, Bassem S. Nabawy, Kamel H. Mahfouz, Mohamed S. Ahmed
Summary: The study conducted facies-constrained modeling to identify architectural elements of the Bahariya Formation, showing its potential reservoir quality. Through various data analysis, the formation was subdivided into different systems, with eight reservoir rock types identified for future oilfield development planning.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Chemistry, Physical
Gamal A. Khater, Bassem S. Nabawy, Amany A. El-Kheshen, Manal Abdel-Baki Abdel Latif, Mohammad M. Farag
Summary: The aim of this study is to recycle waste materials from intensive industries to produce cellular porous ceramic. Ceramic samples were prepared using arc furnace slag and ceramic sludge, and analyzed for their oxide constituents and crystalline phases. The results showed that the porosity, density and electrical properties of the ceramics were dependent on the composition of the starting materials and formed phases.
Article
Energy & Fuels
Isaac Fea, Mohamed Abioui, Bassem S. Nabawy, Sreepat Jain, Digbehi Z. Bruno, Ahmed A. Kassem, Mohammed Benssaou
Summary: This study provides a detailed analysis of the lithologic composition, flow and storage capacities, and reservoir quality parameters of the Albian-Cenomanian reservoirs in the Ivorian sedimentary basin. The study reveals that the reservoirs in the eastern part of the basin have higher heterogeneity due to diagenetic factors such as cementation, silicification, authigenic clay minerals, and compaction. However, the reservoir quality in the eastern part of the basin improves due to increased grain size and interstitial pore types.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2022)
Article
Energy & Fuels
Ahmed A. Radwan, Bassem S. Nabawy
Summary: The study aimed to characterize the Early Pliocene sandstone (EP-SD) and Late Miocene-Early Pliocene Mangaa sandstone reservoirs in northern Taranaki basin, New Zealand using petrographical and petrophysical data. The sandstone units are poorly consolidated very fine sandstone to siltstone with average porosities of 25%, mainly composed of quartz, feldspars, and mica. The efficiency of the sealing cap rocks of these reservoirs is relatively low compared to central parts of the Taranaki Basin.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Energy & Fuels
Ahmed A. Kassem, Osama A. Osman, Bassem S. Nabawy, Ashraf R. Baghdady, Amer A. Shehata
Summary: This study explored the carbonate platform system of Turonian sediments in the Gulf of Suez and highlighted the significance of channelized reservoirs in oil production. The research analyzed facies change, depositional environment, and petrophysical characteristics to predict the distribution and discrimination of fluvial channel reservoirs. With the integration of petrography and petrophysics, the study identified optimal reservoir discrimination and rock typing, providing guidelines for future exploration and production in the basin.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Bassem S. Nabawy, Abdelbaset M. Abudeif, Marwa M. Masoud, Ahmed E. Radwan
Summary: This study focused on the Lower Jurassic rock sequence in Gebel El-Maghara in northern Sinai, Egypt, examining the mineral composition and diagenetic controls on petrophysical properties and reservoir characteristics. The research identified different reservoir rock types with varying qualities, providing valuable insights for reservoir exploration in the region.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Materials Science, Multidisciplinary
G. A. Khater, Bassem S. Nabawy, Amany A. El-Kheshen, Manal Abdel-Baki, M. M. Farag
Summary: Solid industrial wastes, blast furnace slag and ceramic sludge, were utilized to produce lightweight ceramic materials with high porosity. The prepared ceramic samples showed appropriate porosity and density for construction purposes. They also exhibited favorable electrical and dielectric properties, making them suitable for low-dielectric materials in electronics manufacturing.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Energy & Fuels
A. K. M. Eahsanul Haque, S. M. Talha Qadri, Md Anwar Hossain Bhuiyan, Mashrur Navid, Bassem S. Nabawy, Mohammed Hail Hakimi, Ahmed K. Abd-El-Aal
Summary: This study integrates well log and seismic attribute analyses to identify the characteristics of target horizons and improve understanding of the reservoir. The petrophysical analysis reveals the porosity, shale volume, and hydrocarbon content of the Mount Messenger Formation. Seismic attributes help quantify the reservoir property, and contour maps show significant reservoir zones. The study can be extended to a global scale for detailed analysis.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Riadh Ashoor, Bassem S. Nabawy, Adel Kamel
Summary: This study describes the petrophysical properties and reservoir quality of the Albian sequence in the Mesopotamian Basin based on well log and core data. The results show that the M and L1 units are the most promising reservoir units.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Amina Cherana, Leila Aliouane, Mohamed Z. Doghmane, Sid-Ali Ouadfeul, Bassem S. Nabawy
Summary: The main objective of this paper is to demonstrate the capability of the fuzzy clustering algorithm in discriminating lithofacies. The fuzzy algorithm can handle uncertainties and errors, and it outperforms other commonly applied neural network algorithms.
JOURNAL OF AFRICAN EARTH SCIENCES
(2022)
Article
Energy & Fuels
Nancy H. El Dally, Mahmoud S. S. Youssef, Mohamed H. Abdel H. Aal, Farouk I. I. Metwalli, Bassem S. S. Nabawy
Summary: This study focuses on delineating and analyzing the subsurface structural setting of Khalda Oil Field in the Shushan Basin, which is crucial for assessing the petrophysical properties and the deliverability of the Bahariya Formation. The results show the impact of gravity faulting on the Bahariya and Abu Roash formations, with the presence of NE-SW faulting dissecting the Khalda Field and E-W faulting in the study area. The petrophysical analysis indicates a good reservoir quality in the Lower Bahariya sandstone reservoir. This study provides valuable insights for future exploration in the Western Desert and North Africa.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Bassem S. Nabawy, Mohammed El -Bialy, Zakaria Hamimi, Hossam A. Khamis, Samar A. Abdel Wahed, Refaat A. Osman, Adel M. Afify
Summary: This study focuses on the litho- and microfacies of the Upper Cretaceous-Miocene sequence in West Esh El Mallaha area, Egypt, with an emphasis on carbonate rocks. The main objective is to understand the impact of facies and diagenetic processes on the storage capacity of the sequence. The studied sequence includes various formations deposited in shallow marine, lagoonal outer ramp, and high energy/open marine environments. Diagenetic processes such as neomorphism, calcite cementation, silicification, compaction, clay mineral alteration, dissolution, fracturing, and dolomitization have been identified. The storage capacity of the rock units is primarily affected by multiple cementation phases, but fracturing, dissolution, and dolomitization enhance the storage capacity.
JOURNAL OF AFRICAN EARTH SCIENCES
(2023)