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
Boyuan Zhu, Renfang Pan, Chaomo Zhang, Zhansong Zhang, Wenrui Shi
Summary: This study characterizes the hydrothermal alteration reservoirs of metamorphic and igneous rocks through the construction of a new logging-rock mechanical alteration degree subtraction model. The relationship between lithologies with different alteration degrees and reservoir quality is revealed. The study finds that feldspar chloritization and sericitization are the main factors controlling hydrothermal alteration of the reservoir, and strongly altered igneous facies have poor reservoir performance while weakly altered metamorphic facies have high reservoir productivity.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Environmental Sciences
Abeer A. Abuhagaza, Marwa Z. El Sawy, Bassem S. Nabawy
Summary: This study applied various techniques to characterize precisely the reservoirs of the Lower Cretaceous Bentiu and Abu Gabra Formations in the Muglad Basin of Sudan. The Abu Gabra-Bentiu sequence consists of four petrographical microfacies, with RRT1 being the reservoir rock type with the highest reservoir quality, mainly composed of quartz arenites.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Mimonitu Opuwari, Saeed Mohammed, Charlene Ile
Summary: The study aimed to generate a sandstone reservoir zonation using core measurements of porosity and permeability in three wells in the E-M gas field offshore South Africa. The evaluation identified five facies and integrated multiple reservoir classification methods to identify twelve flow zones, ranging from high to very low efficiency. The results will serve as input parameters for further reservoir studies in the Western Bredasdorp Basin.
NATURAL RESOURCES RESEARCH
(2021)
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
Energy & Fuels
Amir Karimian Torghabeh, Jafar Qajar, Ali Dehghan Abnavi
Summary: This study integrates the concepts of electrofacies (EFs) and hydraulic flow units (HFUs) to effectively characterize Permo-Triassic carbonate formations at the Kangan giant gas field in southwestern Iran. By analyzing well log data and core data, the study identifies electrofacies and hydraulic flow units, and establishes a connection between them to accurately characterize the hydrocarbon-bearing formations. The results of this study assist in rapid and cost-effective reservoir characterization and provide guidance for field development and production.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Perveiz Khalid, Muhammd Irfan Ehsan, Shahzada Khurram, Irfan Ullah, Qazi Adnan Ahmad
Summary: This study re-evaluates the reservoir characteristics and facies identification of the Sui Main Limestone in the Qadirpur field of Pakistan's Middle Indus Basin using petrophysical analysis and rock physics modeling. The study finds that the limestone exhibits micro-fractures and well-connected secondary pores, and the clean carbonate intervals have the potential for hydrocarbon accumulation. This research is significant for improving reservoir quality prediction in heterogeneous carbonate reservoirs and optimizing field development.
FRONTIERS IN EARTH SCIENCE
(2022)
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
Geosciences, Multidisciplinary
Umid Kakemem, Mohammadfarid Ghasemi, Mohammad Hossein Adabi, Antun Husinec, Ayoub Mahmoudi, Kresten Anderskouv
Summary: A sedimentological and sequence stratigraphic analysis was conducted on cores from gas fields in the Persian Gulf to evaluate a method for automatic reservoir zonation. The study found that the reservoir quality of the Upper Dalan Formation is influenced by various factors, including dolomitization, dissolution, pore-filling anhydrite cementation, compaction, and over-dolomitization.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Amr S. Deaf, Awad A. Omran, Eman S. Zain El-Arab, Abu Bakr F. Maky
Summary: This study analyzed the upper Khatatba Formation in a well in northern Egypt and found potential shale gas resources in the region. However, the present high thermal maturation has resulted in lower quality of active organic matter.
MARINE AND PETROLEUM GEOLOGY
(2022)
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
Jian Yi, Huiyong Li, Xuanlong Shan, Guoli Hao, Haifeng Yang, Qingbin Wang, Peng Xu, Shuyue Ren
Summary: This study proposes a classification scheme for the vertical reservoir units of two types of Archaeozoic buried hills in the Bozhong Sag, Bohai Bay Basin, based on various data sources. The geological characteristics and storage spaces of these reservoir units are described, and identification markers in conventional and imaging log curves are established. The study also identifies the favorable reservoir locations and controlling factors for different types of Archaeozoic buried hills.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
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
Energy & Fuels
Abdel Moktader A. El-Sayed, Nahla A. El Sayed, Hadeer A. Ali, Mohamed A. Kassab, Salah M. Abdel-Wahab, Moataz M. Gomaa
Summary: This study evaluates the reservoir quality of the Nubia Formation sandstone in southwest Sinai, Egypt using hydraulic flow units (HFU) and electrical flow units (EFU). The analysis shows that the sandstones are mainly quartz arenite and are affected by diagenetic processes. Parameters for discriminating HFUs include permeability and porosity relationship, while EFUs are differentiated based on the relationship between formation resistivity factor and porosity.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Adeeb Ahmed, Samina Jahandad, Mohammed Hail Hakimi, Abbas F. Gharib, Saqib Mehmood, Ali Y. Kahal, Muhammad Asif Khan, Muhammad Nofal Munir, Aref Lashin
Summary: The study indicates that the Datta shale has good source rock generation potential, with mainly Type II and mixed Type II-III kerogen, capable of generating both oil and gas.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
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
Energy & Fuels
Mohammed Hail Hakimi, Shadi A. Saeed, Ameen A. Al-Muntaser, Mikhail A. Varfolomeev, Richard Djimasbe, Aref Lashin, Nura Abdulmumini Yelwa, Muneer A. Suwaid
Summary: The four oil samples from the western Siberian Basin are paraffinic oils, likely originating from source rock with low sulfur content of Type-II; the distributions of n-alkane and isoprenoid suggest a mixed organic matter input in a depositional environment ranging from suboxic to relatively oxic.
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
Geochemistry & Geophysics
Aref Lashin, Mohamed Hail Hakimi, Faisal AlGhamdi, Abiodun Matthew Amao, Abdulrahman AlQuraishi, Khalid Abdel Fattah, Abdulaziz Bin Laboun
Summary: This study examines the organic matter in the dark shale samples of the Silurian Qusaiba Formation from Saudi Arabia. The samples indicate a marine environment with varying oxygen levels. Biomarkers suggest that the organic matter primarily comes from marine organisms and was deposited in conditions of low oxygen. Inorganic geochemical indicators point to a warm-humid climate and low salinity stratification conditions for the water columns in which the Qusaiba shales accumulated.
Article
Geochemistry & Geophysics
Aref Lashin, Mohammed Abu Anbar, Essam Aboud, Faisal Zaidi, Abdulaziz Al-Bassam, Nassir Al Arifi, Emad Al-Homadhi
Summary: This study focuses on the late stage of the Arabian Shield evolution and reveals the presence of post-collisional magmatism in the central and northern parts of the Arabian Shield. The studied granites are mainly composed of alkali feldspar granite and syenogranite, showing enrichment in light rare earth elements and depletion in heavy rare earth elements. They likely represent good sources of geothermal heat, uranium-thorium, and rare earth element mineralization.
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)
Article
Multidisciplinary Sciences
Mohammed Hail Hakimi, Mohammad Alqudah, Khairul Azlan Mustapha, Mikhail A. Varfolomeev, Aref Lashin, Baleid Ali Hatem, Afikah Rahim, Souvik Sen, Ahmed E. Radwan, Nura Abdulmumini Yelwa
Summary: This study examines the geochemical and petrological characteristics of carbonate-rich sediments from the Upper Cretaceous Shu'ayb Formation in northern Jordan. The organic matter characteristics and geological temperatures for oil generation are analyzed. The results suggest the presence of high TOC and hydrogen index, indicating Types I-II kerogens. The organic facies are sulfur-rich and exhibit the potential for producing paraffinic oil with low wax content. The distribution of activation energy and vitrinite reflectance values further support the Type II-S kerogen organic facies. This research provides insights into the organic-rich carbonate's potential for generating sulfur-rich oils.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Mohammed Hail Hakimi, Abbas F. Gharib, Nor Syazwani Z. Abidin, Adeeb Ahmed, Mohamed M. El Nady, Madyan M. A. Yahya, Aref A. Lashin
Summary: This study analyzed the geochemical characteristics of oil stains from the Cretaceous Harshiyat Formation in eastern Yemen, indicating a mixed organic matter input from a mature source rock. Biomarkers suggested the presence of marine and terrestrial organic matter in the source rock, with indicators correlating well with shales in the Late Cretaceous Harshiyat Formation. The analyzed oil stains likely originated from a mature source rock and migrated into sandstone and limestone reservoirs in the North Hadramaut High area through normal faults.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Samuel Yaw Danso, Yi Ma, Adams Osman, Isaac Yeboah Addo
Summary: This study conducted a spatial assessment and mapping of flood hazards in the Sekondi-Takoradi Metropolis (STM) of Ghana using the Analytical Hierarchy Process (AHP) and geographical information system. The results indicate that about 12% of STM lands are in very high flood zones and 24% are in high flood zones. The lower portions of STM are identified as the most susceptible to inundation. These findings provide valuable insights for effective flood planning and prevention in STM.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Kesyton Oyamenda Ozegin, Stephen Olubusola Ilugbo
Summary: The study utilizes analytical hierarchical process and geoinformatics-based approaches to define groundwater potential zones in Edo State, Nigeria. The results show that high groundwater potential zones are mainly located in Edo-central and isolated portions of Edo-south, while low to very low potential zones are found in the study's northern region.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Maham Eboubekrine Sedigh, Houssa Ouali, Michel Jebrak, Abdelkader Mokhtari
Summary: The carbonatites from the Richat dome in Mauritania are unique and underdocumented geological features. This study provides insight into the mineralogy and petrogenesis of the carbonatites, revealing three identified types and their association with spinel-bearing peridotite. The geochemical characteristics of the Richat carbonatites are similar to other Cretaceous alkaline carbonatite occurrences in different regions, suggesting a common geological process. The reactivation of a deep pan-African lineament is considered a fundamental factor in the formation of the Richat carbonatites.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Riadh Aouissi, Gamal Mohamed El Qot, Sihem Salmi-Laouar, Catalina Gomez-Espinosa, Blanca E. Buitron-Sanchez
Summary: Twenty-one gastropod species have been identified in the Cenomanian deposits of Bellezma-Aures mountains, eastern Saharan Atlas, Algeria, with four of them recorded for the first time in the Batna mountains. These gastropods are mainly found in the 'Marnes de Smail' Formation, and their community changes may be attributed to minor sea-level fluctuations, sedimentation rate variations, and hydrodynamics. The paleobiogeographic distribution of these gastropod assemblages indicates a tethyan affinity and faunal exchange during that time interval.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Behnam Esmaeili, Sirous Hosseinzadeh, Ali Kadkhodaie, David A. Wood, Samira Akbarzadeh
Summary: This research applies image analysis and clustering algorithms to estimate porosity and permeability of petroleum reservoir rocks, and demonstrates that the results from image analysis are consistent with traditional analysis methods, with acceptable correlation. In addition, different depositional environments and hydraulic flow units are identified through image analysis.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Jianqi Zhuang, Jianbing Peng, Zhenhong Li, Yanqiu Leng, Xinghua Zhu, Weiliang Huang, Zhijie Jia, Yang Liu, Yi Zhu
Summary: The study on gully erosion in the East African Rift Valley of Kenya reveals that human activities and rainstorms are the main factors causing erosion. Gully erosion poses a serious threat to the ecological environment, particularly the man-made and fissure-induced gullies that should be further investigated.
JOURNAL OF AFRICAN EARTH SCIENCES
(2024)
