Article
Geosciences, Multidisciplinary
Sahar Hassan, Sameh S. Tahoun, Mohamed Darwish, William Bosworth, Ahmed E. Radwan
Summary: An integrated approach combining borehole image logs, palynology, and conventional wireline logs, as well as global chronostratigraphic charts, has been used to study the chrono-lithological boundary between the Kharita and Bahariya formations and the Albian and Cenomanian Stages in the Abu Gharadig Basin. The interpreted reservoir intervals suggest that the hydrocarbons trapped in the Albian-Cenomanian reservoirs are composed of type II/III kerogen. The study provides comprehensive information about the Albian-Cenomanian succession in the Northern Western Desert.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Ahmed Mansour, Thomas Gentzis, Sameh S. Tahoun, Mohamed S. Ahmed, Michael Wagreich, Humberto Carvajal-Ortiz, Jacob Neumann, Ahmed E. Radwan
Summary: During the Early Cretaceous (Albian), there was a global warming and increased environmental perturbations, resulting in the accumulation of organic carbon-rich sediments. In the southern margin of the Tethys Ocean, there were shallow water conditions with some phases of bottom water anoxia. The Kharita Formation in the Abu Gharadig Basin underwent palynological analysis, organic matter characterization, hydrocarbon generation potential assessment, and thermal maturity assessment.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Somia G. Said, Sameh S. Tahoun, Tamer R. Galal, Nadia K. Effat
Summary: This study analyzed 274 samples to investigate the palynomorphs content of the Bahariya Formation in the Abu Gharadig Basin. A total of 107 species of spores, pollen grains, and dinoflagellate cysts were extracted, and six significant first downhole appearance sporomorph events were defined for stratigraphic purposes. These events could potentially serve as bio-correlation tools for the Bahariya sections in the basin.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Energy & Fuels
Mohammad Abdelfattah Sarhan
Summary: The study focuses on the geophysical assessment of the sandstones in Abu Roash C and E members as potential hydrocarbon reservoirs in Abu Gharadig Field, Western Desert, Egypt. Analysis of seismic and well-log data revealed favorable zones for drilling in Abu Roash C and E members, with the former showing better reservoir quality. This indicates a priority for drilling efforts in sandy levels of Abu Roash C Member followed by Abu Roash E Member in the study area and its surroundings.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
A. Saad, Th. Abdel Fattah, H. Holial, A. I. Diab, S. Abou Shagar
Summary: The study focuses on understanding the structural elements controlling the hydrocarbon potential and productivity of upper Cretaceous reservoirs in the Eastern flank of the Abu Gharadig Basin in the Western Desert of Egypt. Major sandstone reservoirs in this area, particularly Abu Roash G Member and Upper Bahariya Formation, exhibit lateral facies changes and significant structure uncertainty with high hydrocarbon potential. The aim of the study is to identify the regional lateral distribution of these reservoirs in specific fields within the area through integrated geological and geophysical studies for future exploration activities.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Mohammad Abdelfattah Sarhan
Summary: This study assessed the sandstones of the Bahariya Formation in the Abu Gharadig Field, a potential oil reservoir in the Abu Gharadig Basin in Western Desert, Egypt. Seismic and petrophysical analyses revealed potential oil-bearing zones, with intervals B and C in well AG-6 showing the highest oil-bearing potential. Additional drilling near well AG-6 is highly recommended based on the mapped fold structure.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
J. C. Saucedo-Samaniego, J. Madhavaraju, Alcides N. Sial, R. Monreal, Robert W. Scott, O. Perez-Arvizu
Summary: The study on limestones from the Agua Salada and Lampazos formations in Mexico revealed different REE+Y patterns in different stratigraphic layers, indicating variations in seawater precipitation and non-seawater components. Changes in Ce anomalies were influenced by paleo-redox conditions, while the original marine signatures of 813C values were retained during diagenesis. Significant negative isotopic excursions in the 813C curve documented OAE 1b and associated sub-events such as Jacob, Kilian, Paquier, and Leenhardt sub-events.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Energy & Fuels
M. F. Abu-Hashish, M. M. Abuelhassan, Gamal Elsayed
Summary: Recent advances in computer sciences have greatly improved the accuracy and detail of reservoir modeling, which is crucial for understanding and studying reservoir morphology and properties. This paper presents a case study of the Abu Roash G reservoir in the Hamra oil field, where a three-dimensional reservoir model was constructed to represent both vertical and lateral heterogeneity. Through interpretation of seismic data, fault picking, and well log data analysis, the lithology and physical properties of the reservoir were determined, highlighting the control of facies distribution and structural elements on rock properties.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(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
Geosciences, Multidisciplinary
Sherif Farouk, Souvik Sen, Tamer Abu-Alam, Khaled Al Kahtany, Mohamed Abioui
Summary: This study evaluates the geomechanical characteristics of the unconventional reservoir of AR-F carbonates in the Abu Gharadig field in Egypt. The study found that the reservoir has low porosity and permeability, indicating its tight nature. Hydraulic fracturing is necessary for production from this reservoir.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Sherif Farouk, Souvik Sen, Shib Sankar Ganguli, Fayez Ahmad, Mohamed Abioui, Khaled Al-Kahtany, Priyantan Gupta
Summary: This study focuses on the Lower Turonian Abu Roash-F Member in the Abu Gharadig field, Egypt, which has good organic carbon content and indicates an open-marine, deep-shelf depositional setting, making it suitable as an unconventional reservoir.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Belal Mohamed Abdelhamed, Sultan Awad Sultan Araffa, Tharwat Abdelhafeez
Summary: The current study aims to determine the basement configuration and basement-related structural elements of the Abu Gharadig basin. Using integrated interpretation of potential field and seismic reflection data, the study delineates the subsurface features that affect the configuration of reservoirs in the area. Main faults, with NW-SE and NWN-SES trends, primarily affect the Lower and Upper Cretaceous sequences, which have an impact on the structural configuration of the oil fields.
EXPLORATION GEOPHYSICS
(2023)
Article
Geosciences, Multidisciplinary
Mohamed M. Elhossainy, Moataz El-Shafeiy, Nabil M. Al-Areeq, Dina Hamdy
Summary: This study presents a comprehensive investigation of the Middle-Late Cretaceous source rocks in the Abu Gharadig Field using source rock evaluation techniques and hydrocarbon generation modeling. The results indicate that most of the studied marine intervals in the field are considerable as source rocks, with the exception of the Abu Roash A-D members. The study also reveals spatial and temporal discrepancies in the thermal maturity and organic composition of the rock units, suggesting the influence of factors such as paleoclimate, eustatic, and basin tectonics. Integrated approaches are needed to further explore the driving forces behind these organics-accumulating events.
GEOLOGICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Sherif Farouk, Souvik Sen, Hesham Abuseda, Yasmen El-Shamly, Alaa Salam, Mohamed Mahmoud Elhossainy
Summary: This study presents a comprehensive petrophysical assessment of the Cenomanian and Turonian members of the Abu Gharadig field in the Western Desert, Egypt. The Cenomanian member has poor reservoir quality and requires a suitable stimulation strategy for production, while the Turonian member has good permeability and porosity. The Bahariya Formation consists of high porosity and permeability sandstone, but with high water saturation.
NATURAL RESOURCES RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Ahmed Elmasry, Saad A. Mohallel, Ahmed Madani, Hakim Saibi, Mohamed Abdel Zaher, Tamer Nassar
Summary: The Abu Gharadig Basin in Egypt is a significant oil-producing basin, characterized by tectonic structures and a thick sedimentary sequence, making it ideal for geothermal energy research. The study analyzed groundwater samples from wells in the basin and found that the water has Na+ cations and Cl anions, originating from precipitation and runoff. The application of cation geothermometers revealed that the groundwater is in partial equilibrium with the host rock and may come from mixed sources. The estimated temperature of the deep geothermal reservoir is 127-184 degrees C, with an average of 157 degrees C, using cation geothermometry. Stochastic Monte Carlo simulations estimated the geothermal power potential in the AGB, with 14.3 MWe for a 25-year lifespan and 7.16 MWe for a 50-year lifespan for a 1 km2 site.
JOURNAL OF AFRICAN EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Ahmed Mansour, Thomas Gentzis, Sameh S. Tahoun, Mohamed S. Ahmed, Michael Wagreich, Humberto Carvajal-Ortiz, Jacob Neumann, Ahmed E. Radwan
Summary: During the Early Cretaceous (Albian), there was a global warming and increased environmental perturbations, resulting in the accumulation of organic carbon-rich sediments. In the southern margin of the Tethys Ocean, there were shallow water conditions with some phases of bottom water anoxia. The Kharita Formation in the Abu Gharadig Basin underwent palynological analysis, organic matter characterization, hydrocarbon generation potential assessment, and thermal maturity assessment.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geochemistry & Geophysics
Douaa Fathy, Rainer Abart, Michael Wagreich, Susanne Gier, Mohamed S. Ahmed, Mabrouk Sami
Summary: This study evaluated the continental weathering intensity, climatic changes, and their impact on the deposition of Late Campanian black shale in the Western Desert of Egypt using mineralogical and geochemical data. The results showed that the black shale was deposited under warm/humid conditions based on its high concentrations of certain elements and specific geochemical ratios. The weathering intensity was strongly influenced by paleoclimate, but had a weak impact on oceanic nutrient fluxes and water salinity during the deposition of Late Campanian black shale.
Editorial Material
Geosciences, Multidisciplinary
Colin N. Waters, Martin J. Head, Jan Zalasiewicz, Francine M. G. McCarthy, Scott L. Wing, Peter K. Haff, Mark Williams, Anthony D. Barnosky, Barbara Fialkiewicz-Koziel, Reinhold Leinfelder, J. R. McNeill, Neil L. Rose, Will Steffen, Colin P. Summerhayes, Michael Wagreich, Zhisheng An, Alejandro Cearreta, Andrew B. Cundy, Ian J. Fairchild, Agnieszka Galuszka, Irka Hajdas, Yongming Han, Juliana A. Ivar do Sul, Catherine Jeandel, Jaia Syvitski, Simon D. Turner, Jens Zinke
Summary: Merritts et al. inaccurately portray Paul Crutzen's Anthropocene concept, misinterpreting it as encompassing all significant anthropogenic impacts, extending back many millennia. Waters et al. introduced the concept of a Great Acceleration Event Array (GAEA) which highlights diverse and complex stratigraphic event markers that are tightly clustered around 1950 CE, providing a clearly recognizable Anthropocene chronostratigraphic base. The 'Anthropocene event' proposed by Merritts et al., following Gibbard et al., confuses the transformative human impact of the chronostratigraphic Anthropocene. Waters et al. recognize an evidence-based Anthropogenic Modification Episode that is more explicitly defined than the interpretive interdisciplinary 'Anthropocene event' of Gibbard et al.
EARTH-SCIENCE REVIEWS
(2023)
Article
Biology
Adam Wierzbicki, Erik Wolfgring, Michael Wagreich, Mariusz Kedzierski, Regina Mertz-Kraus
Summary: The periodicity of celestial bodies' mutual position is essential for life on Earth. In this study, we analyzed the fossilized shell of Inoceramus (Platyceramus) salisburgensis and discovered a regular geochemical signal repetition with a cycle of approximately 0.006 mm. The estimated shell accretion rate is about 0.4 cm per lunar year. We identified a biological clock that follows either a semilunar or a tidal cycle, and the tidal dominance cycle seems to be a better fit for the behavior of I. (P.) salisburgensis.
Article
Energy & Fuels
Adedoyin Adeyilola, Natalia Zakharova, Kouqi Liu, Thomas Gentzis, Humberto Carvajal-Ortiz, Hallie Fowler, William B. Harrison III
Summary: This study provides a comprehensive description of the pore system of the Antrim Shale in the Michigan Basin, including porosity, pore size distribution, pore morphology, and mineral associations. The results show that the organic content controls gas sorption and storage capacity.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Energy & Fuels
Ahmed Mansour, Thomas Gentzis, Sameh S. Tahoun, Mohamed S. Ahmed, Susanne Gier, Humberto Carvajal-Ortiz, Jacob Neumann, Xiugen Fu, Jian Wang
Summary: During the Late Cretaceous, there was a major marine transgression in north Africa, which was interrupted by sea level falls and resulted in the accumulation of organic matter-rich sediments. The Bahariya Formation in northern Egypt was deposited in the Abu Gharadig Basin and characterized by thick alternations of siliciclastic sediments. An integrated approach was used to analyze the organic matter and its paleoenvironmental and paleoclimatic conditions. The results show a warm and humid climate, gas-prone kerogen, and low organic carbon contents in the Bahariya Formation.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Shahid Iqbal, Mehwish Bibi, Michael Wagreich
Summary: Bauxite deposits in the Salt Range, Pakistan, formed through intense weathering under warm and humid conditions during the Triassic-Jurassic Boundary. These deposits are rich in kaolinite, haematite, boehmite, and enriched in trace elements and Rare Earth Elements. They are synchronous with bauxite deposits in the Alborz Mountains, Iran, suggesting an eastward extension of these deposits.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2023)
Article
Geography, Physical
Martin J. Head, Colin N. Waters, Jan A. Zalasiewicz, Anthony D. Barnosky, Simon D. Turner, Alejandro Cearreta, Reinhold Leinfelder, Francine M. G. McCarthy, Daniel de B. Richter, Neil L. Rose, Yoshiki Saito, Davor Vidas, Michael Wagreich, Yongming Han, Colin P. SumMerhayes, Mark Williams, Jens Zinke
JOURNAL OF QUATERNARY SCIENCE
(2023)
Article
Geochemistry & Geophysics
Ahmed Mansour, Sameh S. Tahoun, Aya Raafat, Mohamed S. Ahmed, Francisca Oboh-Ikuenobe, Thomas Gentzis, Xiugen Fu
Summary: This study conducted a comprehensive analysis of the Middle Jurassic in the north Western Desert, Egypt, and identified four different paleoenvironmental characteristics. The results showed that organic carbon-rich fine siliciclastic and carbonate deposits were predominantly found in the area. The composition of particulate organic matter, plant debris, and dinoflagellate cysts, as well as the types of organic matter in the rocks, reflected the depositional paleoenvironmental patterns. These findings are of great significance for a better understanding of the paleoenvironmental evolution and hydrocarbon potential in the region.
Article
Geochemistry & Geophysics
Ahmed Mansour, Sameh. S. S. Tahoun, Aya Raafat, Mohamed. S. S. Ahmed, Thomas Gentzis
Summary: This study conducted a detailed palynomorph and palynofacies analysis of the Middle Jurassic Khatatba Formation in the Dahab-Mireir Basin, revealing moderately diverse palynomorph assemblage and palynofacies. The findings provide insights into different depositional environments and relative sea level changes, which are of significant importance for understanding basin history, reservoirs, and source rock units.
Article
Biodiversity Conservation
Mostafa Mohamed Sayed, Petra Heinz, Ibrahim Mohamed Abd El-Gaied, Michael Wagreich
Summary: The Eocene deposits of Egypt provide valuable information for reconstructing the paleoenvironment during this warmhouse climate interval. The studied rock samples showed rich benthic foraminiferal assemblages and limited occurrences of planktonic foraminifera. The identified species indicate the presence of moderate to high oxygen levels and warm climatic conditions.
Article
Geochemistry & Geophysics
Susanne Jamaluddin, Michael Wagreich, Susanne Gier, Katerina Schopfer, Desianto Payung Battu
Summary: This study evaluates the paleoenvironment and paleoclimatic controls of sediments in the Middle Miocene Balikpapan Group, Mahakam Delta of the Lower Kutai Basin, Indonesia. The results show that fluvio-deltaic depositional environment and humid tropical climate are the primary factors controlling the production, transport, distribution, and preservation of sedimentary organic matter.
Article
Geology
Polina Pavlishina, Docha Dochev, Michael Wagreich, Veronika Koukal
Summary: This article describes and stratigraphically calibrates the Upper Cretaceous succession (Coniacian to lowermost Maastrichtian, with focus on the Campanian) at Petrich, Central Srednogorie Zone in Bulgaria, based on nannofossils, dinoflagellate cysts, and inoceramids. The study identifies several standard nannofossil zones and subzones and correlates them with dinoflagellate cyst zones and inoceramid assemblages. The composition of the dinoflagellate cyst assemblages and palynofacies pattern indicates normal marine, oxic conditions and low nutrient availability during the Campanian.
ACTA GEOLOGICA POLONICA
(2023)