Electrofacies-driven 3D-static reservoir modeling of the Late Cenomanian AbuRoash’G Member (Abu-Gharadig Basin, Egypt): Sequence stratigraphic and geomodel constraints for a gas-bearing estuarine system
Estuarine-systems, developed upon transgressive-phases, feature high-quality reservoir-facies, e.g. tidal-bars, that are important stratigraphic-plays critical for hydrocarbon exploration-development. However, capturing their intricate architectural elements (heterogeneity and quality) is still chal...
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KeAi Communications Co., Ltd.
2025-03-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2096249524000644 |
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| author | Mohammad A. Abdelwahhab Emad H. Ali Nabil A. Abdelhafez |
| author_facet | Mohammad A. Abdelwahhab Emad H. Ali Nabil A. Abdelhafez |
| author_sort | Mohammad A. Abdelwahhab |
| collection | DOAJ |
| description | Estuarine-systems, developed upon transgressive-phases, feature high-quality reservoir-facies, e.g. tidal-bars, that are important stratigraphic-plays critical for hydrocarbon exploration-development. However, capturing their intricate architectural elements (heterogeneity and quality) is still challenging due to the complex stacking-nature and limited-examples. Moreover, defining reservoir-boundaries upon static-modeling of reservoirs cannot be efficient unless it is controlled by stratal-geometries and established depositional-models. To this end, in this study, we performed 3D-static geocellular reservoir-modeling process for the Late-Cenomanian AbuRoash“G” Member (Abu-Gharadig Basin, Egypt) with sequence-stratigraphic and geomodel, relative-geological-time (RGT) model and horizon-stacks, constraints. In this investigation, as an effective-workflow, not only facies-analysis, integrating seismic-stratigraphy and GR-log motifs, was applied for paleo-environment reconstruction, but also machine learning-based electrofacies were applied, through self-organized-maps (SOM), to accurately recognize complex facies-assemblages present. Object-based and pixel-based stochastic-simulation processes were applied upon geocellularly modeling rock and fluid properties, utilizing key-information scales of seismic and well-log data. The results show that three third-order depositional sequences dominate the succession, resting on the Late-Cretaceous unconformity, of which sequence-1 encloses the lowstand and transgressive systems-tracts of the fluvio-estuarine Bahariya and Abu Roash“G” units, respectively. The transgressive phase built AbuRoash“G” lithounit features an estuarine depositional-system encompassing four facies-associations, of which tidal-sand-bars represent significant gas-bearing reservoir-quality facies. The tidal-bar facies’ efficient reservoir quality calls for attention and testing in future development plans and investigation in similar settings. Furthermore, the facies-constrained workflow established in this study, for reservoir modeling, can effectively help identify the ultimate reservoir-configuration worldwide, as long as the 3D-static modeling process is controlled by the stratal and geomodel restraints. |
| format | Article |
| id | doaj-art-9bc2f7b4b6414dd882c532a03835396e |
| institution | DOAJ |
| issn | 2096-2495 |
| language | English |
| publishDate | 2025-03-01 |
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| series | Petroleum Research |
| spelling | doaj-art-9bc2f7b4b6414dd882c532a03835396e2025-08-20T02:40:29ZengKeAi Communications Co., Ltd.Petroleum Research2096-24952025-03-011017910410.1016/j.ptlrs.2024.07.004Electrofacies-driven 3D-static reservoir modeling of the Late Cenomanian AbuRoash’G Member (Abu-Gharadig Basin, Egypt): Sequence stratigraphic and geomodel constraints for a gas-bearing estuarine systemMohammad A. Abdelwahhab0Emad H. Ali1Nabil A. Abdelhafez2Geology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, Egypt; Corresponding author. Geology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, Egypt.Geology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, Egypt; Oman Sea PetroServices LLC., OmanGeology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo, 11884, EgyptEstuarine-systems, developed upon transgressive-phases, feature high-quality reservoir-facies, e.g. tidal-bars, that are important stratigraphic-plays critical for hydrocarbon exploration-development. However, capturing their intricate architectural elements (heterogeneity and quality) is still challenging due to the complex stacking-nature and limited-examples. Moreover, defining reservoir-boundaries upon static-modeling of reservoirs cannot be efficient unless it is controlled by stratal-geometries and established depositional-models. To this end, in this study, we performed 3D-static geocellular reservoir-modeling process for the Late-Cenomanian AbuRoash“G” Member (Abu-Gharadig Basin, Egypt) with sequence-stratigraphic and geomodel, relative-geological-time (RGT) model and horizon-stacks, constraints. In this investigation, as an effective-workflow, not only facies-analysis, integrating seismic-stratigraphy and GR-log motifs, was applied for paleo-environment reconstruction, but also machine learning-based electrofacies were applied, through self-organized-maps (SOM), to accurately recognize complex facies-assemblages present. Object-based and pixel-based stochastic-simulation processes were applied upon geocellularly modeling rock and fluid properties, utilizing key-information scales of seismic and well-log data. The results show that three third-order depositional sequences dominate the succession, resting on the Late-Cretaceous unconformity, of which sequence-1 encloses the lowstand and transgressive systems-tracts of the fluvio-estuarine Bahariya and Abu Roash“G” units, respectively. The transgressive phase built AbuRoash“G” lithounit features an estuarine depositional-system encompassing four facies-associations, of which tidal-sand-bars represent significant gas-bearing reservoir-quality facies. The tidal-bar facies’ efficient reservoir quality calls for attention and testing in future development plans and investigation in similar settings. Furthermore, the facies-constrained workflow established in this study, for reservoir modeling, can effectively help identify the ultimate reservoir-configuration worldwide, as long as the 3D-static modeling process is controlled by the stratal and geomodel restraints.http://www.sciencedirect.com/science/article/pii/S2096249524000644Electrofacies3D-static reservoir modelingFacies analysisEstuarine systemsAbu roash “G” memberAbu Gharadig basin |
| spellingShingle | Mohammad A. Abdelwahhab Emad H. Ali Nabil A. Abdelhafez Electrofacies-driven 3D-static reservoir modeling of the Late Cenomanian AbuRoash’G Member (Abu-Gharadig Basin, Egypt): Sequence stratigraphic and geomodel constraints for a gas-bearing estuarine system Petroleum Research Electrofacies 3D-static reservoir modeling Facies analysis Estuarine systems Abu roash “G” member Abu Gharadig basin |
| title | Electrofacies-driven 3D-static reservoir modeling of the Late Cenomanian AbuRoash’G Member (Abu-Gharadig Basin, Egypt): Sequence stratigraphic and geomodel constraints for a gas-bearing estuarine system |
| title_full | Electrofacies-driven 3D-static reservoir modeling of the Late Cenomanian AbuRoash’G Member (Abu-Gharadig Basin, Egypt): Sequence stratigraphic and geomodel constraints for a gas-bearing estuarine system |
| title_fullStr | Electrofacies-driven 3D-static reservoir modeling of the Late Cenomanian AbuRoash’G Member (Abu-Gharadig Basin, Egypt): Sequence stratigraphic and geomodel constraints for a gas-bearing estuarine system |
| title_full_unstemmed | Electrofacies-driven 3D-static reservoir modeling of the Late Cenomanian AbuRoash’G Member (Abu-Gharadig Basin, Egypt): Sequence stratigraphic and geomodel constraints for a gas-bearing estuarine system |
| title_short | Electrofacies-driven 3D-static reservoir modeling of the Late Cenomanian AbuRoash’G Member (Abu-Gharadig Basin, Egypt): Sequence stratigraphic and geomodel constraints for a gas-bearing estuarine system |
| title_sort | electrofacies driven 3d static reservoir modeling of the late cenomanian aburoash g member abu gharadig basin egypt sequence stratigraphic and geomodel constraints for a gas bearing estuarine system |
| topic | Electrofacies 3D-static reservoir modeling Facies analysis Estuarine systems Abu roash “G” member Abu Gharadig basin |
| url | http://www.sciencedirect.com/science/article/pii/S2096249524000644 |
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