A case study of reservoir characterization and modeling for tidal-dominated estuary reservoir in Ecuador
Abstract The Oriente Basin, as part of the retro-arc foreland basin system, develops tidal-dominated estuary, where the LU layer exhibits complex sedimentary characteristics in lateral that brings great uncertainty to reservoir characterization using only wells. As a result, it is essential to inves...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-025-03591-7 |
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| author | Cheng Jiwei Zhang Kexin Zhang Chaoqian Li Yunbo Feng Taoran Liu Jian Xu Xianglin Ma Zhongzhen |
| author_facet | Cheng Jiwei Zhang Kexin Zhang Chaoqian Li Yunbo Feng Taoran Liu Jian Xu Xianglin Ma Zhongzhen |
| author_sort | Cheng Jiwei |
| collection | DOAJ |
| description | Abstract The Oriente Basin, as part of the retro-arc foreland basin system, develops tidal-dominated estuary, where the LU layer exhibits complex sedimentary characteristics in lateral that brings great uncertainty to reservoir characterization using only wells. As a result, it is essential to investigate the sedimentary characteristics of the tidal-dominated estuary by incorporating seismic data. First, four electrofacies are established to characterize the logging response of various lithology combinations in an estuary setting. The seismic facies are then studied by establishing the relationship between seismic waveforms and logging response. Finally, a reservoir model of the LU layer is built by quantitatively characterizing the spatial distribution of sedimentary facies based on the electrofacies and seismic facies. Bottom-water reservoirs are reinterpreted as a combination of the upper edge-water reservoir and the lower bottom-water reservoir based on the characterization results, which are verified by the new drilling wells. |
| format | Article |
| id | doaj-art-e593e9be42404bf39a3d932236773a6e |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-e593e9be42404bf39a3d932236773a6e2025-08-20T02:30:41ZengNature PortfolioScientific Reports2045-23222025-06-0115111610.1038/s41598-025-03591-7A case study of reservoir characterization and modeling for tidal-dominated estuary reservoir in EcuadorCheng Jiwei0Zhang Kexin1Zhang Chaoqian2Li Yunbo3Feng Taoran4Liu Jian5Xu Xianglin6Ma Zhongzhen7PetroChina Research Institute of Petroleum Exploration and DevelopmentCNPC Andes (Ecuador) Company LimitedPetroChina Research Institute of Petroleum Exploration and DevelopmentPetroChina Research Institute of Petroleum Exploration and DevelopmentPetroChina Research Institute of Petroleum Exploration and DevelopmentPetroChina Research Institute of Petroleum Exploration and DevelopmentCNPC Andes (Ecuador) Company LimitedPetroChina Research Institute of Petroleum Exploration and DevelopmentAbstract The Oriente Basin, as part of the retro-arc foreland basin system, develops tidal-dominated estuary, where the LU layer exhibits complex sedimentary characteristics in lateral that brings great uncertainty to reservoir characterization using only wells. As a result, it is essential to investigate the sedimentary characteristics of the tidal-dominated estuary by incorporating seismic data. First, four electrofacies are established to characterize the logging response of various lithology combinations in an estuary setting. The seismic facies are then studied by establishing the relationship between seismic waveforms and logging response. Finally, a reservoir model of the LU layer is built by quantitatively characterizing the spatial distribution of sedimentary facies based on the electrofacies and seismic facies. Bottom-water reservoirs are reinterpreted as a combination of the upper edge-water reservoir and the lower bottom-water reservoir based on the characterization results, which are verified by the new drilling wells.https://doi.org/10.1038/s41598-025-03591-7 |
| spellingShingle | Cheng Jiwei Zhang Kexin Zhang Chaoqian Li Yunbo Feng Taoran Liu Jian Xu Xianglin Ma Zhongzhen A case study of reservoir characterization and modeling for tidal-dominated estuary reservoir in Ecuador Scientific Reports |
| title | A case study of reservoir characterization and modeling for tidal-dominated estuary reservoir in Ecuador |
| title_full | A case study of reservoir characterization and modeling for tidal-dominated estuary reservoir in Ecuador |
| title_fullStr | A case study of reservoir characterization and modeling for tidal-dominated estuary reservoir in Ecuador |
| title_full_unstemmed | A case study of reservoir characterization and modeling for tidal-dominated estuary reservoir in Ecuador |
| title_short | A case study of reservoir characterization and modeling for tidal-dominated estuary reservoir in Ecuador |
| title_sort | case study of reservoir characterization and modeling for tidal dominated estuary reservoir in ecuador |
| url | https://doi.org/10.1038/s41598-025-03591-7 |
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