{"title":"埃塞俄比亚青尼罗河(阿贝)盆地上部砂岩的岩相、地层学和产状研究:对储层面分布的见解","authors":"Fetene Tariku, Solomon Kassa, Samuel Getnet","doi":"10.1007/s12517-024-11961-0","DOIUrl":null,"url":null,"abstract":"<p>The Blue Nile Basin is one of the frontier basins in Ethiopia, where there is very limited sub-surface data to understand the petroleum system of the basin. In frontier basins, only comparative analogs can be used for reservoir studies. The main purpose of the study is to elucidate the importance of facies, stratigraphic, and provenance study to comprehend the nature of the reservoir rock in the Blue Nile Basin. The study reveals the presence of eight lithofacies in the study area. The textural, structural, and compositional data and the general fining-upward sequence of the upper sandstone attest fluvial deposition by braided river system. The presence of the dominant medium-grained quartz arenite with moderate cementation (diagenesis) effect in the upper sandstone is an indication for the existence of good reservoir rock in the basin. The upper sandstone is relatively thinner in the study area, average 75 m, compared to the central part of the basin, average 220 m, and this depicts the geometry of the upper sandstone which pinches out to the north of the basin. Comparison of provenance and cement types of the upper sandstone in the study area and central part of the basin revealed the existence of similar nature of reservoir rock in the basin.</p>","PeriodicalId":476,"journal":{"name":"Arabian Journal of Geosciences","volume":null,"pages":null},"PeriodicalIF":1.8270,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Lithofacies, stratigraphy, and provenance study of upper sandstone, Blue Nile (Abay) Basin, Ethiopia: insight to the distribution of reservoir facies\",\"authors\":\"Fetene Tariku, Solomon Kassa, Samuel Getnet\",\"doi\":\"10.1007/s12517-024-11961-0\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The Blue Nile Basin is one of the frontier basins in Ethiopia, where there is very limited sub-surface data to understand the petroleum system of the basin. In frontier basins, only comparative analogs can be used for reservoir studies. The main purpose of the study is to elucidate the importance of facies, stratigraphic, and provenance study to comprehend the nature of the reservoir rock in the Blue Nile Basin. The study reveals the presence of eight lithofacies in the study area. The textural, structural, and compositional data and the general fining-upward sequence of the upper sandstone attest fluvial deposition by braided river system. The presence of the dominant medium-grained quartz arenite with moderate cementation (diagenesis) effect in the upper sandstone is an indication for the existence of good reservoir rock in the basin. The upper sandstone is relatively thinner in the study area, average 75 m, compared to the central part of the basin, average 220 m, and this depicts the geometry of the upper sandstone which pinches out to the north of the basin. Comparison of provenance and cement types of the upper sandstone in the study area and central part of the basin revealed the existence of similar nature of reservoir rock in the basin.</p>\",\"PeriodicalId\":476,\"journal\":{\"name\":\"Arabian Journal of Geosciences\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.8270,\"publicationDate\":\"2024-04-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Arabian Journal of Geosciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1007/s12517-024-11961-0\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"Earth and Planetary Sciences\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Arabian Journal of Geosciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1007/s12517-024-11961-0","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Earth and Planetary Sciences","Score":null,"Total":0}
Lithofacies, stratigraphy, and provenance study of upper sandstone, Blue Nile (Abay) Basin, Ethiopia: insight to the distribution of reservoir facies
The Blue Nile Basin is one of the frontier basins in Ethiopia, where there is very limited sub-surface data to understand the petroleum system of the basin. In frontier basins, only comparative analogs can be used for reservoir studies. The main purpose of the study is to elucidate the importance of facies, stratigraphic, and provenance study to comprehend the nature of the reservoir rock in the Blue Nile Basin. The study reveals the presence of eight lithofacies in the study area. The textural, structural, and compositional data and the general fining-upward sequence of the upper sandstone attest fluvial deposition by braided river system. The presence of the dominant medium-grained quartz arenite with moderate cementation (diagenesis) effect in the upper sandstone is an indication for the existence of good reservoir rock in the basin. The upper sandstone is relatively thinner in the study area, average 75 m, compared to the central part of the basin, average 220 m, and this depicts the geometry of the upper sandstone which pinches out to the north of the basin. Comparison of provenance and cement types of the upper sandstone in the study area and central part of the basin revealed the existence of similar nature of reservoir rock in the basin.
期刊介绍:
The Arabian Journal of Geosciences is the official journal of the Saudi Society for Geosciences and publishes peer-reviewed original and review articles on the entire range of Earth Science themes, focused on, but not limited to, those that have regional significance to the Middle East and the Euro-Mediterranean Zone.
Key topics therefore include; geology, hydrogeology, earth system science, petroleum sciences, geophysics, seismology and crustal structures, tectonics, sedimentology, palaeontology, metamorphic and igneous petrology, natural hazards, environmental sciences and sustainable development, geoarchaeology, geomorphology, paleo-environment studies, oceanography, atmospheric sciences, GIS and remote sensing, geodesy, mineralogy, volcanology, geochemistry and metallogenesis.