The influence of diagenesis on the quality of tight sandstone reservoirs in Longdong, Ordos Basin
Abstract The Longdong region is a recently discovered area for exploring natural gas in the Upper Paleozoic era within the Ordos Basin. The primary layer that produces gas in this area is the Shan1 member of the Permian Shanxi Formation. The research focused on analyzing the petrological characteris...
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SpringerOpen
2024-11-01
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| Series: | Journal of Petroleum Exploration and Production Technology |
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| Online Access: | https://doi.org/10.1007/s13202-024-01883-8 |
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| author | Gaixia Cui Shouyu Xu Qinlian Wei Yimeng Yang Jin Hu Tuoping He |
| author_facet | Gaixia Cui Shouyu Xu Qinlian Wei Yimeng Yang Jin Hu Tuoping He |
| author_sort | Gaixia Cui |
| collection | DOAJ |
| description | Abstract The Longdong region is a recently discovered area for exploring natural gas in the Upper Paleozoic era within the Ordos Basin. The primary layer that produces gas in this area is the Shan1 member of the Permian Shanxi Formation. The research focused on analyzing the petrological characteristics, physical properties, pore structure, and diagenesis characteristics of the reservoir in the 13th member of the Permian Shanxi Formation in the Longdong area of the southwest Ordos Basin. The research was conducted by combining core observation, cast-thin members, physical properties, and other relevant data. Additionally, the study also discussed the primary factors that influence reservoir performance. The analysis indicates that the dominant sandstone types found in the 13th member of the mountain reservoir are primarily quartz sandstone and lithic quartz sandstone. These sandstone types originate from high-energy environments and are located far from the source. The predominant types of pores are intragranular pores and cutting-karst pores, with the pore size primarily falling within the microporous to mesoporous range. The sedimentary facies and diagenesis exert control over the physical qualities of the reservoir. Specifically, the sedimentary facies determines the fundamental physical conditions of the reservoir, while the structure of the sand body significantly influences its physical properties. Compaction is the primary cause of the increased density of the layer's physical properties. The presence of illite is the main factor contributing to the densification of the reservoir through cementation. The limited extent of reservoir dissolution has a minor effect on enhancing reservoir quality. |
| format | Article |
| id | doaj-art-0f71fb2e8d8e4d51bf1dc27f8c0d73e7 |
| institution | Kabale University |
| issn | 2190-0558 2190-0566 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | SpringerOpen |
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| series | Journal of Petroleum Exploration and Production Technology |
| spelling | doaj-art-0f71fb2e8d8e4d51bf1dc27f8c0d73e72025-01-05T12:09:17ZengSpringerOpenJournal of Petroleum Exploration and Production Technology2190-05582190-05662024-11-0114123331334810.1007/s13202-024-01883-8The influence of diagenesis on the quality of tight sandstone reservoirs in Longdong, Ordos BasinGaixia Cui0Shouyu Xu1Qinlian Wei2Yimeng Yang3Jin Hu4Tuoping He5School of Earth Science and Technology, China University of Petroleum (East China)School of Earth Science and Technology, China University of Petroleum (East China)School of Earth Science and Engineering, Xi’an Shiyou UniversitySchool of Earth Science and Technology, China University of Petroleum (East China)School of Earth Science and Technology, China University of Petroleum (East China)School of Earth Science and Technology, China University of Petroleum (East China)Abstract The Longdong region is a recently discovered area for exploring natural gas in the Upper Paleozoic era within the Ordos Basin. The primary layer that produces gas in this area is the Shan1 member of the Permian Shanxi Formation. The research focused on analyzing the petrological characteristics, physical properties, pore structure, and diagenesis characteristics of the reservoir in the 13th member of the Permian Shanxi Formation in the Longdong area of the southwest Ordos Basin. The research was conducted by combining core observation, cast-thin members, physical properties, and other relevant data. Additionally, the study also discussed the primary factors that influence reservoir performance. The analysis indicates that the dominant sandstone types found in the 13th member of the mountain reservoir are primarily quartz sandstone and lithic quartz sandstone. These sandstone types originate from high-energy environments and are located far from the source. The predominant types of pores are intragranular pores and cutting-karst pores, with the pore size primarily falling within the microporous to mesoporous range. The sedimentary facies and diagenesis exert control over the physical qualities of the reservoir. Specifically, the sedimentary facies determines the fundamental physical conditions of the reservoir, while the structure of the sand body significantly influences its physical properties. Compaction is the primary cause of the increased density of the layer's physical properties. The presence of illite is the main factor contributing to the densification of the reservoir through cementation. The limited extent of reservoir dissolution has a minor effect on enhancing reservoir quality.https://doi.org/10.1007/s13202-024-01883-8Tight sandstoneDiagenesisShanxi formationShan 13 memberOrdos basin |
| spellingShingle | Gaixia Cui Shouyu Xu Qinlian Wei Yimeng Yang Jin Hu Tuoping He The influence of diagenesis on the quality of tight sandstone reservoirs in Longdong, Ordos Basin Journal of Petroleum Exploration and Production Technology Tight sandstone Diagenesis Shanxi formation Shan 13 member Ordos basin |
| title | The influence of diagenesis on the quality of tight sandstone reservoirs in Longdong, Ordos Basin |
| title_full | The influence of diagenesis on the quality of tight sandstone reservoirs in Longdong, Ordos Basin |
| title_fullStr | The influence of diagenesis on the quality of tight sandstone reservoirs in Longdong, Ordos Basin |
| title_full_unstemmed | The influence of diagenesis on the quality of tight sandstone reservoirs in Longdong, Ordos Basin |
| title_short | The influence of diagenesis on the quality of tight sandstone reservoirs in Longdong, Ordos Basin |
| title_sort | influence of diagenesis on the quality of tight sandstone reservoirs in longdong ordos basin |
| topic | Tight sandstone Diagenesis Shanxi formation Shan 13 member Ordos basin |
| url | https://doi.org/10.1007/s13202-024-01883-8 |
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