Features and favorable exploration direction of normal faults in Jurassic strata in northern central Sichuan Basin, China
Studies focusing on the fault system in the Jurassic strata of the Sichuan Basin have been limited, restricting the understanding of the hydrocarbon accumulation mode of the Shaximiao Formation and the expansion of exploration. Through interpretation and coherent slice analysis of extensive seismic...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-12-01
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| Series: | Journal of Natural Gas Geoscience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468256X23000676 |
| _version_ | 1797422610638700544 |
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| author | Nan Su Zhuxin Chen Wei Yang Lining Wang Wenzheng Li Chunlong Yang Rong Li Lu Zhang Xueying Ma Hao Zhang |
| author_facet | Nan Su Zhuxin Chen Wei Yang Lining Wang Wenzheng Li Chunlong Yang Rong Li Lu Zhang Xueying Ma Hao Zhang |
| author_sort | Nan Su |
| collection | DOAJ |
| description | Studies focusing on the fault system in the Jurassic strata of the Sichuan Basin have been limited, restricting the understanding of the hydrocarbon accumulation mode of the Shaximiao Formation and the expansion of exploration. Through interpretation and coherent slice analysis of extensive seismic data, we have newly discovered that normal faults are widely developed in the northern central Sichuan Basin in the Jurassic strata. These faults mainly extend from the Lower to Upper Jurassic strata and are characterized by the continuous arrangement of NEE-trending small faults in the plane, with a few NNE-trending and NNW-trending faults also present. The distribution of Jurassic fault combinations varies within the basin, with normal faults mainly distributed in the low uplift areas of central Sichuan and the north of central Sichuan. Geochemical data comparisons indicate that these normal faults serve as conduits between the Jurassic source rocks and the Shaximiao Formation reservoir in these areas. Furthermore, the newly discovered normal faults are superimposed with the middle and lower Jurassic source rocks in the northern central Sichuan Basin, suggesting the formation of a new hydrocarbon accumulation model involving hydrocarbon generation from the middle and lower Jurassic, facilitated by communication through normal faults. Notably, one of the promising directions for exploration lies in the multi-stage channel superimposed development zone near these normal faults. |
| first_indexed | 2024-03-09T07:34:48Z |
| format | Article |
| id | doaj.art-fde28a43790b4f988d98c6c47fd105db |
| institution | Directory Open Access Journal |
| issn | 2468-256X |
| language | English |
| last_indexed | 2024-03-09T07:34:48Z |
| publishDate | 2023-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Natural Gas Geoscience |
| spelling | doaj.art-fde28a43790b4f988d98c6c47fd105db2023-12-03T05:42:23ZengKeAi Communications Co., Ltd.Journal of Natural Gas Geoscience2468-256X2023-12-0186413426Features and favorable exploration direction of normal faults in Jurassic strata in northern central Sichuan Basin, ChinaNan Su0Zhuxin Chen1Wei Yang2Lining Wang3Wenzheng Li4Chunlong Yang5Rong Li6Lu Zhang7Xueying Ma8Hao Zhang9Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, China; Key Laboratory of Basin Structure & Hydrocarbon Accumulation, CNPC, Beijing, 100083, China; Corresponding author. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, China.Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, China; Key Laboratory of Basin Structure & Hydrocarbon Accumulation, CNPC, Beijing, 100083, ChinaResearch Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, ChinaResearch Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, China; Key Laboratory of Basin Structure & Hydrocarbon Accumulation, CNPC, Beijing, 100083, ChinaChengdu University of Technology, Chengdu, 610051, China; Hangzhou Research Institute of Petroleum Geology, PetroChina, Hangzhou, 310023, China; Corresponding author. Chengdu University of Technology, Chengdu, 610051, China.Research Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, ChinaResearch Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, ChinaResearch Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, ChinaResearch Institute of Petroleum Exploration & Development, PetroChina, Beijing, 100083, ChinaHangzhou Research Institute of Petroleum Geology, PetroChina, Hangzhou, 310023, ChinaStudies focusing on the fault system in the Jurassic strata of the Sichuan Basin have been limited, restricting the understanding of the hydrocarbon accumulation mode of the Shaximiao Formation and the expansion of exploration. Through interpretation and coherent slice analysis of extensive seismic data, we have newly discovered that normal faults are widely developed in the northern central Sichuan Basin in the Jurassic strata. These faults mainly extend from the Lower to Upper Jurassic strata and are characterized by the continuous arrangement of NEE-trending small faults in the plane, with a few NNE-trending and NNW-trending faults also present. The distribution of Jurassic fault combinations varies within the basin, with normal faults mainly distributed in the low uplift areas of central Sichuan and the north of central Sichuan. Geochemical data comparisons indicate that these normal faults serve as conduits between the Jurassic source rocks and the Shaximiao Formation reservoir in these areas. Furthermore, the newly discovered normal faults are superimposed with the middle and lower Jurassic source rocks in the northern central Sichuan Basin, suggesting the formation of a new hydrocarbon accumulation model involving hydrocarbon generation from the middle and lower Jurassic, facilitated by communication through normal faults. Notably, one of the promising directions for exploration lies in the multi-stage channel superimposed development zone near these normal faults.http://www.sciencedirect.com/science/article/pii/S2468256X23000676Normal faultsDifferential distributionShaximiao FormationHydrocarbon accumulation modeSichuan Basin |
| spellingShingle | Nan Su Zhuxin Chen Wei Yang Lining Wang Wenzheng Li Chunlong Yang Rong Li Lu Zhang Xueying Ma Hao Zhang Features and favorable exploration direction of normal faults in Jurassic strata in northern central Sichuan Basin, China Journal of Natural Gas Geoscience Normal faults Differential distribution Shaximiao Formation Hydrocarbon accumulation mode Sichuan Basin |
| title | Features and favorable exploration direction of normal faults in Jurassic strata in northern central Sichuan Basin, China |
| title_full | Features and favorable exploration direction of normal faults in Jurassic strata in northern central Sichuan Basin, China |
| title_fullStr | Features and favorable exploration direction of normal faults in Jurassic strata in northern central Sichuan Basin, China |
| title_full_unstemmed | Features and favorable exploration direction of normal faults in Jurassic strata in northern central Sichuan Basin, China |
| title_short | Features and favorable exploration direction of normal faults in Jurassic strata in northern central Sichuan Basin, China |
| title_sort | features and favorable exploration direction of normal faults in jurassic strata in northern central sichuan basin china |
| topic | Normal faults Differential distribution Shaximiao Formation Hydrocarbon accumulation mode Sichuan Basin |
| url | http://www.sciencedirect.com/science/article/pii/S2468256X23000676 |
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