Study on the structural characteristics of the Yangdachengzi oil layer in the Quantou Formation, ZY block, central depression, Songliao Basin
The Songliao Basin is a large Mesozoic–Cenozoic continental basin with multiple sedimentary cycles. It has experienced the influence of multidirectional and different structural stresses in the peripheral structural belt, resulting in a complex geological structure. The continental clastic deposits...
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Frontiers Media S.A.
2023-08-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1132837/full |
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| author | Chunyu He Yani Lin Yani Lin Tianze Zhang Tianze Zhang Jisheng Ma Yunfei Li Jiaju Cheng Yinde Zhang |
| author_facet | Chunyu He Yani Lin Yani Lin Tianze Zhang Tianze Zhang Jisheng Ma Yunfei Li Jiaju Cheng Yinde Zhang |
| author_sort | Chunyu He |
| collection | DOAJ |
| description | The Songliao Basin is a large Mesozoic–Cenozoic continental basin with multiple sedimentary cycles. It has experienced the influence of multidirectional and different structural stresses in the peripheral structural belt, resulting in a complex geological structure. The continental clastic deposits at the depression of the Quantou Formation in the shallow part of the basin, including the Fuyu oil layer and the Yangdachengzi oil layer, are the primary exploration and development target. The structure and faults are the dominant factors controlling the hydrocarbon accumulation in the upper member of the Quantou Formation in the central Songliao Basin. In this study, we finely interpret the three-dimensional structure of the third member of Quantou Formation in the ZY block by the integration of well logging and seismic data and then analyze the stratigraphic distribution and fracture characteristic and the tectonic development history of the Yangdachengzi oil layer. The results show that the Yangdachengzi oil layer is a monoclinic structure from the southeast to northwest. It has four third-level structural units, the Mofantun nose structure, Yumin nose structure, Zhaoyuan nose structure, and Zhaoyuan western nose structure, which form the structure-lithostratigraphic trap zones in the study area, in which a total of 80 traps for the Yangdachengzi oil layer has been identified with the total area of about 58.06 km2. Faults are highly developed in the central depression of the Songliao Basin. The ZY block is dominated by the extensional-strike-slip faults. The main fault direction is mostly north–northeast, and the secondary fault direction is mostly north–northwest. The complex tectonic activities determine the formation mechanism and the evolution of faults. The faults in this block can be classified as early-stage, middle-stage, late-stage, and long-term faults. The long-term fault is the major fault type of the five fault bundles, and it acts as the main channel for oil and gas migration. In addition, the reservoir is an above-generation and below-storage model. This study provides evidence for the hydrocarbon accumulation model of the Quantou Formation. |
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| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-12T18:01:41Z |
| publishDate | 2023-08-01 |
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| spelling | doaj.art-aa54ee226c1e414f9836c2c57ddef9e32023-08-02T09:47:23ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-08-011110.3389/feart.2023.11328371132837Study on the structural characteristics of the Yangdachengzi oil layer in the Quantou Formation, ZY block, central depression, Songliao BasinChunyu He0Yani Lin1Yani Lin2Tianze Zhang3Tianze Zhang4Jisheng Ma5Yunfei Li6Jiaju Cheng7Yinde Zhang8College of Energy, Chengdu University of Technology, Chengdu, ChinaCollege of Energy, Chengdu University of Technology, Chengdu, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, ChinaCollege of Energy, Chengdu University of Technology, Chengdu, ChinaResearch Institute of Petroleum Exploration and Development, Beijing, ChinaOil Production Company of Daqing Oilfield Company Ltd., Daqing, ChinaCollege of Energy, Chengdu University of Technology, Chengdu, ChinaCollege of Energy, Chengdu University of Technology, Chengdu, ChinaCollege of Energy, Chengdu University of Technology, Chengdu, ChinaThe Songliao Basin is a large Mesozoic–Cenozoic continental basin with multiple sedimentary cycles. It has experienced the influence of multidirectional and different structural stresses in the peripheral structural belt, resulting in a complex geological structure. The continental clastic deposits at the depression of the Quantou Formation in the shallow part of the basin, including the Fuyu oil layer and the Yangdachengzi oil layer, are the primary exploration and development target. The structure and faults are the dominant factors controlling the hydrocarbon accumulation in the upper member of the Quantou Formation in the central Songliao Basin. In this study, we finely interpret the three-dimensional structure of the third member of Quantou Formation in the ZY block by the integration of well logging and seismic data and then analyze the stratigraphic distribution and fracture characteristic and the tectonic development history of the Yangdachengzi oil layer. The results show that the Yangdachengzi oil layer is a monoclinic structure from the southeast to northwest. It has four third-level structural units, the Mofantun nose structure, Yumin nose structure, Zhaoyuan nose structure, and Zhaoyuan western nose structure, which form the structure-lithostratigraphic trap zones in the study area, in which a total of 80 traps for the Yangdachengzi oil layer has been identified with the total area of about 58.06 km2. Faults are highly developed in the central depression of the Songliao Basin. The ZY block is dominated by the extensional-strike-slip faults. The main fault direction is mostly north–northeast, and the secondary fault direction is mostly north–northwest. The complex tectonic activities determine the formation mechanism and the evolution of faults. The faults in this block can be classified as early-stage, middle-stage, late-stage, and long-term faults. The long-term fault is the major fault type of the five fault bundles, and it acts as the main channel for oil and gas migration. In addition, the reservoir is an above-generation and below-storage model. This study provides evidence for the hydrocarbon accumulation model of the Quantou Formation.https://www.frontiersin.org/articles/10.3389/feart.2023.1132837/fullSongliao BasinQuantou Formationfault characteristicsYangdachengzi oil layerstructure-lithostratigraphic trap |
| spellingShingle | Chunyu He Yani Lin Yani Lin Tianze Zhang Tianze Zhang Jisheng Ma Yunfei Li Jiaju Cheng Yinde Zhang Study on the structural characteristics of the Yangdachengzi oil layer in the Quantou Formation, ZY block, central depression, Songliao Basin Frontiers in Earth Science Songliao Basin Quantou Formation fault characteristics Yangdachengzi oil layer structure-lithostratigraphic trap |
| title | Study on the structural characteristics of the Yangdachengzi oil layer in the Quantou Formation, ZY block, central depression, Songliao Basin |
| title_full | Study on the structural characteristics of the Yangdachengzi oil layer in the Quantou Formation, ZY block, central depression, Songliao Basin |
| title_fullStr | Study on the structural characteristics of the Yangdachengzi oil layer in the Quantou Formation, ZY block, central depression, Songliao Basin |
| title_full_unstemmed | Study on the structural characteristics of the Yangdachengzi oil layer in the Quantou Formation, ZY block, central depression, Songliao Basin |
| title_short | Study on the structural characteristics of the Yangdachengzi oil layer in the Quantou Formation, ZY block, central depression, Songliao Basin |
| title_sort | study on the structural characteristics of the yangdachengzi oil layer in the quantou formation zy block central depression songliao basin |
| topic | Songliao Basin Quantou Formation fault characteristics Yangdachengzi oil layer structure-lithostratigraphic trap |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1132837/full |
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