Oil source correlation and its relationship with deeply buried hydrocarbon accumulations in Tianjingshan Paleo-uplift area, northern segment of Western Sichuan Depression
The Tianjingshan Paleo-uplift (TJS PU) area in the northern segment of Western Sichuan Depression (NSWSCD) has abundant oil and gas shows. The traceability of paleo-oil reservoirs and their destruction are of great significance to the study of the characteristics and mechanism of deep hydrocarbon ac...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Petroleum Geology and Experiment
2021-01-01
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| Series: | Shiyou shiyan dizhi |
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| Online Access: | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202101096 |
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| author | Xiao LIANG Liangliang WU Yading LI Jing LI Xinyan FANG Boyu PU Hua WANG Shugen LIU |
| author_facet | Xiao LIANG Liangliang WU Yading LI Jing LI Xinyan FANG Boyu PU Hua WANG Shugen LIU |
| author_sort | Xiao LIANG |
| collection | DOAJ |
| description | The Tianjingshan Paleo-uplift (TJS PU) area in the northern segment of Western Sichuan Depression (NSWSCD) has abundant oil and gas shows. The traceability of paleo-oil reservoirs and their destruction are of great significance to the study of the characteristics and mechanism of deep hydrocarbon accumulations. This study focuses on the tectonic evolution of Mianyang-Changning Intracratonic Sag (MY-CN IS) and TJS PU. The Cambrian-Ordovician tectonic movement was significant in the NSWSCD, as indicated by the formation of the TJS PU. From tension to compression tectonic-sedimentary evolution, the TJS PU is an important node in the Early Paleozoic. The analysis of deep marine hydrocarbon geological characteristics in the NSWSCD shows that the Lower Cambrian Maidiping-Qiongzhusi formations are the best source rock. Reservoir bitumen in the Dengying Fm is used as a template to identify organic geochemical parameters of paleo-oil reservoir systems with different layers and different phases in the TJS PU area. Organic carbon isotope and biomarker compounds indicate that the main source of paleo oil reservoirs is the Lower Cambrian organic-rich black shale, and the concept of "Tianjingshan Paleo-uplift paleo-reservoir system" is finally established. According to the corresponding classification of source-reservoir-caprock combination, oil source identification and tectonic evolution period study, it is once again confirmed that the deep marine oil and gas multi-phase and diverse accumulation process under the complex structural background of the northern segment of the Western Sichuan Depression can be divided into "primary oil reservoir-primary gas reservoir" and "secondary oil reservoir-primary gas reservoir" types. |
| first_indexed | 2024-03-07T15:44:28Z |
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| institution | Directory Open Access Journal |
| issn | 1001-6112 |
| language | zho |
| last_indexed | 2024-03-07T15:44:28Z |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Petroleum Geology and Experiment |
| record_format | Article |
| series | Shiyou shiyan dizhi |
| spelling | doaj.art-62e6b94b01d64192af692681e31c49482024-03-05T04:40:40ZzhoEditorial Office of Petroleum Geology and ExperimentShiyou shiyan dizhi1001-61122021-01-014319611110.11781/sysydz202101096sysydz-43-1-96Oil source correlation and its relationship with deeply buried hydrocarbon accumulations in Tianjingshan Paleo-uplift area, northern segment of Western Sichuan DepressionXiao LIANG0Liangliang WU1Yading LI2Jing LI3Xinyan FANG4Boyu PU5Hua WANG6Shugen LIU7State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, ChinaState Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou, Guangdong 510640, ChinaExploration and Development Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu, Sichuan 610041, ChinaInstitute of Geological Exploration and Development of CNPC Chuanqing Drilling Engineering, Chengdu, Sichuan 610051, ChinaState Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou, Guangdong 510640, ChinaExploration and Development Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu, Sichuan 610041, ChinaExploration and Development Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu, Sichuan 610041, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, ChinaThe Tianjingshan Paleo-uplift (TJS PU) area in the northern segment of Western Sichuan Depression (NSWSCD) has abundant oil and gas shows. The traceability of paleo-oil reservoirs and their destruction are of great significance to the study of the characteristics and mechanism of deep hydrocarbon accumulations. This study focuses on the tectonic evolution of Mianyang-Changning Intracratonic Sag (MY-CN IS) and TJS PU. The Cambrian-Ordovician tectonic movement was significant in the NSWSCD, as indicated by the formation of the TJS PU. From tension to compression tectonic-sedimentary evolution, the TJS PU is an important node in the Early Paleozoic. The analysis of deep marine hydrocarbon geological characteristics in the NSWSCD shows that the Lower Cambrian Maidiping-Qiongzhusi formations are the best source rock. Reservoir bitumen in the Dengying Fm is used as a template to identify organic geochemical parameters of paleo-oil reservoir systems with different layers and different phases in the TJS PU area. Organic carbon isotope and biomarker compounds indicate that the main source of paleo oil reservoirs is the Lower Cambrian organic-rich black shale, and the concept of "Tianjingshan Paleo-uplift paleo-reservoir system" is finally established. According to the corresponding classification of source-reservoir-caprock combination, oil source identification and tectonic evolution period study, it is once again confirmed that the deep marine oil and gas multi-phase and diverse accumulation process under the complex structural background of the northern segment of the Western Sichuan Depression can be divided into "primary oil reservoir-primary gas reservoir" and "secondary oil reservoir-primary gas reservoir" types.https://www.sysydz.net/cn/article/doi/10.11781/sysydz202101096oil source correlationpaleo-oil reservoir systemdeep-buried hydrocarbon accumulationtianjingshan paleo-upliftnorthern segment of western sichuan depressionsichuan basin |
| spellingShingle | Xiao LIANG Liangliang WU Yading LI Jing LI Xinyan FANG Boyu PU Hua WANG Shugen LIU Oil source correlation and its relationship with deeply buried hydrocarbon accumulations in Tianjingshan Paleo-uplift area, northern segment of Western Sichuan Depression Shiyou shiyan dizhi oil source correlation paleo-oil reservoir system deep-buried hydrocarbon accumulation tianjingshan paleo-uplift northern segment of western sichuan depression sichuan basin |
| title | Oil source correlation and its relationship with deeply buried hydrocarbon accumulations in Tianjingshan Paleo-uplift area, northern segment of Western Sichuan Depression |
| title_full | Oil source correlation and its relationship with deeply buried hydrocarbon accumulations in Tianjingshan Paleo-uplift area, northern segment of Western Sichuan Depression |
| title_fullStr | Oil source correlation and its relationship with deeply buried hydrocarbon accumulations in Tianjingshan Paleo-uplift area, northern segment of Western Sichuan Depression |
| title_full_unstemmed | Oil source correlation and its relationship with deeply buried hydrocarbon accumulations in Tianjingshan Paleo-uplift area, northern segment of Western Sichuan Depression |
| title_short | Oil source correlation and its relationship with deeply buried hydrocarbon accumulations in Tianjingshan Paleo-uplift area, northern segment of Western Sichuan Depression |
| title_sort | oil source correlation and its relationship with deeply buried hydrocarbon accumulations in tianjingshan paleo uplift area northern segment of western sichuan depression |
| topic | oil source correlation paleo-oil reservoir system deep-buried hydrocarbon accumulation tianjingshan paleo-uplift northern segment of western sichuan depression sichuan basin |
| url | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202101096 |
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