Evaluation system and exploration optimization for fault-lithologic reservoir on the western slope of Xihu Sag, East China Sea Shelf Basin
With continued progress of exploration degree on the western slope of Xihu Sag of East China Sea Shelf Basin, exploration strategy has gradually changed from structural reservoirs to structural-lithological composite ones. Through the systematic evaluation of the hydrocarbon-generating potential of...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Petroleum Geology and Experiment
2022-09-01
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| Series: | Shiyou shiyan dizhi |
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| Online Access: | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202205747 |
| _version_ | 1797277333357330432 |
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| author | Liqing ZHOU Donghui JIANG Xinghai ZHOU Kun LI Jianjian ZHUANG Chuang LIU |
| author_facet | Liqing ZHOU Donghui JIANG Xinghai ZHOU Kun LI Jianjian ZHUANG Chuang LIU |
| author_sort | Liqing ZHOU |
| collection | DOAJ |
| description | With continued progress of exploration degree on the western slope of Xihu Sag of East China Sea Shelf Basin, exploration strategy has gradually changed from structural reservoirs to structural-lithological composite ones. Through the systematic evaluation of the hydrocarbon-generating potential of coal-measure source rocks, it was concluded that coal seams and carbonaceous mudstone are the main source rocks in this area. According to the study of sedimentary system based on the "Source-to-Sink" system, 8 types of structural-lithological composite trap were proposed. Furthermore, the accumulation conditions and distribution characteristics of oil and gas were studied, it is then confirmed that effectiveness of trap is the main controlling factor for oil-and-gas accumulation in the upper and middle members of Pinghu Formation, while the hydrocarbon-supplying capacity and physical properties of reservoir are the main controlling factor in the lower member of Pinghu Formation. Consequently, a comprehensive evaluation system was established. By the means of the comprehensive evaluation of structural-lithological composite reservoirs, the Eocene-Paleocene delta in Yingcuixuan area of the northern segment of the western slope belt, the Eocene tidal flat-delta in Pingnan, Chuyang and Baoshi areas, and the inner zone of Pinghu slope are large-scale reserve areas, which is valuable and favorable for further exploration. |
| first_indexed | 2024-03-07T15:47:08Z |
| format | Article |
| id | doaj.art-12f633e9c264435289fc748a2902da8b |
| institution | Directory Open Access Journal |
| issn | 1001-6112 |
| language | zho |
| last_indexed | 2024-03-07T15:47:08Z |
| publishDate | 2022-09-01 |
| publisher | Editorial Office of Petroleum Geology and Experiment |
| record_format | Article |
| series | Shiyou shiyan dizhi |
| spelling | doaj.art-12f633e9c264435289fc748a2902da8b2024-03-05T04:28:24ZzhoEditorial Office of Petroleum Geology and ExperimentShiyou shiyan dizhi1001-61122022-09-0144574775410.11781/sysydz202205747sysydz-44-5-747Evaluation system and exploration optimization for fault-lithologic reservoir on the western slope of Xihu Sag, East China Sea Shelf BasinLiqing ZHOU0Donghui JIANG1Xinghai ZHOU2Kun LI3Jianjian ZHUANG4Chuang LIU5SINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, ChinaSINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, ChinaSINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, ChinaSINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, ChinaSINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, ChinaSINOPEC Shanghai Offshore Oil & Gas Company, Shanghai 200120, ChinaWith continued progress of exploration degree on the western slope of Xihu Sag of East China Sea Shelf Basin, exploration strategy has gradually changed from structural reservoirs to structural-lithological composite ones. Through the systematic evaluation of the hydrocarbon-generating potential of coal-measure source rocks, it was concluded that coal seams and carbonaceous mudstone are the main source rocks in this area. According to the study of sedimentary system based on the "Source-to-Sink" system, 8 types of structural-lithological composite trap were proposed. Furthermore, the accumulation conditions and distribution characteristics of oil and gas were studied, it is then confirmed that effectiveness of trap is the main controlling factor for oil-and-gas accumulation in the upper and middle members of Pinghu Formation, while the hydrocarbon-supplying capacity and physical properties of reservoir are the main controlling factor in the lower member of Pinghu Formation. Consequently, a comprehensive evaluation system was established. By the means of the comprehensive evaluation of structural-lithological composite reservoirs, the Eocene-Paleocene delta in Yingcuixuan area of the northern segment of the western slope belt, the Eocene tidal flat-delta in Pingnan, Chuyang and Baoshi areas, and the inner zone of Pinghu slope are large-scale reserve areas, which is valuable and favorable for further exploration.https://www.sysydz.net/cn/article/doi/10.11781/sysydz202205747composite trapsand-controlling modelsmain controlling factorevaluation systemwestern slopexihu sageast china sea shelf basin |
| spellingShingle | Liqing ZHOU Donghui JIANG Xinghai ZHOU Kun LI Jianjian ZHUANG Chuang LIU Evaluation system and exploration optimization for fault-lithologic reservoir on the western slope of Xihu Sag, East China Sea Shelf Basin Shiyou shiyan dizhi composite trap sand-controlling models main controlling factor evaluation system western slope xihu sag east china sea shelf basin |
| title | Evaluation system and exploration optimization for fault-lithologic reservoir on the western slope of Xihu Sag, East China Sea Shelf Basin |
| title_full | Evaluation system and exploration optimization for fault-lithologic reservoir on the western slope of Xihu Sag, East China Sea Shelf Basin |
| title_fullStr | Evaluation system and exploration optimization for fault-lithologic reservoir on the western slope of Xihu Sag, East China Sea Shelf Basin |
| title_full_unstemmed | Evaluation system and exploration optimization for fault-lithologic reservoir on the western slope of Xihu Sag, East China Sea Shelf Basin |
| title_short | Evaluation system and exploration optimization for fault-lithologic reservoir on the western slope of Xihu Sag, East China Sea Shelf Basin |
| title_sort | evaluation system and exploration optimization for fault lithologic reservoir on the western slope of xihu sag east china sea shelf basin |
| topic | composite trap sand-controlling models main controlling factor evaluation system western slope xihu sag east china sea shelf basin |
| url | https://www.sysydz.net/cn/article/doi/10.11781/sysydz202205747 |
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