Petroleum -entrapped System AndAccumulation in the Wenjisang- Qiudong Area, Tuha Basin
- Received Date: 1996-09-24
- Publish Date: 1997-12-10
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Key words:
- fluid potential /
- petroleum-entrapped system /
- oil ＆ gas accumulation /
- Wenjisang- Qi-udong area /
Abstract: Based on such dynamic geologic functions as structure, thermal history, fluid potential developmentand the migration and accumulation of oil＆ gas, the pool-formed evolutional history was discussed andfurthermore divided into two petroleum-entrapped systems in the Wenjisang-Qiudong area.The firstpetroleum- entrapped system is from the Early and Middle Jurassic to the end of Paleogene,in which theactive period of the pool-formation is from the end of Jurassic to the Early Cretaceous, and the second isfrom Neogene to Quaternary, in which the active period is since the end of Neogene.According to thedevolopment of the fuild potential field, the relationship between the petroleum-entrapped evolution andthe hydrocarbon accumulation was analized.Furthermore, the petroleum-entrapped models were stud-ied, and it was suggested that the Wenjisang oil- pool was holded in the first petroleum-entrapped sys-tem, mainly with oil, and that the oil and gas were shared the importance in the Miden field, and thatthe Qiudong field was formed in the second petroleum-entrapped system as a gas pool.
| Citation: | Feng Qiao, Zhang Xiaoli, Yuan Mingsheng, Wang Wuhe, Zhang Shihuan. Petroleum -entrapped System AndAccumulation in the Wenjisang- Qiudong Area, Tuha Basin[J]. Acta Sedimentologica Sinica, 1997, 15(4): 121-126.
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