海拉尔盆地乌尔逊凹陷石油运移模式与成藏期

侯启军; 冯子辉; 霍秋立

Volume 29 Issue 4

Jul. 2004

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HOU Qi-jun, FENG Zi-hui, HUO Qiu-li, 2004. Oil Migration Model and Entrapment Epoch of North Wuerxun Depression in Hailaer Basin. Earth Science, 29(4): 397-403.

Citation:

HOU Qi-jun, FENG Zi-hui, HUO Qiu-li, 2004. Oil Migration Model and Entrapment Epoch of North Wuerxun Depression in Hailaer Basin. Earth Science, 29(4): 397-403.

HOU Qi-jun, FENG Zi-hui, HUO Qiu-li, 2004. Oil Migration Model and Entrapment Epoch of North Wuerxun Depression in Hailaer Basin. Earth Science, 29(4): 397-403.

Citation:

HOU Qi-jun, FENG Zi-hui, HUO Qiu-li, 2004. Oil Migration Model and Entrapment Epoch of North Wuerxun Depression in Hailaer Basin. Earth Science, 29(4): 397-403.

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Oil Migration Model and Entrapment Epoch of North Wuerxun Depression in Hailaer Basin

HOU Qi-jun^{1, 3
,},
FENG Zi-hui^{2, 3},
HUO Qiu-li³

1.
Changsha Institute ofGeotectonics, Chinese Academy ofSciences, Changsha 410013, China
2.
Department ofEarth Science, Jilin University, Changchun 130061, China
3.
Daqing Oilfield Company Ltd., Daqing 163712, China

Received Date: 2004-03-13
Publish Date: 2004-07-25

Abstract

Abstract

Based on the organic geochemical analysis of oils and source rock in Wuerxun depression, Hailaer basin, hydrocarbons are thought to be derived from the Nantun Formation in south Wuerxun depression and to enter the oil pools through lateral migration. Apparent migration pathways along the Surennuoer fault belt can be traced by means of absolute abundance of pyrrolic nitrogen compounds and biomarkers from the oil samples. The results indicate that the large fault is the dominant pathway in which the oil can migrates for a long distance, and fill easily into the traps near the fault. According to the migration effects of pyrrolic nitrogen compounds in the oils, the maximum migratation distance is estimated to be about 20 km. The analysis of K-Ar illite age, fluid inclusion and history of source rock expulsion indicates that there are three oil filling and entrapment events, the major oil entrapment epoch occurrs in the Late Yimin period about 100 Ma before the present. It can be also observed that the farther the pools away from the source kitchen are, the earlier the ages of oil filling are.
- Hailaer basin,
- Wuerxun depression,
- oil migration,
- entrapment epoch

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References(22)

References

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