陆相断陷盆地层序类型与隐蔽油气藏勘探——以南堡凹陷古近系为例

冯有良; 周海民; 李思田; 刘蕴华; 董月霞; 曹中宏

Volume 29 Issue 5

Sep. 2004

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Article Navigation > Earth Science > 2004 > 29(5): 603-608

FENG You-liang, ZHOU Hai-min, LI Si-tian, LIU Yun-hua, DONG Yue-xia, CAO Zhong-hong, 2004. Sequence Types and Subtle Trap Exploration in Continental Rift Basin: A Case Study of Lower Tertiary of the Nanpu Depression. Earth Science, 29(5): 603-608.

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Sequence Types and Subtle Trap Exploration in Continental Rift Basin: A Case Study of Lower Tertiary of the Nanpu Depression

1.
Petroleum Exploration and Development Research Institute, PetroChina, Beijing 100083, China
2.
Jidong Petroleum Exploration and Development Research Institute, PetroChina, Tangshan 063004, China
3.
Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China

Received Date: 2004-05-12
Publish Date: 2004-09-25

Abstract

Abstract

Based on integrated analysis of high-resolution 3D seismic sections, log curves and abundant geological data, basin filling sequence in the Lower Tertiary Nanpu depression consists of one super sequence set, four super sequences, and eleven third-order sequences. The North Liuzhan fan delta system can be divided further into six fourth-order sequences. Two kinds of slope-breaks are developed in this basin, one is the syndepositional fault slope-break, the other is the syndepositional bend slope-break, which control clearly sequence types and stratigraphic models. Corresponding two kinds of sequence patterns are observed in Lower Tertiary Nanpu depression, that are the syndepositional fault slope-break and syndepositional bend slope-break sequences. The lowstand sand bodies and highstand sand bodiesin the both sequences are favorable for hydrocarbon accumulation, and can be identified on seismic section easily, hence, they are taken as main targets for subtle trap exploration.
- syndepositional fault,
- syndepositional bend,
- slope-break sequence,
- lowstand sand body,
- highstand sand body,
- subtle trap reservoir exploration,
- Lower Tertiary system,
- Nanpu depression

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References

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Sequence Types and Subtle Trap Exploration in Continental Rift Basin: A Case Study of Lower Tertiary of the Nanpu Depression

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