南海北部白云凹陷继承性陆缘背景古潜山成因及类型

刘军; 彭光荣; 张丽丽; 李洪博; 汪旭东; 吴哲; 官伟; 梁超; 黄雷

doi:10.3799/dqkx.2023.187

Volume 50 Issue 2

Feb. 2025

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Article Navigation > Earth Science > 2025 > 50(2): 405-418

Liu Jun, Peng Guangrong, Zhang Lili, Li Hongbo, Wang Xudong, Wu Zhe, Guan Wei, Liang Chao, Huang Lei, 2025. Genesis and Types of Buried Hills in the Tectonic Setting of the Inheriting Continental Margin in Baiyun Sag, Northern South China Sea. Earth Science, 50(2): 405-418. doi: 10.3799/dqkx.2023.187

Citation:

Liu Jun, Peng Guangrong, Zhang Lili, Li Hongbo, Wang Xudong, Wu Zhe, Guan Wei, Liang Chao, Huang Lei, 2025. Genesis and Types of Buried Hills in the Tectonic Setting of the Inheriting Continental Margin in Baiyun Sag, Northern South China Sea. Earth Science, 50(2): 405-418. doi: 10.3799/dqkx.2023.187

Citation:

Liu Jun, Peng Guangrong, Zhang Lili, Li Hongbo, Wang Xudong, Wu Zhe, Guan Wei, Liang Chao, Huang Lei, 2025. Genesis and Types of Buried Hills in the Tectonic Setting of the Inheriting Continental Margin in Baiyun Sag, Northern South China Sea. Earth Science, 50(2): 405-418. doi: 10.3799/dqkx.2023.187

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Genesis and Types of Buried Hills in the Tectonic Setting of the Inheriting Continental Margin in Baiyun Sag, Northern South China Sea

doi: 10.3799/dqkx.2023.187

Liu Jun^{1, 2
,},
Peng Guangrong^{1, 2},
Zhang Lili^{1, 2},
Li Hongbo^{1, 2},
Wang Xudong^{1, 2},
Wu Zhe^{1, 2},
Guan Wei³,
Liang Chao³,
Huang Lei^{3
,
,
,}

1.
Shenzhen Branch of CNOOC Ltd., Shenzhen 518054, China
2.
China National Offshore Oil Corporation Deepwater Development Ltd., Shenzhen 518000, China
3.
Institute of Oil and Gas Basin, Northwest University, Xi`an 710069, China

Received Date: 2023-11-15
Available Online: 2025-02-26
Publish Date: 2025-02-25

Abstract

Abstract

The buried hill in the Baiyun Sag is one of the deep-water oils and gas exploration fields in the Pearl River Mouth Basin in the northern South China Sea. However, research on the origin and classification of buried hills is relatively weak, which restricts the evaluation of the oil and gas exploration potential of buried hills. Structural analysis of buried hills in the Baiyun Sag from the perspective of inherited continental margin tectonic background using large-scale 3D seismic data. Mesozoic preexisting structures, Cenozoic detachment fault systems and multiple phases of magmatism, and strike-slip fault systems are identified. The buried hill in the Baiyun Sag is affected by three main controlling factors: pre-existing basement structure, detachment fault and late magmatic transformation. The buried hills in this area can be divided into three types and six subtypes: the geomorphic residual hill dominated by the Mesozoic structure, the extensional fault block dominated by the early Cenozoic structure, and the later modified buried hills. Among them, the thrust residual hill in the northern Baiyun sag, the tilting fault block in the eastern Baiyun sag and the horst and fault blockformed by normal and strike-slip faults of different orientations in the southwestern Baiyun sag have good granite reservoir development conditions, and is the favorable area to search for traps.
- Northern South China Sea,
- Baiyun Sag,
- buried hill,
- pre-existing structure,
- Detachment fault,
- Magmatism,
- Genesis and types of buried hills,
- petroleum geology

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References(74)

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Genesis and Types of Buried Hills in the Tectonic Setting of the Inheriting Continental Margin in Baiyun Sag, Northern South China Sea

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